./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-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 1b605371288ab675786f884c3e899aa7b22c9968bb31ac2f2bc3b55776b1682d --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 16:13:46,314 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:13:46,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:13:46,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:13:46,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:13:46,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:13:46,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:13:46,386 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:13:46,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:13:46,389 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:13:46,390 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:13:46,391 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:13:46,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:13:46,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:13:46,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:13:46,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:13:46,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:13:46,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:13:46,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:13:46,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:13:46,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:13:46,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:13:46,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:13:46,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:13:46,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:13:46,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:13:46,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:13:46,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:13:46,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:13:46,421 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:13:46,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:13:46,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:13:46,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:13:46,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:13:46,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:13:46,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:13:46,426 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:13:46,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:13:46,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:13:46,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:13:46,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:13:46,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:13:46,449 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:13:46,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:13:46,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:13:46,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:13:46,454 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:13:46,454 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:13:46,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:13:46,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:13:46,454 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:13:46,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:13:46,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:13:46,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:13:46,456 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:13:46,456 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:13:46,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:13:46,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:13:46,456 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:13:46,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:13:46,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:13:46,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:13:46,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:13:46,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:13:46,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:13:46,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:13:46,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:13:46,458 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:13:46,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:13:46,458 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:13:46,458 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:13:46,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:13:46,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:13:46,459 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b605371288ab675786f884c3e899aa7b22c9968bb31ac2f2bc3b55776b1682d [2021-12-21 16:13:46,658 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:13:46,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:13:46,680 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:13:46,681 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:13:46,681 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:13:46,682 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2021-12-21 16:13:46,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e617aaef7/2efa1c4333cf4d9982cf0173b6ce76ae/FLAG882e8fb24 [2021-12-21 16:13:47,360 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:13:47,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2021-12-21 16:13:47,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e617aaef7/2efa1c4333cf4d9982cf0173b6ce76ae/FLAG882e8fb24 [2021-12-21 16:13:47,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e617aaef7/2efa1c4333cf4d9982cf0173b6ce76ae [2021-12-21 16:13:47,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:13:47,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:13:47,788 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:13:47,788 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:13:47,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:13:47,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:13:47" (1/1) ... [2021-12-21 16:13:47,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c0f1a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:47, skipping insertion in model container [2021-12-21 16:13:47,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:13:47" (1/1) ... [2021-12-21 16:13:47,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:13:47,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:13:48,482 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[180577,180590] [2021-12-21 16:13:48,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:13:48,856 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:13:48,969 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i[180577,180590] [2021-12-21 16:13:49,102 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:13:49,136 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:13:49,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:49 WrapperNode [2021-12-21 16:13:49,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:13:49,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:13:49,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:13:49,139 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:13:49,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:49" (1/1) ... [2021-12-21 16:13:49,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:49" (1/1) ... [2021-12-21 16:13:49,269 INFO L137 Inliner]: procedures = 180, calls = 1285, calls flagged for inlining = 87, calls inlined = 41, statements flattened = 1748 [2021-12-21 16:13:49,270 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:13:49,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:13:49,271 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:13:49,271 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:13:49,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:49" (1/1) ... [2021-12-21 16:13:49,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:49" (1/1) ... [2021-12-21 16:13:49,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:49" (1/1) ... [2021-12-21 16:13:49,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:49" (1/1) ... [2021-12-21 16:13:49,338 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:49" (1/1) ... [2021-12-21 16:13:49,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:49" (1/1) ... [2021-12-21 16:13:49,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:49" (1/1) ... [2021-12-21 16:13:49,383 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:13:49,384 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:13:49,384 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:13:49,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:13:49,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:49" (1/1) ... [2021-12-21 16:13:49,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:13:49,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:13:49,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 16:13:49,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 16:13:49,472 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_reset_device [2021-12-21 16:13:49,472 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_reset_device [2021-12-21 16:13:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_resume [2021-12-21 16:13:49,473 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_resume [2021-12-21 16:13:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-12-21 16:13:49,473 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-12-21 16:13:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-21 16:13:49,473 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-21 16:13:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-21 16:13:49,473 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-21 16:13:49,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 16:13:49,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 16:13:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:13:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2021-12-21 16:13:49,474 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2021-12-21 16:13:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2021-12-21 16:13:49,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2021-12-21 16:13:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-21 16:13:49,474 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-21 16:13:49,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:13:49,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:13:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-21 16:13:49,475 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-21 16:13:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2021-12-21 16:13:49,475 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2021-12-21 16:13:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_submit_rx_urb [2021-12-21 16:13:49,475 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_submit_rx_urb [2021-12-21 16:13:49,475 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-21 16:13:49,475 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-21 16:13:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 16:13:49,476 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 16:13:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure __if_usb_submit_rx_urb [2021-12-21 16:13:49,476 INFO L138 BoogieDeclarations]: Found implementation of procedure __if_usb_submit_rx_urb [2021-12-21 16:13:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:13:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-21 16:13:49,476 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-21 16:13:49,476 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:13:49,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:13:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_free [2021-12-21 16:13:49,477 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_free [2021-12-21 16:13:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-21 16:13:49,477 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-21 16:13:49,477 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 16:13:49,477 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 16:13:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:13:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure if_usb_disconnect [2021-12-21 16:13:49,478 INFO L138 BoogieDeclarations]: Found implementation of procedure if_usb_disconnect [2021-12-21 16:13:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure usb_tx_block [2021-12-21 16:13:49,478 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_tx_block [2021-12-21 16:13:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:13:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2021-12-21 16:13:49,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2021-12-21 16:13:49,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 16:13:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:13:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-21 16:13:49,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:13:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-21 16:13:49,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-21 16:13:49,480 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-21 16:13:49,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-21 16:13:49,481 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2021-12-21 16:13:49,481 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2021-12-21 16:13:49,481 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-21 16:13:49,481 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-21 16:13:49,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:13:49,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:13:49,481 INFO L130 BoogieDeclarations]: Found specification of procedure lbs_remove_card [2021-12-21 16:13:49,481 INFO L138 BoogieDeclarations]: Found implementation of procedure lbs_remove_card [2021-12-21 16:13:49,481 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-21 16:13:49,482 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-21 16:13:49,482 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-12-21 16:13:49,482 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-12-21 16:13:49,482 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-21 16:13:49,482 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-21 16:13:49,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:13:49,516 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-12-21 16:13:49,516 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-12-21 16:13:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-21 16:13:49,517 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-21 16:13:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-21 16:13:49,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-21 16:13:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:13:49,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:13:49,517 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2021-12-21 16:13:49,517 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2021-12-21 16:13:49,883 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:13:49,885 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:13:50,120 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 16:13:50,895 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:13:50,908 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:13:50,908 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-21 16:13:50,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:13:50 BoogieIcfgContainer [2021-12-21 16:13:50,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:13:50,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:13:50,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:13:50,915 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:13:50,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:13:47" (1/3) ... [2021-12-21 16:13:50,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52050afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:13:50, skipping insertion in model container [2021-12-21 16:13:50,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:13:49" (2/3) ... [2021-12-21 16:13:50,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52050afa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:13:50, skipping insertion in model container [2021-12-21 16:13:50,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:13:50" (3/3) ... [2021-12-21 16:13:50,918 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wireless--libertas--usb8xxx.ko-entry_point.cil.out.i [2021-12-21 16:13:50,921 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:13:50,921 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:13:50,987 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:13:51,000 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 16:13:51,001 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:13:51,026 INFO L276 IsEmpty]: Start isEmpty. Operand has 523 states, 385 states have (on average 1.361038961038961) internal successors, (524), 399 states have internal predecessors, (524), 101 states have call successors, (101), 36 states have call predecessors, (101), 35 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-21 16:13:51,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-21 16:13:51,036 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:13:51,037 INFO L514 BasicCegarLoop]: 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, 1, 1] [2021-12-21 16:13:51,037 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:13:51,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:13:51,041 INFO L85 PathProgramCache]: Analyzing trace with hash 404224410, now seen corresponding path program 1 times [2021-12-21 16:13:51,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:13:51,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825249683] [2021-12-21 16:13:51,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:13:51,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:13:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:51,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:13:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:51,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:13:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:51,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:13:51,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:13:51,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825249683] [2021-12-21 16:13:51,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825249683] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:13:51,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:13:51,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:13:51,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610340068] [2021-12-21 16:13:51,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:13:51,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:13:51,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:13:51,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:13:51,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:13:51,493 INFO L87 Difference]: Start difference. First operand has 523 states, 385 states have (on average 1.361038961038961) internal successors, (524), 399 states have internal predecessors, (524), 101 states have call successors, (101), 36 states have call predecessors, (101), 35 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-12-21 16:13:52,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:13:52,827 INFO L93 Difference]: Finished difference Result 1646 states and 2326 transitions. [2021-12-21 16:13:52,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:13:52,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 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 31 [2021-12-21 16:13:52,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:13:52,843 INFO L225 Difference]: With dead ends: 1646 [2021-12-21 16:13:52,843 INFO L226 Difference]: Without dead ends: 1112 [2021-12-21 16:13:52,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:13:52,852 INFO L933 BasicCegarLoop]: 754 mSDtfsCounter, 1300 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1365 SdHoareTripleChecker+Valid, 1950 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 16:13:52,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1365 Valid, 1950 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [557 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 16:13:52,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2021-12-21 16:13:52,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 995. [2021-12-21 16:13:52,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 737 states have (on average 1.3351424694708276) internal successors, (984), 753 states have internal predecessors, (984), 190 states have call successors, (190), 68 states have call predecessors, (190), 67 states have return successors, (189), 183 states have call predecessors, (189), 189 states have call successors, (189) [2021-12-21 16:13:52,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1363 transitions. [2021-12-21 16:13:52,956 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1363 transitions. Word has length 31 [2021-12-21 16:13:52,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:13:52,957 INFO L470 AbstractCegarLoop]: Abstraction has 995 states and 1363 transitions. [2021-12-21 16:13:52,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-12-21 16:13:52,957 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1363 transitions. [2021-12-21 16:13:52,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-21 16:13:52,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:13:52,960 INFO L514 BasicCegarLoop]: 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] [2021-12-21 16:13:52,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:13:52,960 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:13:52,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:13:52,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1978920525, now seen corresponding path program 1 times [2021-12-21 16:13:52,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:13:52,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526388936] [2021-12-21 16:13:52,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:13:52,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:13:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:53,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:13:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:53,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:13:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:53,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 16:13:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:53,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 16:13:53,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:13:53,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526388936] [2021-12-21 16:13:53,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526388936] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:13:53,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:13:53,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:13:53,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742560401] [2021-12-21 16:13:53,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:13:53,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:13:53,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:13:53,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:13:53,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:13:53,107 INFO L87 Difference]: Start difference. First operand 995 states and 1363 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) [2021-12-21 16:13:53,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:13:53,921 INFO L93 Difference]: Finished difference Result 1124 states and 1531 transitions. [2021-12-21 16:13:53,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 16:13:53,921 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 [2021-12-21 16:13:53,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:13:53,927 INFO L225 Difference]: With dead ends: 1124 [2021-12-21 16:13:53,927 INFO L226 Difference]: Without dead ends: 1118 [2021-12-21 16:13:53,928 INFO L932 BasicCegarLoop]: 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 [2021-12-21 16:13:53,929 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 983 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1049 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 16:13:53,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1049 Valid, 1288 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-21 16:13:53,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2021-12-21 16:13:53,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 995. [2021-12-21 16:13:53,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 737 states have (on average 1.333785617367707) internal successors, (983), 753 states have internal predecessors, (983), 190 states have call successors, (190), 68 states have call predecessors, (190), 67 states have return successors, (189), 183 states have call predecessors, (189), 189 states have call successors, (189) [2021-12-21 16:13:53,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1362 transitions. [2021-12-21 16:13:53,965 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1362 transitions. Word has length 41 [2021-12-21 16:13:53,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:13:53,965 INFO L470 AbstractCegarLoop]: Abstraction has 995 states and 1362 transitions. [2021-12-21 16:13:53,966 INFO L471 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) [2021-12-21 16:13:53,966 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1362 transitions. [2021-12-21 16:13:53,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-21 16:13:53,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:13:53,968 INFO L514 BasicCegarLoop]: 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] [2021-12-21 16:13:53,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 16:13:53,968 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:13:53,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:13:53,969 INFO L85 PathProgramCache]: Analyzing trace with hash -203913163, now seen corresponding path program 1 times [2021-12-21 16:13:53,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:13:53,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095824470] [2021-12-21 16:13:53,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:13:53,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:13:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:54,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:13:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:54,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:13:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:54,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 16:13:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 16:13:54,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:13:54,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095824470] [2021-12-21 16:13:54,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095824470] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:13:54,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:13:54,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:13:54,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680432657] [2021-12-21 16:13:54,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:13:54,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:13:54,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:13:54,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:13:54,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:13:54,099 INFO L87 Difference]: Start difference. First operand 995 states and 1362 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 16:13:55,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:13:55,658 INFO L93 Difference]: Finished difference Result 3179 states and 4385 transitions. [2021-12-21 16:13:55,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 16:13:55,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2021-12-21 16:13:55,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:13:55,669 INFO L225 Difference]: With dead ends: 3179 [2021-12-21 16:13:55,669 INFO L226 Difference]: Without dead ends: 2191 [2021-12-21 16:13:55,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-21 16:13:55,673 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 1293 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 1170 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 3221 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 1170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 16:13:55,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1353 Valid, 3221 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 1170 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 16:13:55,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2191 states. [2021-12-21 16:13:55,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2191 to 2022. [2021-12-21 16:13:55,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2022 states, 1499 states have (on average 1.3328885923949298) internal successors, (1998), 1533 states have internal predecessors, (1998), 379 states have call successors, (379), 134 states have call predecessors, (379), 143 states have return successors, (405), 374 states have call predecessors, (405), 378 states have call successors, (405) [2021-12-21 16:13:55,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 2782 transitions. [2021-12-21 16:13:55,783 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 2782 transitions. Word has length 41 [2021-12-21 16:13:55,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:13:55,783 INFO L470 AbstractCegarLoop]: Abstraction has 2022 states and 2782 transitions. [2021-12-21 16:13:55,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-21 16:13:55,784 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 2782 transitions. [2021-12-21 16:13:55,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-21 16:13:55,795 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:13:55,795 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:13:55,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 16:13:55,796 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:13:55,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:13:55,797 INFO L85 PathProgramCache]: Analyzing trace with hash 79979308, now seen corresponding path program 1 times [2021-12-21 16:13:55,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:13:55,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900158192] [2021-12-21 16:13:55,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:13:55,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:13:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:55,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:13:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:55,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:13:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:55,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 16:13:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:55,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:13:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:55,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:13:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:56,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:13:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:56,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:13:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:56,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:13:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:56,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 16:13:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-21 16:13:56,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:13:56,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900158192] [2021-12-21 16:13:56,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900158192] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:13:56,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:13:56,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:13:56,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160371876] [2021-12-21 16:13:56,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:13:56,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:13:56,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:13:56,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:13:56,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:13:56,044 INFO L87 Difference]: Start difference. First operand 2022 states and 2782 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-21 16:13:57,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:13:57,016 INFO L93 Difference]: Finished difference Result 4446 states and 6148 transitions. [2021-12-21 16:13:57,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:13:57,017 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 94 [2021-12-21 16:13:57,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:13:57,026 INFO L225 Difference]: With dead ends: 4446 [2021-12-21 16:13:57,026 INFO L226 Difference]: Without dead ends: 2437 [2021-12-21 16:13:57,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:13:57,032 INFO L933 BasicCegarLoop]: 666 mSDtfsCounter, 528 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 16:13:57,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 1800 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 16:13:57,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2021-12-21 16:13:57,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 2255. [2021-12-21 16:13:57,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 1689 states have (on average 1.3510953226761397) internal successors, (2282), 1741 states have internal predecessors, (2282), 404 states have call successors, (404), 148 states have call predecessors, (404), 161 states have return successors, (434), 389 states have call predecessors, (434), 403 states have call successors, (434) [2021-12-21 16:13:57,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3120 transitions. [2021-12-21 16:13:57,103 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3120 transitions. Word has length 94 [2021-12-21 16:13:57,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:13:57,103 INFO L470 AbstractCegarLoop]: Abstraction has 2255 states and 3120 transitions. [2021-12-21 16:13:57,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-21 16:13:57,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3120 transitions. [2021-12-21 16:13:57,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-21 16:13:57,108 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:13:57,108 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:13:57,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 16:13:57,108 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:13:57,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:13:57,109 INFO L85 PathProgramCache]: Analyzing trace with hash 278080431, now seen corresponding path program 1 times [2021-12-21 16:13:57,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:13:57,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686135028] [2021-12-21 16:13:57,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:13:57,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:13:57,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:57,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:13:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:57,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:13:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:57,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 16:13:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:57,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 16:13:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:57,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:13:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:57,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:13:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:57,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:13:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:57,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:13:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:57,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:13:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:57,349 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-21 16:13:57,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:13:57,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686135028] [2021-12-21 16:13:57,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686135028] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:13:57,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:13:57,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:13:57,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664979528] [2021-12-21 16:13:57,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:13:57,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:13:57,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:13:57,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:13:57,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:13:57,352 INFO L87 Difference]: Start difference. First operand 2255 states and 3120 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-21 16:13:58,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:13:58,411 INFO L93 Difference]: Finished difference Result 5212 states and 7184 transitions. [2021-12-21 16:13:58,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 16:13:58,412 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 106 [2021-12-21 16:13:58,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:13:58,423 INFO L225 Difference]: With dead ends: 5212 [2021-12-21 16:13:58,423 INFO L226 Difference]: Without dead ends: 2981 [2021-12-21 16:13:58,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:13:58,431 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 793 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1731 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 16:13:58,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [849 Valid, 1731 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 16:13:58,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2021-12-21 16:13:58,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 2779. [2021-12-21 16:13:58,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2779 states, 2097 states have (on average 1.3471626132570338) internal successors, (2825), 2165 states have internal predecessors, (2825), 458 states have call successors, (458), 210 states have call predecessors, (458), 223 states have return successors, (487), 431 states have call predecessors, (487), 457 states have call successors, (487) [2021-12-21 16:13:58,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2779 states to 2779 states and 3770 transitions. [2021-12-21 16:13:58,519 INFO L78 Accepts]: Start accepts. Automaton has 2779 states and 3770 transitions. Word has length 106 [2021-12-21 16:13:58,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:13:58,520 INFO L470 AbstractCegarLoop]: Abstraction has 2779 states and 3770 transitions. [2021-12-21 16:13:58,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-21 16:13:58,522 INFO L276 IsEmpty]: Start isEmpty. Operand 2779 states and 3770 transitions. [2021-12-21 16:13:58,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-21 16:13:58,533 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:13:58,533 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:13:58,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 16:13:58,535 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:13:58,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:13:58,535 INFO L85 PathProgramCache]: Analyzing trace with hash 954173882, now seen corresponding path program 1 times [2021-12-21 16:13:58,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:13:58,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424513448] [2021-12-21 16:13:58,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:13:58,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:13:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:58,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:13:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:58,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:13:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:58,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 16:13:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:58,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 16:13:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:58,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 16:13:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:58,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:13:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:58,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 16:13:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:58,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:13:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:58,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:13:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:58,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:13:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:58,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:13:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:58,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:13:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:13:58,777 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-21 16:13:58,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:13:58,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424513448] [2021-12-21 16:13:58,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424513448] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:13:58,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:13:58,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:13:58,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896083589] [2021-12-21 16:13:58,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:13:58,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:13:58,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:13:58,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:13:58,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:13:58,780 INFO L87 Difference]: Start difference. First operand 2779 states and 3770 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 16:13:59,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:13:59,972 INFO L93 Difference]: Finished difference Result 6440 states and 8808 transitions. [2021-12-21 16:13:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 16:13:59,973 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 132 [2021-12-21 16:13:59,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:13:59,987 INFO L225 Difference]: With dead ends: 6440 [2021-12-21 16:13:59,987 INFO L226 Difference]: Without dead ends: 3685 [2021-12-21 16:13:59,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-21 16:13:59,995 INFO L933 BasicCegarLoop]: 785 mSDtfsCounter, 820 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 973 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 2277 SdHoareTripleChecker+Invalid, 1439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 973 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:13:59,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 2277 Invalid, 1439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 973 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-21 16:13:59,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3685 states. [2021-12-21 16:14:00,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3685 to 3329. [2021-12-21 16:14:00,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3329 states, 2519 states have (on average 1.349741961095673) internal successors, (3400), 2607 states have internal predecessors, (3400), 538 states have call successors, (538), 258 states have call predecessors, (538), 271 states have return successors, (567), 499 states have call predecessors, (567), 537 states have call successors, (567) [2021-12-21 16:14:00,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3329 states to 3329 states and 4505 transitions. [2021-12-21 16:14:00,118 INFO L78 Accepts]: Start accepts. Automaton has 3329 states and 4505 transitions. Word has length 132 [2021-12-21 16:14:00,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:14:00,119 INFO L470 AbstractCegarLoop]: Abstraction has 3329 states and 4505 transitions. [2021-12-21 16:14:00,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 16:14:00,119 INFO L276 IsEmpty]: Start isEmpty. Operand 3329 states and 4505 transitions. [2021-12-21 16:14:00,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-21 16:14:00,126 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:14:00,126 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:14:00,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 16:14:00,127 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:14:00,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:14:00,127 INFO L85 PathProgramCache]: Analyzing trace with hash -984455087, now seen corresponding path program 1 times [2021-12-21 16:14:00,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:14:00,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937697269] [2021-12-21 16:14:00,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:00,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:14:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:00,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:00,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:00,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:00,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 16:14:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:00,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 16:14:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:00,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 16:14:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:00,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:00,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 16:14:00,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:00,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 16:14:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:00,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:00,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:00,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:00,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:00,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:00,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-21 16:14:00,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:14:00,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937697269] [2021-12-21 16:14:00,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937697269] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:14:00,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:14:00,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 16:14:00,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831891874] [2021-12-21 16:14:00,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:14:00,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 16:14:00,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:14:00,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 16:14:00,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:14:00,486 INFO L87 Difference]: Start difference. First operand 3329 states and 4505 transitions. Second operand has 9 states, 9 states have (on average 12.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-21 16:14:01,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:14:01,912 INFO L93 Difference]: Finished difference Result 6957 states and 9512 transitions. [2021-12-21 16:14:01,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 16:14:01,913 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) Word has length 155 [2021-12-21 16:14:01,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:14:01,926 INFO L225 Difference]: With dead ends: 6957 [2021-12-21 16:14:01,927 INFO L226 Difference]: Without dead ends: 3652 [2021-12-21 16:14:01,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-12-21 16:14:01,935 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 734 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 1125 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 2771 SdHoareTripleChecker+Invalid, 1635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 1125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 16:14:01,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 2771 Invalid, 1635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 1125 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 16:14:01,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3652 states. [2021-12-21 16:14:02,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3652 to 3329. [2021-12-21 16:14:02,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3329 states, 2515 states have (on average 1.347117296222664) internal successors, (3388), 2605 states have internal predecessors, (3388), 538 states have call successors, (538), 258 states have call predecessors, (538), 275 states have return successors, (571), 501 states have call predecessors, (571), 537 states have call successors, (571) [2021-12-21 16:14:02,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3329 states to 3329 states and 4497 transitions. [2021-12-21 16:14:02,025 INFO L78 Accepts]: Start accepts. Automaton has 3329 states and 4497 transitions. Word has length 155 [2021-12-21 16:14:02,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:14:02,027 INFO L470 AbstractCegarLoop]: Abstraction has 3329 states and 4497 transitions. [2021-12-21 16:14:02,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-21 16:14:02,027 INFO L276 IsEmpty]: Start isEmpty. Operand 3329 states and 4497 transitions. [2021-12-21 16:14:02,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-21 16:14:02,033 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:14:02,033 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:14:02,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 16:14:02,033 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:14:02,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:14:02,034 INFO L85 PathProgramCache]: Analyzing trace with hash -273480105, now seen corresponding path program 1 times [2021-12-21 16:14:02,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:14:02,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396752607] [2021-12-21 16:14:02,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:02,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:14:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:02,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:02,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:02,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 16:14:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:02,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 16:14:02,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:02,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 16:14:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:02,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:02,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 16:14:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:02,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 16:14:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:02,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:02,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:02,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:02,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:02,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:02,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:02,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:02,324 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-21 16:14:02,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:14:02,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396752607] [2021-12-21 16:14:02,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396752607] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:14:02,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197222225] [2021-12-21 16:14:02,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:02,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:14:02,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:14:02,367 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 16:14:02,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 16:14:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:02,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 2762 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 16:14:02,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:14:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-21 16:14:03,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 16:14:03,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197222225] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:14:03,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 16:14:03,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2021-12-21 16:14:03,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210171180] [2021-12-21 16:14:03,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:14:03,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:14:03,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:14:03,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:14:03,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-21 16:14:03,102 INFO L87 Difference]: Start difference. First operand 3329 states and 4497 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 16:14:03,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:14:03,365 INFO L93 Difference]: Finished difference Result 8063 states and 10904 transitions. [2021-12-21 16:14:03,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:14:03,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 162 [2021-12-21 16:14:03,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:14:03,383 INFO L225 Difference]: With dead ends: 8063 [2021-12-21 16:14:03,383 INFO L226 Difference]: Without dead ends: 4758 [2021-12-21 16:14:03,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-21 16:14:03,392 INFO L933 BasicCegarLoop]: 1145 mSDtfsCounter, 725 mSDsluCounter, 2553 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 3698 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:14:03,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 3698 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 16:14:03,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4758 states. [2021-12-21 16:14:03,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4758 to 3353. [2021-12-21 16:14:03,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 2531 states have (on average 1.3449229553536153) internal successors, (3404), 2617 states have internal predecessors, (3404), 546 states have call successors, (546), 258 states have call predecessors, (546), 275 states have return successors, (579), 509 states have call predecessors, (579), 545 states have call successors, (579) [2021-12-21 16:14:03,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 4529 transitions. [2021-12-21 16:14:03,510 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 4529 transitions. Word has length 162 [2021-12-21 16:14:03,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:14:03,510 INFO L470 AbstractCegarLoop]: Abstraction has 3353 states and 4529 transitions. [2021-12-21 16:14:03,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-21 16:14:03,510 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 4529 transitions. [2021-12-21 16:14:03,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-12-21 16:14:03,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:14:03,517 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:14:03,538 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 16:14:03,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:14:03,738 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:14:03,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:14:03,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1352328716, now seen corresponding path program 1 times [2021-12-21 16:14:03,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:14:03,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2931309] [2021-12-21 16:14:03,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:03,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:14:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:03,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:03,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:03,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 16:14:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:03,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 16:14:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:03,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 16:14:03,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:03,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:03,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 16:14:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:03,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:03,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:03,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 16:14:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:03,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:03,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 16:14:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:03,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:03,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 16:14:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:03,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 16:14:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:03,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 16:14:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:03,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 16:14:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:03,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-21 16:14:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:03,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:03,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:04,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:04,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:04,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:04,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:04,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:04,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:04,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:04,032 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-12-21 16:14:04,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:14:04,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2931309] [2021-12-21 16:14:04,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2931309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:14:04,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:14:04,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:14:04,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765526749] [2021-12-21 16:14:04,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:14:04,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:14:04,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:14:04,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:14:04,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:14:04,034 INFO L87 Difference]: Start difference. First operand 3353 states and 4529 transitions. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 16:14:04,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:14:04,999 INFO L93 Difference]: Finished difference Result 7005 states and 9528 transitions. [2021-12-21 16:14:05,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:14:05,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 231 [2021-12-21 16:14:05,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:14:05,014 INFO L225 Difference]: With dead ends: 7005 [2021-12-21 16:14:05,015 INFO L226 Difference]: Without dead ends: 3676 [2021-12-21 16:14:05,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:14:05,024 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 410 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 16:14:05,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 2034 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 16:14:05,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2021-12-21 16:14:05,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3357. [2021-12-21 16:14:05,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3357 states, 2535 states have (on average 1.344378698224852) internal successors, (3408), 2621 states have internal predecessors, (3408), 546 states have call successors, (546), 258 states have call predecessors, (546), 275 states have return successors, (579), 509 states have call predecessors, (579), 545 states have call successors, (579) [2021-12-21 16:14:05,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3357 states to 3357 states and 4533 transitions. [2021-12-21 16:14:05,168 INFO L78 Accepts]: Start accepts. Automaton has 3357 states and 4533 transitions. Word has length 231 [2021-12-21 16:14:05,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:14:05,169 INFO L470 AbstractCegarLoop]: Abstraction has 3357 states and 4533 transitions. [2021-12-21 16:14:05,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 3 states have internal predecessors, (144), 2 states have call successors, (22), 6 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-21 16:14:05,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3357 states and 4533 transitions. [2021-12-21 16:14:05,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-12-21 16:14:05,175 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:14:05,175 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:14:05,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 16:14:05,176 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:14:05,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:14:05,176 INFO L85 PathProgramCache]: Analyzing trace with hash 51540470, now seen corresponding path program 1 times [2021-12-21 16:14:05,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:14:05,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143717695] [2021-12-21 16:14:05,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:05,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:14:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 16:14:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 16:14:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 16:14:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 16:14:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 16:14:05,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 16:14:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 16:14:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 16:14:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 16:14:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 16:14:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-21 16:14:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:05,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:05,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:05,489 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-12-21 16:14:05,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:14:05,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143717695] [2021-12-21 16:14:05,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143717695] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:14:05,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607602790] [2021-12-21 16:14:05,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:05,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:14:05,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:14:05,491 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 16:14:05,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 16:14:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:06,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 3318 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 16:14:06,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:14:06,465 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-21 16:14:06,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 16:14:06,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607602790] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:14:06,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 16:14:06,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2021-12-21 16:14:06,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673402423] [2021-12-21 16:14:06,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:14:06,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:14:06,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:14:06,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:14:06,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:14:06,468 INFO L87 Difference]: Start difference. First operand 3357 states and 4533 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 4 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-21 16:14:06,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:14:06,773 INFO L93 Difference]: Finished difference Result 4833 states and 6532 transitions. [2021-12-21 16:14:06,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 16:14:06,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 4 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 231 [2021-12-21 16:14:06,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:14:06,796 INFO L225 Difference]: With dead ends: 4833 [2021-12-21 16:14:06,796 INFO L226 Difference]: Without dead ends: 4824 [2021-12-21 16:14:06,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:14:06,799 INFO L933 BasicCegarLoop]: 1170 mSDtfsCounter, 1052 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 16:14:06,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1052 Valid, 1535 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 16:14:06,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4824 states. [2021-12-21 16:14:06,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4824 to 4061. [2021-12-21 16:14:06,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4061 states, 3060 states have (on average 1.3395424836601306) internal successors, (4099), 3158 states have internal predecessors, (4099), 676 states have call successors, (676), 307 states have call predecessors, (676), 324 states have return successors, (709), 633 states have call predecessors, (709), 675 states have call successors, (709) [2021-12-21 16:14:06,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4061 states to 4061 states and 5484 transitions. [2021-12-21 16:14:06,948 INFO L78 Accepts]: Start accepts. Automaton has 4061 states and 5484 transitions. Word has length 231 [2021-12-21 16:14:06,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:14:06,948 INFO L470 AbstractCegarLoop]: Abstraction has 4061 states and 5484 transitions. [2021-12-21 16:14:06,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 4 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-21 16:14:06,949 INFO L276 IsEmpty]: Start isEmpty. Operand 4061 states and 5484 transitions. [2021-12-21 16:14:06,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-12-21 16:14:06,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:14:06,957 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:14:07,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 16:14:07,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-21 16:14:07,172 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:14:07,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:14:07,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1538441839, now seen corresponding path program 1 times [2021-12-21 16:14:07,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:14:07,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271338106] [2021-12-21 16:14:07,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:07,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:14:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 16:14:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 16:14:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 16:14:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 16:14:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 16:14:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 16:14:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 16:14:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 16:14:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 16:14:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 16:14:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-21 16:14:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-21 16:14:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 24 proven. 19 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-12-21 16:14:07,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:14:07,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271338106] [2021-12-21 16:14:07,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271338106] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:14:07,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621694057] [2021-12-21 16:14:07,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:07,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:14:07,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:14:07,628 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 16:14:07,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 16:14:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:08,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 3405 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 16:14:08,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:14:08,591 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-12-21 16:14:08,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 16:14:08,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621694057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:14:08,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 16:14:08,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2021-12-21 16:14:08,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12359672] [2021-12-21 16:14:08,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:14:08,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 16:14:08,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:14:08,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 16:14:08,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-21 16:14:08,593 INFO L87 Difference]: Start difference. First operand 4061 states and 5484 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-21 16:14:08,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:14:08,723 INFO L93 Difference]: Finished difference Result 8098 states and 10942 transitions. [2021-12-21 16:14:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 16:14:08,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 241 [2021-12-21 16:14:08,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:14:08,741 INFO L225 Difference]: With dead ends: 8098 [2021-12-21 16:14:08,741 INFO L226 Difference]: Without dead ends: 3953 [2021-12-21 16:14:08,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-12-21 16:14:08,776 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 520 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 16:14:08,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [520 Valid, 1555 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 16:14:08,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3953 states. [2021-12-21 16:14:08,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3953 to 3953. [2021-12-21 16:14:08,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3953 states, 2970 states have (on average 1.3282828282828283) internal successors, (3945), 3060 states have internal predecessors, (3945), 664 states have call successors, (664), 301 states have call predecessors, (664), 318 states have return successors, (697), 627 states have call predecessors, (697), 663 states have call successors, (697) [2021-12-21 16:14:08,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3953 states to 3953 states and 5306 transitions. [2021-12-21 16:14:08,897 INFO L78 Accepts]: Start accepts. Automaton has 3953 states and 5306 transitions. Word has length 241 [2021-12-21 16:14:08,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:14:08,898 INFO L470 AbstractCegarLoop]: Abstraction has 3953 states and 5306 transitions. [2021-12-21 16:14:08,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-21 16:14:08,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3953 states and 5306 transitions. [2021-12-21 16:14:08,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-12-21 16:14:08,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:14:08,905 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:14:08,937 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-21 16:14:09,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:14:09,138 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:14:09,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:14:09,138 INFO L85 PathProgramCache]: Analyzing trace with hash 2035606035, now seen corresponding path program 1 times [2021-12-21 16:14:09,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:14:09,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272650363] [2021-12-21 16:14:09,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:09,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:14:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:09,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 16:14:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 16:14:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 16:14:09,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:09,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 16:14:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 16:14:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 16:14:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 16:14:09,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 16:14:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 16:14:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 16:14:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-21 16:14:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-21 16:14:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-12-21 16:14:09,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:14:09,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272650363] [2021-12-21 16:14:09,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272650363] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:14:09,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:14:09,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:14:09,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854987163] [2021-12-21 16:14:09,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:14:09,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:14:09,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:14:09,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:14:09,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:14:09,397 INFO L87 Difference]: Start difference. First operand 3953 states and 5306 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-21 16:14:10,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:14:10,495 INFO L93 Difference]: Finished difference Result 6097 states and 8211 transitions. [2021-12-21 16:14:10,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:14:10,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 241 [2021-12-21 16:14:10,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:14:10,500 INFO L225 Difference]: With dead ends: 6097 [2021-12-21 16:14:10,501 INFO L226 Difference]: Without dead ends: 2167 [2021-12-21 16:14:10,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:14:10,508 INFO L933 BasicCegarLoop]: 641 mSDtfsCounter, 247 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 16:14:10,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 2300 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-21 16:14:10,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2021-12-21 16:14:10,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 1991. [2021-12-21 16:14:10,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1991 states, 1496 states have (on average 1.3241978609625669) internal successors, (1981), 1541 states have internal predecessors, (1981), 333 states have call successors, (333), 153 states have call predecessors, (333), 161 states have return successors, (349), 314 states have call predecessors, (349), 332 states have call successors, (349) [2021-12-21 16:14:10,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1991 states to 1991 states and 2663 transitions. [2021-12-21 16:14:10,569 INFO L78 Accepts]: Start accepts. Automaton has 1991 states and 2663 transitions. Word has length 241 [2021-12-21 16:14:10,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:14:10,570 INFO L470 AbstractCegarLoop]: Abstraction has 1991 states and 2663 transitions. [2021-12-21 16:14:10,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-21 16:14:10,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1991 states and 2663 transitions. [2021-12-21 16:14:10,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2021-12-21 16:14:10,575 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:14:10,575 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:14:10,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 16:14:10,576 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:14:10,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:14:10,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2082821067, now seen corresponding path program 1 times [2021-12-21 16:14:10,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:14:10,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982061279] [2021-12-21 16:14:10,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:10,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:14:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:10,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 16:14:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 16:14:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 16:14:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 16:14:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 16:14:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 16:14:10,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 16:14:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 16:14:10,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 16:14:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 16:14:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-21 16:14:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-12-21 16:14:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:10,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:14:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:14:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 16:14:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:14:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 16:14:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:10,959 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-12-21 16:14:10,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:14:10,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982061279] [2021-12-21 16:14:10,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982061279] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:14:10,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:14:10,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 16:14:10,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833188344] [2021-12-21 16:14:10,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:14:10,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 16:14:10,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:14:10,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 16:14:10,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-21 16:14:10,963 INFO L87 Difference]: Start difference. First operand 1991 states and 2663 transitions. Second operand has 11 states, 11 states have (on average 15.909090909090908) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (32), 8 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-21 16:14:13,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:14:13,207 INFO L93 Difference]: Finished difference Result 5156 states and 6960 transitions. [2021-12-21 16:14:13,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 16:14:13,207 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.909090909090908) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (32), 8 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 299 [2021-12-21 16:14:13,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:14:13,216 INFO L225 Difference]: With dead ends: 5156 [2021-12-21 16:14:13,217 INFO L226 Difference]: Without dead ends: 3262 [2021-12-21 16:14:13,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-12-21 16:14:13,227 INFO L933 BasicCegarLoop]: 1090 mSDtfsCounter, 1623 mSDsluCounter, 3270 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 872 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 4360 SdHoareTripleChecker+Invalid, 3003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 872 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-21 16:14:13,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1669 Valid, 4360 Invalid, 3003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [872 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-21 16:14:13,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3262 states. [2021-12-21 16:14:13,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3262 to 2007. [2021-12-21 16:14:13,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2007 states, 1510 states have (on average 1.323841059602649) internal successors, (1999), 1555 states have internal predecessors, (1999), 335 states have call successors, (335), 153 states have call predecessors, (335), 161 states have return successors, (351), 316 states have call predecessors, (351), 334 states have call successors, (351) [2021-12-21 16:14:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2007 states to 2007 states and 2685 transitions. [2021-12-21 16:14:13,314 INFO L78 Accepts]: Start accepts. Automaton has 2007 states and 2685 transitions. Word has length 299 [2021-12-21 16:14:13,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:14:13,314 INFO L470 AbstractCegarLoop]: Abstraction has 2007 states and 2685 transitions. [2021-12-21 16:14:13,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.909090909090908) internal successors, (175), 5 states have internal predecessors, (175), 2 states have call successors, (32), 8 states have call predecessors, (32), 1 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-21 16:14:13,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2007 states and 2685 transitions. [2021-12-21 16:14:13,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2021-12-21 16:14:13,320 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:14:13,321 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:14:13,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 16:14:13,321 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:14:13,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:14:13,321 INFO L85 PathProgramCache]: Analyzing trace with hash 461066554, now seen corresponding path program 1 times [2021-12-21 16:14:13,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:14:13,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149979253] [2021-12-21 16:14:13,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:13,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:14:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 16:14:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 16:14:13,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 16:14:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 16:14:13,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 16:14:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 16:14:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 16:14:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 16:14:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 16:14:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 16:14:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-21 16:14:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:13,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:13,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:13,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-12-21 16:14:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:14:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:14:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 16:14:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:14:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 16:14:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:13,895 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 35 proven. 14 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-12-21 16:14:13,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:14:13,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149979253] [2021-12-21 16:14:13,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149979253] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:14:13,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39614996] [2021-12-21 16:14:13,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:13,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:14:13,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:14:13,897 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 16:14:13,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 16:14:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:14,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 3671 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-21 16:14:14,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:14:14,882 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-12-21 16:14:14,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 16:14:14,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39614996] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:14:14,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 16:14:14,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 18 [2021-12-21 16:14:14,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381123641] [2021-12-21 16:14:14,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:14:14,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:14:14,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:14:14,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:14:14,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-12-21 16:14:14,884 INFO L87 Difference]: Start difference. First operand 2007 states and 2685 transitions. Second operand has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-21 16:14:15,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:14:15,199 INFO L93 Difference]: Finished difference Result 5435 states and 7380 transitions. [2021-12-21 16:14:15,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:14:15,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 301 [2021-12-21 16:14:15,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:14:15,209 INFO L225 Difference]: With dead ends: 5435 [2021-12-21 16:14:15,209 INFO L226 Difference]: Without dead ends: 3525 [2021-12-21 16:14:15,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2021-12-21 16:14:15,215 INFO L933 BasicCegarLoop]: 1327 mSDtfsCounter, 1119 mSDsluCounter, 3191 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 4518 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:14:15,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1120 Valid, 4518 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 16:14:15,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2021-12-21 16:14:15,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 2007. [2021-12-21 16:14:15,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2007 states, 1510 states have (on average 1.323841059602649) internal successors, (1999), 1555 states have internal predecessors, (1999), 335 states have call successors, (335), 153 states have call predecessors, (335), 161 states have return successors, (351), 316 states have call predecessors, (351), 334 states have call successors, (351) [2021-12-21 16:14:15,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2007 states to 2007 states and 2685 transitions. [2021-12-21 16:14:15,335 INFO L78 Accepts]: Start accepts. Automaton has 2007 states and 2685 transitions. Word has length 301 [2021-12-21 16:14:15,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:14:15,336 INFO L470 AbstractCegarLoop]: Abstraction has 2007 states and 2685 transitions. [2021-12-21 16:14:15,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.4) internal successors, (187), 5 states have internal predecessors, (187), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) [2021-12-21 16:14:15,336 INFO L276 IsEmpty]: Start isEmpty. Operand 2007 states and 2685 transitions. [2021-12-21 16:14:15,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-12-21 16:14:15,342 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:14:15,342 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:14:15,367 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-21 16:14:15,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:14:15,560 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:14:15,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:14:15,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1773182242, now seen corresponding path program 1 times [2021-12-21 16:14:15,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:14:15,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688165160] [2021-12-21 16:14:15,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:15,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:14:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 16:14:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 16:14:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 16:14:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 16:14:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 16:14:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 16:14:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 16:14:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 16:14:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 16:14:15,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 16:14:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-21 16:14:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-21 16:14:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-21 16:14:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:15,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:16,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-21 16:14:16,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:16,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:16,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:16,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:16,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:16,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:14:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:16,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:14:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:16,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 16:14:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:16,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:14:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:16,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 16:14:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:16,065 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 35 proven. 14 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-12-21 16:14:16,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:14:16,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688165160] [2021-12-21 16:14:16,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688165160] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:14:16,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019470056] [2021-12-21 16:14:16,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:16,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:14:16,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:14:16,080 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) [2021-12-21 16:14:16,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 16:14:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:16,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 3705 conjuncts, 350 conjunts are in the unsatisfiable core [2021-12-21 16:14:16,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:14:17,810 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-21 16:14:17,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 16:14:17,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019470056] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:14:17,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 16:14:17,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [15] total 32 [2021-12-21 16:14:17,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624824245] [2021-12-21 16:14:17,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:14:17,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-21 16:14:17,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:14:17,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-21 16:14:17,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=879, Unknown=0, NotChecked=0, Total=992 [2021-12-21 16:14:17,812 INFO L87 Difference]: Start difference. First operand 2007 states and 2685 transitions. Second operand has 19 states, 19 states have (on average 10.105263157894736) internal successors, (192), 14 states have internal predecessors, (192), 5 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (34), 7 states have call predecessors, (34), 5 states have call successors, (34) [2021-12-21 16:14:20,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:14:20,644 INFO L93 Difference]: Finished difference Result 6897 states and 9442 transitions. [2021-12-21 16:14:20,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-21 16:14:20,647 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.105263157894736) internal successors, (192), 14 states have internal predecessors, (192), 5 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (34), 7 states have call predecessors, (34), 5 states have call successors, (34) Word has length 311 [2021-12-21 16:14:20,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:14:20,657 INFO L225 Difference]: With dead ends: 6897 [2021-12-21 16:14:20,657 INFO L226 Difference]: Without dead ends: 4987 [2021-12-21 16:14:20,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=1381, Unknown=0, NotChecked=0, Total=1560 [2021-12-21 16:14:20,664 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 3304 mSDsluCounter, 7861 mSDsCounter, 0 mSdLazyCounter, 4434 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3364 SdHoareTripleChecker+Valid, 8663 SdHoareTripleChecker+Invalid, 4949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 4434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 16:14:20,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3364 Valid, 8663 Invalid, 4949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 4434 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 16:14:20,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4987 states. [2021-12-21 16:14:20,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4987 to 3983. [2021-12-21 16:14:20,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3983 states, 2996 states have (on average 1.3227636849132176) internal successors, (3963), 3087 states have internal predecessors, (3963), 664 states have call successors, (664), 297 states have call predecessors, (664), 322 states have return successors, (718), 634 states have call predecessors, (718), 663 states have call successors, (718) [2021-12-21 16:14:20,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3983 states to 3983 states and 5345 transitions. [2021-12-21 16:14:20,901 INFO L78 Accepts]: Start accepts. Automaton has 3983 states and 5345 transitions. Word has length 311 [2021-12-21 16:14:20,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:14:20,901 INFO L470 AbstractCegarLoop]: Abstraction has 3983 states and 5345 transitions. [2021-12-21 16:14:20,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.105263157894736) internal successors, (192), 14 states have internal predecessors, (192), 5 states have call successors, (35), 3 states have call predecessors, (35), 7 states have return successors, (34), 7 states have call predecessors, (34), 5 states have call successors, (34) [2021-12-21 16:14:20,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3983 states and 5345 transitions. [2021-12-21 16:14:20,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2021-12-21 16:14:20,913 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:14:20,913 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:14:20,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-21 16:14:21,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-21 16:14:21,128 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:14:21,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:14:21,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1153675596, now seen corresponding path program 1 times [2021-12-21 16:14:21,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:14:21,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442855968] [2021-12-21 16:14:21,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:21,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:14:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 16:14:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 16:14:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 16:14:21,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:21,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 16:14:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 16:14:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:21,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 16:14:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-21 16:14:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 16:14:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 16:14:21,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-21 16:14:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-21 16:14:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 16:14:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-21 16:14:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:21,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-21 16:14:21,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:21,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:14:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:14:21,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 16:14:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:14:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 16:14:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:21,609 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 37 proven. 11 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-12-21 16:14:21,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:14:21,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442855968] [2021-12-21 16:14:21,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442855968] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:14:21,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014099424] [2021-12-21 16:14:21,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:21,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:14:21,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:14:21,610 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) [2021-12-21 16:14:21,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 16:14:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:22,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 3757 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-21 16:14:22,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:14:22,724 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-21 16:14:22,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 16:14:22,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014099424] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:14:22,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 16:14:22,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2021-12-21 16:14:22,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052188123] [2021-12-21 16:14:22,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:14:22,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 16:14:22,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:14:22,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 16:14:22,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-21 16:14:22,728 INFO L87 Difference]: Start difference. First operand 3983 states and 5345 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-21 16:14:22,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:14:22,872 INFO L93 Difference]: Finished difference Result 7928 states and 10656 transitions. [2021-12-21 16:14:22,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 16:14:22,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 323 [2021-12-21 16:14:22,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:14:22,925 INFO L225 Difference]: With dead ends: 7928 [2021-12-21 16:14:22,926 INFO L226 Difference]: Without dead ends: 4090 [2021-12-21 16:14:22,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-21 16:14:22,935 INFO L933 BasicCegarLoop]: 772 mSDtfsCounter, 231 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1265 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 [2021-12-21 16:14:22,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 1265 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 16:14:22,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4090 states. [2021-12-21 16:14:23,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4090 to 3983. [2021-12-21 16:14:23,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3983 states, 2996 states have (on average 1.3207610146862483) internal successors, (3957), 3081 states have internal predecessors, (3957), 664 states have call successors, (664), 297 states have call predecessors, (664), 322 states have return successors, (718), 634 states have call predecessors, (718), 663 states have call successors, (718) [2021-12-21 16:14:23,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3983 states to 3983 states and 5339 transitions. [2021-12-21 16:14:23,116 INFO L78 Accepts]: Start accepts. Automaton has 3983 states and 5339 transitions. Word has length 323 [2021-12-21 16:14:23,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:14:23,117 INFO L470 AbstractCegarLoop]: Abstraction has 3983 states and 5339 transitions. [2021-12-21 16:14:23,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 states have internal predecessors, (194), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2021-12-21 16:14:23,118 INFO L276 IsEmpty]: Start isEmpty. Operand 3983 states and 5339 transitions. [2021-12-21 16:14:23,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-12-21 16:14:23,127 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:14:23,128 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:14:23,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-21 16:14:23,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-21 16:14:23,342 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:14:23,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:14:23,342 INFO L85 PathProgramCache]: Analyzing trace with hash -287103134, now seen corresponding path program 1 times [2021-12-21 16:14:23,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:14:23,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361024601] [2021-12-21 16:14:23,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:23,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:14:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 16:14:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 16:14:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 16:14:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 16:14:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 16:14:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 16:14:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 16:14:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 16:14:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 16:14:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 16:14:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-21 16:14:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-21 16:14:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-21 16:14:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-21 16:14:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:23,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-21 16:14:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:14:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:14:23,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 16:14:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:14:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 16:14:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 37 proven. 11 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-21 16:14:23,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:14:23,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361024601] [2021-12-21 16:14:23,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361024601] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:14:23,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134874506] [2021-12-21 16:14:23,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:23,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:14:23,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:14:24,000 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) [2021-12-21 16:14:24,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-21 16:14:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:24,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 3825 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-21 16:14:24,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:14:25,213 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-12-21 16:14:25,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 16:14:25,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134874506] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:14:25,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 16:14:25,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 18 [2021-12-21 16:14:25,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299561293] [2021-12-21 16:14:25,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:14:25,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:14:25,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:14:25,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:14:25,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-12-21 16:14:25,216 INFO L87 Difference]: Start difference. First operand 3983 states and 5339 transitions. Second operand has 7 states, 7 states have (on average 27.857142857142858) internal successors, (195), 6 states have internal predecessors, (195), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-12-21 16:14:25,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:14:25,599 INFO L93 Difference]: Finished difference Result 9217 states and 12606 transitions. [2021-12-21 16:14:25,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:14:25,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 27.857142857142858) internal successors, (195), 6 states have internal predecessors, (195), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 325 [2021-12-21 16:14:25,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:14:25,614 INFO L225 Difference]: With dead ends: 9217 [2021-12-21 16:14:25,615 INFO L226 Difference]: Without dead ends: 5379 [2021-12-21 16:14:25,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 390 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2021-12-21 16:14:25,622 INFO L933 BasicCegarLoop]: 1022 mSDtfsCounter, 554 mSDsluCounter, 4381 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 5403 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:14:25,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 5403 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 16:14:25,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5379 states. [2021-12-21 16:14:25,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5379 to 4007. [2021-12-21 16:14:25,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4007 states, 3017 states have (on average 1.31852833941001) internal successors, (3978), 3099 states have internal predecessors, (3978), 664 states have call successors, (664), 297 states have call predecessors, (664), 325 states have return successors, (730), 640 states have call predecessors, (730), 663 states have call successors, (730) [2021-12-21 16:14:25,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4007 states to 4007 states and 5372 transitions. [2021-12-21 16:14:25,858 INFO L78 Accepts]: Start accepts. Automaton has 4007 states and 5372 transitions. Word has length 325 [2021-12-21 16:14:25,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:14:25,858 INFO L470 AbstractCegarLoop]: Abstraction has 4007 states and 5372 transitions. [2021-12-21 16:14:25,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.857142857142858) internal successors, (195), 6 states have internal predecessors, (195), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-12-21 16:14:25,859 INFO L276 IsEmpty]: Start isEmpty. Operand 4007 states and 5372 transitions. [2021-12-21 16:14:25,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-12-21 16:14:25,868 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:14:25,868 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:14:25,893 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-21 16:14:26,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:14:26,084 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:14:26,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:14:26,084 INFO L85 PathProgramCache]: Analyzing trace with hash -631798227, now seen corresponding path program 2 times [2021-12-21 16:14:26,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:14:26,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418202345] [2021-12-21 16:14:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:26,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:14:26,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 16:14:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 16:14:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 16:14:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 16:14:26,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 16:14:26,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 16:14:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 16:14:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 16:14:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 16:14:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 16:14:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-21 16:14:26,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 16:14:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-21 16:14:26,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-21 16:14:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-21 16:14:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:26,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:14:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:14:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 16:14:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:14:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 16:14:26,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:26,531 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 37 proven. 11 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-12-21 16:14:26,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:14:26,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418202345] [2021-12-21 16:14:26,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418202345] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:14:26,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366912632] [2021-12-21 16:14:26,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 16:14:26,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:14:26,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:14:26,548 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) [2021-12-21 16:14:26,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-21 16:14:27,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-21 16:14:27,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 16:14:27,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 2106 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-21 16:14:27,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:14:27,812 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-12-21 16:14:27,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 16:14:27,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366912632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:14:27,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 16:14:27,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 26 [2021-12-21 16:14:27,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901474203] [2021-12-21 16:14:27,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:14:27,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 16:14:27,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:14:27,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 16:14:27,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2021-12-21 16:14:27,814 INFO L87 Difference]: Start difference. First operand 4007 states and 5372 transitions. Second operand has 14 states, 13 states have (on average 15.307692307692308) internal successors, (199), 11 states have internal predecessors, (199), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (35), 5 states have call predecessors, (35), 3 states have call successors, (35) [2021-12-21 16:14:28,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:14:28,216 INFO L93 Difference]: Finished difference Result 7955 states and 10708 transitions. [2021-12-21 16:14:28,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 16:14:28,217 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 15.307692307692308) internal successors, (199), 11 states have internal predecessors, (199), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (35), 5 states have call predecessors, (35), 3 states have call successors, (35) Word has length 331 [2021-12-21 16:14:28,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:14:28,228 INFO L225 Difference]: With dead ends: 7955 [2021-12-21 16:14:28,228 INFO L226 Difference]: Without dead ends: 4093 [2021-12-21 16:14:28,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=901, Unknown=0, NotChecked=0, Total=992 [2021-12-21 16:14:28,236 INFO L933 BasicCegarLoop]: 717 mSDtfsCounter, 51 mSDsluCounter, 7813 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 8530 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:14:28,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 8530 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 16:14:28,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4093 states. [2021-12-21 16:14:28,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4093 to 4013. [2021-12-21 16:14:28,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4013 states, 3023 states have (on average 1.3159113463446908) internal successors, (3978), 3103 states have internal predecessors, (3978), 664 states have call successors, (664), 297 states have call predecessors, (664), 325 states have return successors, (730), 642 states have call predecessors, (730), 663 states have call successors, (730) [2021-12-21 16:14:28,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4013 states to 4013 states and 5372 transitions. [2021-12-21 16:14:28,437 INFO L78 Accepts]: Start accepts. Automaton has 4013 states and 5372 transitions. Word has length 331 [2021-12-21 16:14:28,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:14:28,437 INFO L470 AbstractCegarLoop]: Abstraction has 4013 states and 5372 transitions. [2021-12-21 16:14:28,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 15.307692307692308) internal successors, (199), 11 states have internal predecessors, (199), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (35), 5 states have call predecessors, (35), 3 states have call successors, (35) [2021-12-21 16:14:28,438 INFO L276 IsEmpty]: Start isEmpty. Operand 4013 states and 5372 transitions. [2021-12-21 16:14:28,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-12-21 16:14:28,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:14:28,449 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:14:28,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-21 16:14:28,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-21 16:14:28,664 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:14:28,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:14:28,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1126314739, now seen corresponding path program 1 times [2021-12-21 16:14:28,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:14:28,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701746306] [2021-12-21 16:14:28,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:28,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:14:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:28,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:28,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:28,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 16:14:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:28,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 16:14:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:28,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 16:14:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:28,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:28,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:28,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 16:14:28,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:28,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 16:14:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:28,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:28,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 16:14:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:28,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:28,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 16:14:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:28,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:28,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 16:14:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:28,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:28,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 16:14:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:28,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 16:14:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:28,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-21 16:14:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:28,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-21 16:14:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:28,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-21 16:14:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:29,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-21 16:14:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:29,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:29,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:29,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:29,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:29,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:29,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:29,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:29,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:29,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:14:29,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:29,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 16:14:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:29,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 16:14:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:29,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-21 16:14:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:29,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:29,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:29,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:29,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:29,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:14:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:29,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:14:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:29,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 16:14:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:29,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:14:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:29,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 16:14:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:29,222 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 37 proven. 11 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-12-21 16:14:29,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:14:29,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701746306] [2021-12-21 16:14:29,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701746306] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:14:29,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517800088] [2021-12-21 16:14:29,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:29,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:14:29,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:14:29,224 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) [2021-12-21 16:14:29,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-21 16:14:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:30,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 4048 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-21 16:14:30,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:14:30,523 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-21 16:14:30,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 16:14:30,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517800088] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:14:30,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 16:14:30,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 15 [2021-12-21 16:14:30,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729960593] [2021-12-21 16:14:30,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:14:30,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 16:14:30,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:14:30,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 16:14:30,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-12-21 16:14:30,526 INFO L87 Difference]: Start difference. First operand 4013 states and 5372 transitions. Second operand has 8 states, 8 states have (on average 26.5) internal successors, (212), 6 states have internal predecessors, (212), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (41), 4 states have call predecessors, (41), 2 states have call successors, (41) [2021-12-21 16:14:30,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:14:30,745 INFO L93 Difference]: Finished difference Result 8349 states and 11253 transitions. [2021-12-21 16:14:30,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 16:14:30,746 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 6 states have internal predecessors, (212), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (41), 4 states have call predecessors, (41), 2 states have call successors, (41) Word has length 344 [2021-12-21 16:14:30,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:14:30,755 INFO L225 Difference]: With dead ends: 8349 [2021-12-21 16:14:30,756 INFO L226 Difference]: Without dead ends: 4481 [2021-12-21 16:14:30,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 418 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-12-21 16:14:30,763 INFO L933 BasicCegarLoop]: 850 mSDtfsCounter, 314 mSDsluCounter, 4665 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 5515 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 16:14:30,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 5515 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 16:14:30,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4481 states. [2021-12-21 16:14:31,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4481 to 4043. [2021-12-21 16:14:31,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4043 states, 3047 states have (on average 1.313423039054808) internal successors, (4002), 3121 states have internal predecessors, (4002), 664 states have call successors, (664), 297 states have call predecessors, (664), 331 states have return successors, (742), 654 states have call predecessors, (742), 663 states have call successors, (742) [2021-12-21 16:14:31,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4043 states to 4043 states and 5408 transitions. [2021-12-21 16:14:31,035 INFO L78 Accepts]: Start accepts. Automaton has 4043 states and 5408 transitions. Word has length 344 [2021-12-21 16:14:31,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:14:31,036 INFO L470 AbstractCegarLoop]: Abstraction has 4043 states and 5408 transitions. [2021-12-21 16:14:31,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.5) internal successors, (212), 6 states have internal predecessors, (212), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (41), 4 states have call predecessors, (41), 2 states have call successors, (41) [2021-12-21 16:14:31,036 INFO L276 IsEmpty]: Start isEmpty. Operand 4043 states and 5408 transitions. [2021-12-21 16:14:31,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2021-12-21 16:14:31,043 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:14:31,043 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:14:31,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-21 16:14:31,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:14:31,260 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:14:31,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:14:31,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1157911828, now seen corresponding path program 2 times [2021-12-21 16:14:31,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:14:31,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789198416] [2021-12-21 16:14:31,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:31,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:14:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 16:14:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 16:14:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 16:14:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 16:14:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 16:14:31,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 16:14:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 16:14:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 16:14:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-21 16:14:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-21 16:14:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-21 16:14:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-21 16:14:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-21 16:14:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-12-21 16:14:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:31,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:32,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:32,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:32,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:32,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:32,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:14:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:32,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 16:14:32,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:32,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 16:14:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:32,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-21 16:14:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:32,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:32,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:32,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:32,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:32,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:32,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:14:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:32,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:14:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:32,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 16:14:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:32,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:14:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:32,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 16:14:32,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:32,085 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2021-12-21 16:14:32,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:14:32,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789198416] [2021-12-21 16:14:32,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789198416] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:14:32,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:14:32,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 16:14:32,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146896341] [2021-12-21 16:14:32,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:14:32,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 16:14:32,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:14:32,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 16:14:32,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-12-21 16:14:32,087 INFO L87 Difference]: Start difference. First operand 4043 states and 5408 transitions. Second operand has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 4 states have internal predecessors, (185), 2 states have call successors, (39), 9 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-12-21 16:14:34,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:14:34,184 INFO L93 Difference]: Finished difference Result 8343 states and 11221 transitions. [2021-12-21 16:14:34,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 16:14:34,184 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 4 states have internal predecessors, (185), 2 states have call successors, (39), 9 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 362 [2021-12-21 16:14:34,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:14:34,194 INFO L225 Difference]: With dead ends: 8343 [2021-12-21 16:14:34,195 INFO L226 Difference]: Without dead ends: 4326 [2021-12-21 16:14:34,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-21 16:14:34,201 INFO L933 BasicCegarLoop]: 636 mSDtfsCounter, 740 mSDsluCounter, 2341 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-21 16:14:34,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [761 Valid, 2977 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 1409 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-21 16:14:34,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2021-12-21 16:14:34,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 4044. [2021-12-21 16:14:34,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4044 states, 3048 states have (on average 1.3133202099737533) internal successors, (4003), 3122 states have internal predecessors, (4003), 664 states have call successors, (664), 297 states have call predecessors, (664), 331 states have return successors, (742), 654 states have call predecessors, (742), 663 states have call successors, (742) [2021-12-21 16:14:34,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4044 states to 4044 states and 5409 transitions. [2021-12-21 16:14:34,414 INFO L78 Accepts]: Start accepts. Automaton has 4044 states and 5409 transitions. Word has length 362 [2021-12-21 16:14:34,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:14:34,415 INFO L470 AbstractCegarLoop]: Abstraction has 4044 states and 5409 transitions. [2021-12-21 16:14:34,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 16.818181818181817) internal successors, (185), 4 states have internal predecessors, (185), 2 states have call successors, (39), 9 states have call predecessors, (39), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-12-21 16:14:34,415 INFO L276 IsEmpty]: Start isEmpty. Operand 4044 states and 5409 transitions. [2021-12-21 16:14:34,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2021-12-21 16:14:34,421 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:14:34,422 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:14:34,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-21 16:14:34,422 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:14:34,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:14:34,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1691241993, now seen corresponding path program 1 times [2021-12-21 16:14:34,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:14:34,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158623428] [2021-12-21 16:14:34,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:34,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:14:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:14:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 16:14:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 16:14:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 16:14:34,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 16:14:34,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:34,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 16:14:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 16:14:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-21 16:14:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-21 16:14:34,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-21 16:14:34,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-21 16:14:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-21 16:14:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-21 16:14:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-21 16:14:34,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:14:34,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 16:14:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 16:14:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2021-12-21 16:14:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:34,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:34,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:14:34,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:14:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 16:14:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:14:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 16:14:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:34,996 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-12-21 16:14:34,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:14:34,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158623428] [2021-12-21 16:14:34,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158623428] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:14:34,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955874698] [2021-12-21 16:14:34,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:34,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:14:34,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:14:34,998 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 16:14:34,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-21 16:14:36,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:36,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 4121 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-21 16:14:36,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:14:36,801 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-12-21 16:14:36,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 16:14:36,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955874698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:14:36,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 16:14:36,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 15 [2021-12-21 16:14:36,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066388546] [2021-12-21 16:14:36,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:14:36,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 16:14:36,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:14:36,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 16:14:36,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-12-21 16:14:36,804 INFO L87 Difference]: Start difference. First operand 4044 states and 5409 transitions. Second operand has 8 states, 8 states have (on average 26.625) internal successors, (213), 6 states have internal predecessors, (213), 2 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (41), 4 states have call predecessors, (41), 2 states have call successors, (41) [2021-12-21 16:14:37,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:14:37,088 INFO L93 Difference]: Finished difference Result 8392 states and 11302 transitions. [2021-12-21 16:14:37,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 16:14:37,089 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 26.625) internal successors, (213), 6 states have internal predecessors, (213), 2 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (41), 4 states have call predecessors, (41), 2 states have call successors, (41) Word has length 360 [2021-12-21 16:14:37,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:14:37,102 INFO L225 Difference]: With dead ends: 8392 [2021-12-21 16:14:37,102 INFO L226 Difference]: Without dead ends: 4494 [2021-12-21 16:14:37,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 438 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-12-21 16:14:37,112 INFO L933 BasicCegarLoop]: 854 mSDtfsCounter, 310 mSDsluCounter, 4681 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 5535 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 16:14:37,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 5535 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 16:14:37,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4494 states. [2021-12-21 16:14:37,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4494 to 4056. [2021-12-21 16:14:37,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4056 states, 3060 states have (on average 1.3120915032679739) internal successors, (4015), 3128 states have internal predecessors, (4015), 664 states have call successors, (664), 297 states have call predecessors, (664), 331 states have return successors, (742), 660 states have call predecessors, (742), 663 states have call successors, (742) [2021-12-21 16:14:37,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4056 states to 4056 states and 5421 transitions. [2021-12-21 16:14:37,382 INFO L78 Accepts]: Start accepts. Automaton has 4056 states and 5421 transitions. Word has length 360 [2021-12-21 16:14:37,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:14:37,382 INFO L470 AbstractCegarLoop]: Abstraction has 4056 states and 5421 transitions. [2021-12-21 16:14:37,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 26.625) internal successors, (213), 6 states have internal predecessors, (213), 2 states have call successors, (41), 2 states have call predecessors, (41), 4 states have return successors, (41), 4 states have call predecessors, (41), 2 states have call successors, (41) [2021-12-21 16:14:37,383 INFO L276 IsEmpty]: Start isEmpty. Operand 4056 states and 5421 transitions. [2021-12-21 16:14:37,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-12-21 16:14:37,388 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:14:37,389 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:14:37,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-21 16:14:37,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-21 16:14:37,613 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:14:37,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:14:37,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1351184652, now seen corresponding path program 2 times [2021-12-21 16:14:37,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:14:37,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500309129] [2021-12-21 16:14:37,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:14:37,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:14:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:37,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:37,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:14:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 16:14:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 16:14:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 16:14:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 16:14:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 16:14:38,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 16:14:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-21 16:14:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:14:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-21 16:14:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-21 16:14:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-21 16:14:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-21 16:14:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-21 16:14:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-21 16:14:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:38,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:38,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 16:14:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 16:14:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-21 16:14:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-21 16:14:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:14:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-21 16:14:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:14:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:14:38,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 16:14:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-21 16:14:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-21 16:14:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 16:14:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 16:14:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:14:38,285 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2021-12-21 16:14:38,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:14:38,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500309129] [2021-12-21 16:14:38,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500309129] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:14:38,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315719095] [2021-12-21 16:14:38,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 16:14:38,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:14:38,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:14:38,287 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 16:14:38,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process