./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.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 83293f5c81ac30df7449dd9c03263a4edbba62be916a9a4fda92d2518792b8d4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 10:58:52,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 10:58:52,318 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 10:58:52,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 10:58:52,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 10:58:52,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 10:58:52,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 10:58:52,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 10:58:52,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 10:58:52,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 10:58:52,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 10:58:52,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 10:58:52,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 10:58:52,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 10:58:52,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 10:58:52,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 10:58:52,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 10:58:52,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 10:58:52,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 10:58:52,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 10:58:52,391 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 10:58:52,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 10:58:52,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 10:58:52,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 10:58:52,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 10:58:52,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 10:58:52,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 10:58:52,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 10:58:52,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 10:58:52,404 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 10:58:52,405 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 10:58:52,405 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 10:58:52,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 10:58:52,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 10:58:52,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 10:58:52,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 10:58:52,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 10:58:52,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 10:58:52,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 10:58:52,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 10:58:52,411 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 10:58:52,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 10:58:52,419 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 10:58:52,451 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 10:58:52,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 10:58:52,452 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 10:58:52,452 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 10:58:52,453 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 10:58:52,453 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 10:58:52,454 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 10:58:52,454 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 10:58:52,454 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 10:58:52,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 10:58:52,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 10:58:52,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 10:58:52,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 10:58:52,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 10:58:52,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 10:58:52,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 10:58:52,463 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 10:58:52,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 10:58:52,464 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 10:58:52,464 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 10:58:52,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 10:58:52,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 10:58:52,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 10:58:52,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 10:58:52,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 10:58:52,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 10:58:52,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 10:58:52,465 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 10:58:52,466 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 10:58:52,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 10:58:52,466 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83293f5c81ac30df7449dd9c03263a4edbba62be916a9a4fda92d2518792b8d4 [2022-07-21 10:58:52,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 10:58:52,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 10:58:52,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 10:58:52,805 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 10:58:52,807 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 10:58:52,808 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2022-07-21 10:58:52,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee19e0153/7bb20631efc5451ab9d4bcdd1aa75373/FLAG45e243f08 [2022-07-21 10:58:53,512 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 10:58:53,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2022-07-21 10:58:53,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee19e0153/7bb20631efc5451ab9d4bcdd1aa75373/FLAG45e243f08 [2022-07-21 10:58:53,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee19e0153/7bb20631efc5451ab9d4bcdd1aa75373 [2022-07-21 10:58:53,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 10:58:53,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 10:58:53,634 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 10:58:53,634 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 10:58:53,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 10:58:53,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:58:53" (1/1) ... [2022-07-21 10:58:53,638 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c7dc891 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:53, skipping insertion in model container [2022-07-21 10:58:53,638 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:58:53" (1/1) ... [2022-07-21 10:58:53,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 10:58:53,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 10:58:54,403 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i[163669,163682] [2022-07-21 10:58:54,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 10:58:54,791 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 10:58:54,930 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i[163669,163682] [2022-07-21 10:58:55,045 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 10:58:55,116 INFO L208 MainTranslator]: Completed translation [2022-07-21 10:58:55,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:55 WrapperNode [2022-07-21 10:58:55,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 10:58:55,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 10:58:55,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 10:58:55,119 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 10:58:55,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:55" (1/1) ... [2022-07-21 10:58:55,191 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:55" (1/1) ... [2022-07-21 10:58:55,339 INFO L137 Inliner]: procedures = 175, calls = 797, calls flagged for inlining = 84, calls inlined = 84, statements flattened = 2260 [2022-07-21 10:58:55,340 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 10:58:55,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 10:58:55,341 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 10:58:55,341 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 10:58:55,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:55" (1/1) ... [2022-07-21 10:58:55,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:55" (1/1) ... [2022-07-21 10:58:55,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:55" (1/1) ... [2022-07-21 10:58:55,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:55" (1/1) ... [2022-07-21 10:58:55,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:55" (1/1) ... [2022-07-21 10:58:55,487 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:55" (1/1) ... [2022-07-21 10:58:55,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:55" (1/1) ... [2022-07-21 10:58:55,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 10:58:55,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 10:58:55,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 10:58:55,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 10:58:55,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:55" (1/1) ... [2022-07-21 10:58:55,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 10:58:55,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 10:58:55,580 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 10:58:55,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 10:58:55,619 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-07-21 10:58:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-07-21 10:58:55,620 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-07-21 10:58:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-07-21 10:58:55,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_2 [2022-07-21 10:58:55,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_2 [2022-07-21 10:58:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_15 [2022-07-21 10:58:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_15 [2022-07-21 10:58:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-21 10:58:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2022-07-21 10:58:55,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2022-07-21 10:58:55,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 10:58:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 10:58:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-07-21 10:58:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-07-21 10:58:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 10:58:55,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 10:58:55,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 10:58:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-07-21 10:58:55,623 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-07-21 10:58:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_present [2022-07-21 10:58:55,623 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_present [2022-07-21 10:58:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-07-21 10:58:55,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-07-21 10:58:55,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 10:58:55,624 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 10:58:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-21 10:58:55,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-21 10:58:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 10:58:55,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 10:58:55,624 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-07-21 10:58:55,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-07-21 10:58:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_read_bulk_callback [2022-07-21 10:58:55,625 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_read_bulk_callback [2022-07-21 10:58:55,625 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2022-07-21 10:58:55,625 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2022-07-21 10:58:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2022-07-21 10:58:55,626 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2022-07-21 10:58:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 10:58:55,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 10:58:55,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 10:58:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 10:58:55,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 10:58:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 10:58:55,627 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 10:58:55,627 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 10:58:55,627 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 10:58:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-07-21 10:58:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-07-21 10:58:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 10:58:55,628 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-07-21 10:58:55,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-07-21 10:58:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure unlink_all_urbs [2022-07-21 10:58:55,629 INFO L138 BoogieDeclarations]: Found implementation of procedure unlink_all_urbs [2022-07-21 10:58:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 10:58:55,629 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-21 10:58:55,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-21 10:58:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 10:58:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 10:58:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 10:58:55,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 10:58:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-07-21 10:58:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-07-21 10:58:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-07-21 10:58:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-07-21 10:58:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 10:58:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-07-21 10:58:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-07-21 10:58:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2022-07-21 10:58:55,633 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2022-07-21 10:58:55,633 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-07-21 10:58:55,633 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-07-21 10:58:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure can_led_event [2022-07-21 10:58:55,634 INFO L138 BoogieDeclarations]: Found implementation of procedure can_led_event [2022-07-21 10:58:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 10:58:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 10:58:55,634 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_disconnect [2022-07-21 10:58:55,634 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_disconnect [2022-07-21 10:58:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure netif_device_detach [2022-07-21 10:58:55,635 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_device_detach [2022-07-21 10:58:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-21 10:58:55,635 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-21 10:58:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-07-21 10:58:55,635 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-07-21 10:58:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-07-21 10:58:55,636 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-07-21 10:58:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-07-21 10:58:55,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-07-21 10:58:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure close_candev [2022-07-21 10:58:55,636 INFO L138 BoogieDeclarations]: Found implementation of procedure close_candev [2022-07-21 10:58:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 10:58:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure free_candev [2022-07-21 10:58:55,637 INFO L138 BoogieDeclarations]: Found implementation of procedure free_candev [2022-07-21 10:58:55,637 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-07-21 10:58:55,637 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-07-21 10:58:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-21 10:58:55,638 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_send_cmd [2022-07-21 10:58:55,638 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_send_cmd [2022-07-21 10:58:55,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-21 10:58:55,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-21 10:58:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 10:58:55,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 10:58:55,640 INFO L130 BoogieDeclarations]: Found specification of procedure usb_8dev_cmd_open [2022-07-21 10:58:55,640 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_8dev_cmd_open [2022-07-21 10:58:56,191 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 10:58:56,206 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 10:58:56,382 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 10:58:56,894 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-07-21 10:58:59,611 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 10:58:59,622 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 10:58:59,622 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 10:58:59,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:58:59 BoogieIcfgContainer [2022-07-21 10:58:59,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 10:58:59,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 10:58:59,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 10:58:59,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 10:58:59,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:58:53" (1/3) ... [2022-07-21 10:58:59,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b281f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:58:59, skipping insertion in model container [2022-07-21 10:58:59,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:58:55" (2/3) ... [2022-07-21 10:58:59,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b281f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:58:59, skipping insertion in model container [2022-07-21 10:58:59,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:58:59" (3/3) ... [2022-07-21 10:58:59,631 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--can--usb--usb_8dev.ko-entry_point.cil.out.i [2022-07-21 10:58:59,643 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 10:58:59,643 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 10:58:59,693 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 10:58:59,698 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6f734a59, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@53cafb99 [2022-07-21 10:58:59,698 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 10:58:59,704 INFO L276 IsEmpty]: Start isEmpty. Operand has 675 states, 499 states have (on average 1.3547094188376754) internal successors, (676), 518 states have internal predecessors, (676), 132 states have call successors, (132), 44 states have call predecessors, (132), 42 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) [2022-07-21 10:58:59,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-21 10:58:59,713 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:58:59,713 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:58:59,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:58:59,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:58:59,718 INFO L85 PathProgramCache]: Analyzing trace with hash 180613716, now seen corresponding path program 1 times [2022-07-21 10:58:59,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:58:59,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763861743] [2022-07-21 10:58:59,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:58:59,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:58:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:00,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:59:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:00,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 10:59:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:00,176 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 10:59:00,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:59:00,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763861743] [2022-07-21 10:59:00,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763861743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:59:00,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:59:00,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:59:00,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178644931] [2022-07-21 10:59:00,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:59:00,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:59:00,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:59:00,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:59:00,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:59:00,212 INFO L87 Difference]: Start difference. First operand has 675 states, 499 states have (on average 1.3547094188376754) internal successors, (676), 518 states have internal predecessors, (676), 132 states have call successors, (132), 44 states have call predecessors, (132), 42 states have return successors, (126), 125 states have call predecessors, (126), 126 states have call successors, (126) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 10:59:03,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:59:03,684 INFO L93 Difference]: Finished difference Result 2087 states and 2983 transitions. [2022-07-21 10:59:03,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:59:03,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-07-21 10:59:03,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:59:03,704 INFO L225 Difference]: With dead ends: 2087 [2022-07-21 10:59:03,704 INFO L226 Difference]: Without dead ends: 1393 [2022-07-21 10:59:03,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:59:03,712 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 1147 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-21 10:59:03,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 2079 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-21 10:59:03,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2022-07-21 10:59:03,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1287. [2022-07-21 10:59:03,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 961 states have (on average 1.3121748178980228) internal successors, (1261), 979 states have internal predecessors, (1261), 243 states have call successors, (243), 83 states have call predecessors, (243), 82 states have return successors, (238), 236 states have call predecessors, (238), 238 states have call successors, (238) [2022-07-21 10:59:03,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1742 transitions. [2022-07-21 10:59:03,826 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1742 transitions. Word has length 28 [2022-07-21 10:59:03,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:59:03,827 INFO L495 AbstractCegarLoop]: Abstraction has 1287 states and 1742 transitions. [2022-07-21 10:59:03,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 10:59:03,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1742 transitions. [2022-07-21 10:59:03,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-21 10:59:03,830 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:59:03,830 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:59:03,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 10:59:03,831 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:59:03,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:59:03,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1706361993, now seen corresponding path program 1 times [2022-07-21 10:59:03,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:59:03,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995773759] [2022-07-21 10:59:03,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:59:03,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:59:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:03,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:59:03,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:03,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 10:59:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:03,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 10:59:03,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:04,002 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 10:59:04,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:59:04,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995773759] [2022-07-21 10:59:04,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995773759] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:59:04,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:59:04,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:59:04,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459646080] [2022-07-21 10:59:04,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:59:04,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:59:04,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:59:04,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:59:04,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:59:04,005 INFO L87 Difference]: Start difference. First operand 1287 states and 1742 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 10:59:06,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:59:06,979 INFO L93 Difference]: Finished difference Result 4058 states and 5609 transitions. [2022-07-21 10:59:06,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 10:59:06,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-07-21 10:59:06,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:59:06,994 INFO L225 Difference]: With dead ends: 4058 [2022-07-21 10:59:06,995 INFO L226 Difference]: Without dead ends: 2778 [2022-07-21 10:59:06,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:59:07,006 INFO L413 NwaCegarLoop]: 1297 mSDtfsCounter, 1053 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 2530 SdHoareTripleChecker+Invalid, 1032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-21 10:59:07,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 2530 Invalid, 1032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-21 10:59:07,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2022-07-21 10:59:07,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 2556. [2022-07-21 10:59:07,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2556 states, 1912 states have (on average 1.3106694560669456) internal successors, (2506), 1944 states have internal predecessors, (2506), 479 states have call successors, (479), 165 states have call predecessors, (479), 164 states have return successors, (488), 470 states have call predecessors, (488), 474 states have call successors, (488) [2022-07-21 10:59:07,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2556 states to 2556 states and 3473 transitions. [2022-07-21 10:59:07,131 INFO L78 Accepts]: Start accepts. Automaton has 2556 states and 3473 transitions. Word has length 38 [2022-07-21 10:59:07,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:59:07,132 INFO L495 AbstractCegarLoop]: Abstraction has 2556 states and 3473 transitions. [2022-07-21 10:59:07,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 10:59:07,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2556 states and 3473 transitions. [2022-07-21 10:59:07,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-21 10:59:07,134 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:59:07,134 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:59:07,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 10:59:07,135 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:59:07,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:59:07,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1357219976, now seen corresponding path program 1 times [2022-07-21 10:59:07,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:59:07,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961912005] [2022-07-21 10:59:07,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:59:07,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:59:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:07,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:59:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:07,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 10:59:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:07,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 10:59:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:07,295 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 10:59:07,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:59:07,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961912005] [2022-07-21 10:59:07,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961912005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:59:07,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:59:07,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:59:07,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255652825] [2022-07-21 10:59:07,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:59:07,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:59:07,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:59:07,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:59:07,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:59:07,301 INFO L87 Difference]: Start difference. First operand 2556 states and 3473 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 10:59:10,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:59:10,104 INFO L93 Difference]: Finished difference Result 2770 states and 3852 transitions. [2022-07-21 10:59:10,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 10:59:10,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-07-21 10:59:10,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:59:10,119 INFO L225 Difference]: With dead ends: 2770 [2022-07-21 10:59:10,119 INFO L226 Difference]: Without dead ends: 2767 [2022-07-21 10:59:10,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:59:10,121 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 976 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-21 10:59:10,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 1249 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-21 10:59:10,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2767 states. [2022-07-21 10:59:10,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2767 to 2555. [2022-07-21 10:59:10,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2555 states, 1912 states have (on average 1.3101464435146444) internal successors, (2505), 1943 states have internal predecessors, (2505), 478 states have call successors, (478), 165 states have call predecessors, (478), 164 states have return successors, (488), 470 states have call predecessors, (488), 474 states have call successors, (488) [2022-07-21 10:59:10,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2555 states to 2555 states and 3471 transitions. [2022-07-21 10:59:10,269 INFO L78 Accepts]: Start accepts. Automaton has 2555 states and 3471 transitions. Word has length 39 [2022-07-21 10:59:10,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:59:10,270 INFO L495 AbstractCegarLoop]: Abstraction has 2555 states and 3471 transitions. [2022-07-21 10:59:10,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 10:59:10,270 INFO L276 IsEmpty]: Start isEmpty. Operand 2555 states and 3471 transitions. [2022-07-21 10:59:10,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-21 10:59:10,275 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:59:10,276 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:59:10,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 10:59:10,276 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:59:10,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:59:10,277 INFO L85 PathProgramCache]: Analyzing trace with hash -876243092, now seen corresponding path program 1 times [2022-07-21 10:59:10,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:59:10,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634368976] [2022-07-21 10:59:10,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:59:10,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:59:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:10,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:59:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:10,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 10:59:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 10:59:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:10,417 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 10:59:10,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:59:10,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634368976] [2022-07-21 10:59:10,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634368976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:59:10,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:59:10,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:59:10,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249937229] [2022-07-21 10:59:10,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:59:10,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:59:10,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:59:10,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:59:10,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:59:10,420 INFO L87 Difference]: Start difference. First operand 2555 states and 3471 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 10:59:12,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:59:12,364 INFO L93 Difference]: Finished difference Result 2769 states and 3850 transitions. [2022-07-21 10:59:12,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 10:59:12,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-07-21 10:59:12,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:59:12,377 INFO L225 Difference]: With dead ends: 2769 [2022-07-21 10:59:12,377 INFO L226 Difference]: Without dead ends: 2766 [2022-07-21 10:59:12,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:59:12,379 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 974 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 10:59:12,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 1244 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 10:59:12,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2766 states. [2022-07-21 10:59:12,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2766 to 2554. [2022-07-21 10:59:12,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2554 states, 1912 states have (on average 1.3096234309623431) internal successors, (2504), 1942 states have internal predecessors, (2504), 477 states have call successors, (477), 165 states have call predecessors, (477), 164 states have return successors, (488), 470 states have call predecessors, (488), 474 states have call successors, (488) [2022-07-21 10:59:12,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2554 states to 2554 states and 3469 transitions. [2022-07-21 10:59:12,477 INFO L78 Accepts]: Start accepts. Automaton has 2554 states and 3469 transitions. Word has length 40 [2022-07-21 10:59:12,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:59:12,480 INFO L495 AbstractCegarLoop]: Abstraction has 2554 states and 3469 transitions. [2022-07-21 10:59:12,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 10:59:12,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2554 states and 3469 transitions. [2022-07-21 10:59:12,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-21 10:59:12,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:59:12,481 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:59:12,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 10:59:12,482 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:59:12,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:59:12,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1394116597, now seen corresponding path program 1 times [2022-07-21 10:59:12,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:59:12,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427090493] [2022-07-21 10:59:12,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:59:12,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:59:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:12,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:59:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:12,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 10:59:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:12,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 10:59:12,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:12,612 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 10:59:12,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:59:12,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427090493] [2022-07-21 10:59:12,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427090493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:59:12,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:59:12,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:59:12,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559680846] [2022-07-21 10:59:12,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:59:12,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:59:12,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:59:12,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:59:12,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:59:12,615 INFO L87 Difference]: Start difference. First operand 2554 states and 3469 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 10:59:13,891 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 10:59:15,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:59:15,199 INFO L93 Difference]: Finished difference Result 2768 states and 3848 transitions. [2022-07-21 10:59:15,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 10:59:15,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-07-21 10:59:15,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:59:15,213 INFO L225 Difference]: With dead ends: 2768 [2022-07-21 10:59:15,213 INFO L226 Difference]: Without dead ends: 2765 [2022-07-21 10:59:15,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:59:15,216 INFO L413 NwaCegarLoop]: 857 mSDtfsCounter, 964 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 10:59:15,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 1251 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-21 10:59:15,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2022-07-21 10:59:15,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2553. [2022-07-21 10:59:15,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2553 states, 1912 states have (on average 1.3091004184100419) internal successors, (2503), 1941 states have internal predecessors, (2503), 476 states have call successors, (476), 165 states have call predecessors, (476), 164 states have return successors, (488), 470 states have call predecessors, (488), 474 states have call successors, (488) [2022-07-21 10:59:15,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2553 states to 2553 states and 3467 transitions. [2022-07-21 10:59:15,333 INFO L78 Accepts]: Start accepts. Automaton has 2553 states and 3467 transitions. Word has length 41 [2022-07-21 10:59:15,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:59:15,334 INFO L495 AbstractCegarLoop]: Abstraction has 2553 states and 3467 transitions. [2022-07-21 10:59:15,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 10:59:15,334 INFO L276 IsEmpty]: Start isEmpty. Operand 2553 states and 3467 transitions. [2022-07-21 10:59:15,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-21 10:59:15,335 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:59:15,335 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:59:15,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 10:59:15,336 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:59:15,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:59:15,336 INFO L85 PathProgramCache]: Analyzing trace with hash -268321201, now seen corresponding path program 1 times [2022-07-21 10:59:15,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:59:15,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362546584] [2022-07-21 10:59:15,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:59:15,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:59:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:15,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:59:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:15,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 10:59:15,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:15,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 10:59:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:15,501 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 10:59:15,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:59:15,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362546584] [2022-07-21 10:59:15,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362546584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:59:15,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:59:15,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 10:59:15,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217700548] [2022-07-21 10:59:15,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:59:15,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:59:15,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:59:15,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:59:15,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 10:59:15,504 INFO L87 Difference]: Start difference. First operand 2553 states and 3467 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 10:59:17,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:59:17,458 INFO L93 Difference]: Finished difference Result 2767 states and 3846 transitions. [2022-07-21 10:59:17,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 10:59:17,458 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-07-21 10:59:17,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:59:17,471 INFO L225 Difference]: With dead ends: 2767 [2022-07-21 10:59:17,472 INFO L226 Difference]: Without dead ends: 2755 [2022-07-21 10:59:17,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 10:59:17,473 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 963 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-21 10:59:17,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1051 Valid, 1244 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-21 10:59:17,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2022-07-21 10:59:17,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 2543. [2022-07-21 10:59:17,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2543 states, 1903 states have (on average 1.3084603258013663) internal successors, (2490), 1931 states have internal predecessors, (2490), 475 states have call successors, (475), 165 states have call predecessors, (475), 164 states have return successors, (488), 470 states have call predecessors, (488), 474 states have call successors, (488) [2022-07-21 10:59:17,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2543 states to 2543 states and 3453 transitions. [2022-07-21 10:59:17,573 INFO L78 Accepts]: Start accepts. Automaton has 2543 states and 3453 transitions. Word has length 42 [2022-07-21 10:59:17,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:59:17,575 INFO L495 AbstractCegarLoop]: Abstraction has 2543 states and 3453 transitions. [2022-07-21 10:59:17,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-21 10:59:17,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2543 states and 3453 transitions. [2022-07-21 10:59:17,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-21 10:59:17,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:59:17,580 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:59:17,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 10:59:17,580 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:59:17,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:59:17,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1697593493, now seen corresponding path program 1 times [2022-07-21 10:59:17,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:59:17,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494760959] [2022-07-21 10:59:17,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:59:17,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:59:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:17,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:59:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:17,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 10:59:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:17,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 10:59:17,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:17,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 10:59:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:17,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:59:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:17,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 10:59:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:17,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 10:59:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:17,758 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 10:59:17,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:59:17,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494760959] [2022-07-21 10:59:17,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494760959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:59:17,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:59:17,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 10:59:17,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607288457] [2022-07-21 10:59:17,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:59:17,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 10:59:17,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:59:17,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 10:59:17,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 10:59:17,761 INFO L87 Difference]: Start difference. First operand 2543 states and 3453 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 10:59:23,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:59:23,323 INFO L93 Difference]: Finished difference Result 6188 states and 8443 transitions. [2022-07-21 10:59:23,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 10:59:23,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 82 [2022-07-21 10:59:23,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:59:23,340 INFO L225 Difference]: With dead ends: 6188 [2022-07-21 10:59:23,340 INFO L226 Difference]: Without dead ends: 3652 [2022-07-21 10:59:23,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-21 10:59:23,348 INFO L413 NwaCegarLoop]: 945 mSDtfsCounter, 672 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-21 10:59:23,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 2662 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-21 10:59:23,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3652 states. [2022-07-21 10:59:23,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3652 to 3336. [2022-07-21 10:59:23,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3336 states, 2500 states have (on average 1.292) internal successors, (3230), 2536 states have internal predecessors, (3230), 598 states have call successors, (598), 232 states have call predecessors, (598), 237 states have return successors, (629), 595 states have call predecessors, (629), 597 states have call successors, (629) [2022-07-21 10:59:23,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 4457 transitions. [2022-07-21 10:59:23,511 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 4457 transitions. Word has length 82 [2022-07-21 10:59:23,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:59:23,512 INFO L495 AbstractCegarLoop]: Abstraction has 3336 states and 4457 transitions. [2022-07-21 10:59:23,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-21 10:59:23,512 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 4457 transitions. [2022-07-21 10:59:23,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-21 10:59:23,516 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:59:23,516 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:59:23,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 10:59:23,517 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:59:23,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:59:23,517 INFO L85 PathProgramCache]: Analyzing trace with hash -205661992, now seen corresponding path program 1 times [2022-07-21 10:59:23,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:59:23,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555420339] [2022-07-21 10:59:23,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:59:23,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:59:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:23,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:59:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:23,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 10:59:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:23,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 10:59:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:23,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 10:59:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:23,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 10:59:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:23,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 10:59:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:23,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:59:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:23,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 10:59:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:23,676 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 10:59:23,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:59:23,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555420339] [2022-07-21 10:59:23,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555420339] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:59:23,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:59:23,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 10:59:23,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050506458] [2022-07-21 10:59:23,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:59:23,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 10:59:23,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:59:23,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 10:59:23,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 10:59:23,679 INFO L87 Difference]: Start difference. First operand 3336 states and 4457 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 10:59:26,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:59:26,322 INFO L93 Difference]: Finished difference Result 7820 states and 10545 transitions. [2022-07-21 10:59:26,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 10:59:26,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 98 [2022-07-21 10:59:26,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:59:26,341 INFO L225 Difference]: With dead ends: 7820 [2022-07-21 10:59:26,341 INFO L226 Difference]: Without dead ends: 4498 [2022-07-21 10:59:26,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-21 10:59:26,351 INFO L413 NwaCegarLoop]: 1073 mSDtfsCounter, 833 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 10:59:26,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 2168 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-21 10:59:26,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4498 states. [2022-07-21 10:59:26,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4498 to 4146. [2022-07-21 10:59:26,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4146 states, 3124 states have (on average 1.2842509603072982) internal successors, (4012), 3164 states have internal predecessors, (4012), 718 states have call successors, (718), 298 states have call predecessors, (718), 303 states have return successors, (749), 715 states have call predecessors, (749), 717 states have call successors, (749) [2022-07-21 10:59:26,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4146 states to 4146 states and 5479 transitions. [2022-07-21 10:59:26,545 INFO L78 Accepts]: Start accepts. Automaton has 4146 states and 5479 transitions. Word has length 98 [2022-07-21 10:59:26,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:59:26,546 INFO L495 AbstractCegarLoop]: Abstraction has 4146 states and 5479 transitions. [2022-07-21 10:59:26,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-21 10:59:26,547 INFO L276 IsEmpty]: Start isEmpty. Operand 4146 states and 5479 transitions. [2022-07-21 10:59:26,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-21 10:59:26,551 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:59:26,551 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:59:26,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 10:59:26,552 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:59:26,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:59:26,552 INFO L85 PathProgramCache]: Analyzing trace with hash 365587288, now seen corresponding path program 1 times [2022-07-21 10:59:26,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:59:26,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537323315] [2022-07-21 10:59:26,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:59:26,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:59:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:26,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:59:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:26,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 10:59:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:26,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 10:59:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:26,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 10:59:26,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:26,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 10:59:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:26,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 10:59:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:26,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:59:26,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:26,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 10:59:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:26,750 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-21 10:59:26,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:59:26,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537323315] [2022-07-21 10:59:26,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537323315] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 10:59:26,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035603556] [2022-07-21 10:59:26,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:59:26,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 10:59:26,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 10:59:26,760 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 10:59:26,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 10:59:27,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:27,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 1402 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 10:59:27,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:59:27,252 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-21 10:59:27,253 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:59:27,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035603556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:59:27,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 10:59:27,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 10:59:27,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595492494] [2022-07-21 10:59:27,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:59:27,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:59:27,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:59:27,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:59:27,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 10:59:27,255 INFO L87 Difference]: Start difference. First operand 4146 states and 5479 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 10:59:27,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:59:27,520 INFO L93 Difference]: Finished difference Result 10000 states and 13166 transitions. [2022-07-21 10:59:27,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:59:27,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 110 [2022-07-21 10:59:27,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:59:27,554 INFO L225 Difference]: With dead ends: 10000 [2022-07-21 10:59:27,554 INFO L226 Difference]: Without dead ends: 5868 [2022-07-21 10:59:27,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 10:59:27,567 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 705 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:59:27,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 1703 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 10:59:27,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5868 states. [2022-07-21 10:59:27,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5868 to 5860. [2022-07-21 10:59:27,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5860 states, 4444 states have (on average 1.2916291629162917) internal successors, (5740), 4508 states have internal predecessors, (5740), 952 states have call successors, (952), 452 states have call predecessors, (952), 463 states have return successors, (997), 947 states have call predecessors, (997), 951 states have call successors, (997) [2022-07-21 10:59:27,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5860 states to 5860 states and 7689 transitions. [2022-07-21 10:59:27,801 INFO L78 Accepts]: Start accepts. Automaton has 5860 states and 7689 transitions. Word has length 110 [2022-07-21 10:59:27,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:59:27,803 INFO L495 AbstractCegarLoop]: Abstraction has 5860 states and 7689 transitions. [2022-07-21 10:59:27,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-21 10:59:27,803 INFO L276 IsEmpty]: Start isEmpty. Operand 5860 states and 7689 transitions. [2022-07-21 10:59:27,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-21 10:59:27,808 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:59:27,809 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:59:27,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 10:59:28,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 10:59:28,035 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:59:28,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:59:28,035 INFO L85 PathProgramCache]: Analyzing trace with hash 788456162, now seen corresponding path program 1 times [2022-07-21 10:59:28,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:59:28,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72454722] [2022-07-21 10:59:28,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:59:28,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:59:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:28,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:59:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:28,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 10:59:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:28,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 10:59:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:28,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 10:59:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:28,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 10:59:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:28,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 10:59:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:28,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 10:59:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:28,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:59:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:28,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 10:59:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:28,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 10:59:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:28,306 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 10:59:28,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:59:28,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72454722] [2022-07-21 10:59:28,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72454722] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 10:59:28,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007398774] [2022-07-21 10:59:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:59:28,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 10:59:28,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 10:59:28,308 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 10:59:28,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 10:59:28,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:28,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 1384 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 10:59:28,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:59:28,935 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-07-21 10:59:28,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:59:28,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007398774] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:59:28,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 10:59:28,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 8 [2022-07-21 10:59:28,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646969101] [2022-07-21 10:59:28,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:59:28,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 10:59:28,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:59:28,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 10:59:28,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 10:59:28,938 INFO L87 Difference]: Start difference. First operand 5860 states and 7689 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 10:59:30,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:59:30,005 INFO L93 Difference]: Finished difference Result 17554 states and 23034 transitions. [2022-07-21 10:59:30,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 10:59:30,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 121 [2022-07-21 10:59:30,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:59:30,070 INFO L225 Difference]: With dead ends: 17554 [2022-07-21 10:59:30,071 INFO L226 Difference]: Without dead ends: 17546 [2022-07-21 10:59:30,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 10:59:30,080 INFO L413 NwaCegarLoop]: 1292 mSDtfsCounter, 1682 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1682 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-21 10:59:30,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1682 Valid, 2904 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-21 10:59:30,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17546 states. [2022-07-21 10:59:30,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17546 to 17516. [2022-07-21 10:59:30,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17516 states, 13280 states have (on average 1.2923192771084338) internal successors, (17162), 13488 states have internal predecessors, (17162), 2848 states have call successors, (2848), 1352 states have call predecessors, (2848), 1387 states have return successors, (2985), 2819 states have call predecessors, (2985), 2847 states have call successors, (2985) [2022-07-21 10:59:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17516 states to 17516 states and 22995 transitions. [2022-07-21 10:59:30,898 INFO L78 Accepts]: Start accepts. Automaton has 17516 states and 22995 transitions. Word has length 121 [2022-07-21 10:59:30,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:59:30,899 INFO L495 AbstractCegarLoop]: Abstraction has 17516 states and 22995 transitions. [2022-07-21 10:59:30,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 10:59:30,899 INFO L276 IsEmpty]: Start isEmpty. Operand 17516 states and 22995 transitions. [2022-07-21 10:59:30,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-21 10:59:30,915 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:59:30,915 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:59:30,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-21 10:59:31,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 10:59:31,131 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:59:31,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:59:31,132 INFO L85 PathProgramCache]: Analyzing trace with hash 132062103, now seen corresponding path program 1 times [2022-07-21 10:59:31,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:59:31,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168118806] [2022-07-21 10:59:31,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:59:31,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:59:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:31,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:59:31,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:31,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 10:59:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:31,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 10:59:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:31,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 10:59:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:31,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 10:59:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:31,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 10:59:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:31,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 10:59:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:31,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:59:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:31,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 10:59:31,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:31,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 10:59:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:31,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 10:59:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:31,368 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-21 10:59:31,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:59:31,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168118806] [2022-07-21 10:59:31,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168118806] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 10:59:31,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299533088] [2022-07-21 10:59:31,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:59:31,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 10:59:31,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 10:59:31,371 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 10:59:31,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 10:59:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:31,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 10:59:31,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:59:31,944 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 10:59:31,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:59:31,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299533088] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:59:31,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 10:59:31,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-21 10:59:31,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080717450] [2022-07-21 10:59:31,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:59:31,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:59:31,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:59:31,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:59:31,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-21 10:59:31,948 INFO L87 Difference]: Start difference. First operand 17516 states and 22995 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 10:59:32,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:59:32,483 INFO L93 Difference]: Finished difference Result 26688 states and 35032 transitions. [2022-07-21 10:59:32,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:59:32,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 131 [2022-07-21 10:59:32,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:59:32,512 INFO L225 Difference]: With dead ends: 26688 [2022-07-21 10:59:32,512 INFO L226 Difference]: Without dead ends: 8638 [2022-07-21 10:59:32,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-21 10:59:32,558 INFO L413 NwaCegarLoop]: 1053 mSDtfsCounter, 782 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 10:59:32,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 1306 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 10:59:32,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8638 states. [2022-07-21 10:59:32,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8638 to 8638. [2022-07-21 10:59:32,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8638 states, 6543 states have (on average 1.2888583218707015) internal successors, (8433), 6647 states have internal predecessors, (8433), 1408 states have call successors, (1408), 669 states have call predecessors, (1408), 686 states have return successors, (1476), 1393 states have call predecessors, (1476), 1407 states have call successors, (1476) [2022-07-21 10:59:32,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8638 states to 8638 states and 11317 transitions. [2022-07-21 10:59:32,962 INFO L78 Accepts]: Start accepts. Automaton has 8638 states and 11317 transitions. Word has length 131 [2022-07-21 10:59:32,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:59:32,962 INFO L495 AbstractCegarLoop]: Abstraction has 8638 states and 11317 transitions. [2022-07-21 10:59:32,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-21 10:59:32,963 INFO L276 IsEmpty]: Start isEmpty. Operand 8638 states and 11317 transitions. [2022-07-21 10:59:32,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-21 10:59:32,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:59:32,973 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:59:33,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 10:59:33,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 10:59:33,202 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:59:33,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:59:33,203 INFO L85 PathProgramCache]: Analyzing trace with hash 499145123, now seen corresponding path program 1 times [2022-07-21 10:59:33,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:59:33,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998251012] [2022-07-21 10:59:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:59:33,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:59:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:33,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:59:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:33,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 10:59:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:33,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 10:59:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:33,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 10:59:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:33,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 10:59:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:33,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 10:59:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:33,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 10:59:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:33,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:59:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:33,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 10:59:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:33,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 10:59:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-21 10:59:33,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:59:33,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998251012] [2022-07-21 10:59:33,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998251012] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 10:59:33,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755586555] [2022-07-21 10:59:33,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:59:33,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 10:59:33,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 10:59:33,375 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 10:59:33,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 10:59:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:33,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 1421 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 10:59:33,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 10:59:33,859 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-21 10:59:33,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 10:59:33,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755586555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:59:33,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 10:59:33,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-21 10:59:33,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051016291] [2022-07-21 10:59:33,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:59:33,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 10:59:33,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:59:33,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 10:59:33,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 10:59:33,863 INFO L87 Difference]: Start difference. First operand 8638 states and 11317 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-21 10:59:34,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:59:34,456 INFO L93 Difference]: Finished difference Result 16640 states and 21845 transitions. [2022-07-21 10:59:34,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 10:59:34,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 133 [2022-07-21 10:59:34,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:59:34,485 INFO L225 Difference]: With dead ends: 16640 [2022-07-21 10:59:34,485 INFO L226 Difference]: Without dead ends: 8646 [2022-07-21 10:59:34,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 10:59:34,506 INFO L413 NwaCegarLoop]: 1353 mSDtfsCounter, 687 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 2054 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 10:59:34,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 2054 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 10:59:34,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8646 states. [2022-07-21 10:59:34,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8646 to 8638. [2022-07-21 10:59:34,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8638 states, 6543 states have (on average 1.285648784961027) internal successors, (8412), 6647 states have internal predecessors, (8412), 1408 states have call successors, (1408), 669 states have call predecessors, (1408), 686 states have return successors, (1476), 1393 states have call predecessors, (1476), 1407 states have call successors, (1476) [2022-07-21 10:59:34,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8638 states to 8638 states and 11296 transitions. [2022-07-21 10:59:34,933 INFO L78 Accepts]: Start accepts. Automaton has 8638 states and 11296 transitions. Word has length 133 [2022-07-21 10:59:34,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:59:34,934 INFO L495 AbstractCegarLoop]: Abstraction has 8638 states and 11296 transitions. [2022-07-21 10:59:34,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-21 10:59:34,934 INFO L276 IsEmpty]: Start isEmpty. Operand 8638 states and 11296 transitions. [2022-07-21 10:59:34,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-21 10:59:34,944 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:59:34,944 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:59:34,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 10:59:35,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 10:59:35,167 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:59:35,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:59:35,168 INFO L85 PathProgramCache]: Analyzing trace with hash 561184737, now seen corresponding path program 1 times [2022-07-21 10:59:35,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:59:35,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330412712] [2022-07-21 10:59:35,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:59:35,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:59:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:35,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:59:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:35,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 10:59:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:35,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 10:59:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:35,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 10:59:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:35,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 10:59:35,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:35,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 10:59:35,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:35,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 10:59:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:35,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:59:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:35,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 10:59:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:35,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 10:59:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 10:59:35,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:59:35,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330412712] [2022-07-21 10:59:35,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330412712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:59:35,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:59:35,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 10:59:35,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115566587] [2022-07-21 10:59:35,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:59:35,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 10:59:35,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:59:35,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 10:59:35,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 10:59:35,435 INFO L87 Difference]: Start difference. First operand 8638 states and 11296 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 10:59:38,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:59:38,043 INFO L93 Difference]: Finished difference Result 17510 states and 23251 transitions. [2022-07-21 10:59:38,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 10:59:38,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 133 [2022-07-21 10:59:38,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:59:38,080 INFO L225 Difference]: With dead ends: 17510 [2022-07-21 10:59:38,080 INFO L226 Difference]: Without dead ends: 9516 [2022-07-21 10:59:38,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-07-21 10:59:38,102 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 593 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 1311 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 2896 SdHoareTripleChecker+Invalid, 1809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 1311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 10:59:38,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 2896 Invalid, 1809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 1311 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 10:59:38,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9516 states. [2022-07-21 10:59:38,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9516 to 8680. [2022-07-21 10:59:38,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8680 states, 6573 states have (on average 1.2843450479233227) internal successors, (8442), 6677 states have internal predecessors, (8442), 1414 states have call successors, (1414), 669 states have call predecessors, (1414), 692 states have return successors, (1524), 1405 states have call predecessors, (1524), 1413 states have call successors, (1524) [2022-07-21 10:59:38,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8680 states to 8680 states and 11380 transitions. [2022-07-21 10:59:38,522 INFO L78 Accepts]: Start accepts. Automaton has 8680 states and 11380 transitions. Word has length 133 [2022-07-21 10:59:38,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:59:38,523 INFO L495 AbstractCegarLoop]: Abstraction has 8680 states and 11380 transitions. [2022-07-21 10:59:38,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-21 10:59:38,523 INFO L276 IsEmpty]: Start isEmpty. Operand 8680 states and 11380 transitions. [2022-07-21 10:59:38,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 10:59:38,536 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:59:38,536 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:59:38,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 10:59:38,537 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:59:38,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:59:38,537 INFO L85 PathProgramCache]: Analyzing trace with hash 251715157, now seen corresponding path program 1 times [2022-07-21 10:59:38,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:59:38,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853494513] [2022-07-21 10:59:38,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:59:38,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:59:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:38,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:59:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:38,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 10:59:38,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:38,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 10:59:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:38,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 10:59:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:38,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 10:59:38,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:38,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 10:59:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:38,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 10:59:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:38,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:59:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:38,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:59:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:38,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 10:59:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:38,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-21 10:59:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:38,994 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 10:59:38,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:59:38,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853494513] [2022-07-21 10:59:38,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853494513] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:59:38,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:59:38,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 10:59:38,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029316386] [2022-07-21 10:59:38,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:59:38,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 10:59:38,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:59:38,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 10:59:38,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-21 10:59:38,997 INFO L87 Difference]: Start difference. First operand 8680 states and 11380 transitions. Second operand has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 9 states have internal predecessors, (97), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-21 10:59:48,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:59:48,223 INFO L93 Difference]: Finished difference Result 22673 states and 31088 transitions. [2022-07-21 10:59:48,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-21 10:59:48,223 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 9 states have internal predecessors, (97), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) Word has length 139 [2022-07-21 10:59:48,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:59:48,270 INFO L225 Difference]: With dead ends: 22673 [2022-07-21 10:59:48,270 INFO L226 Difference]: Without dead ends: 14637 [2022-07-21 10:59:48,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2022-07-21 10:59:48,293 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 3335 mSDsluCounter, 9769 mSDsCounter, 0 mSdLazyCounter, 7625 mSolverCounterSat, 1321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3485 SdHoareTripleChecker+Valid, 11308 SdHoareTripleChecker+Invalid, 8946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1321 IncrementalHoareTripleChecker+Valid, 7625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-07-21 10:59:48,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3485 Valid, 11308 Invalid, 8946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1321 Valid, 7625 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-07-21 10:59:48,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14637 states. [2022-07-21 10:59:48,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14637 to 8680. [2022-07-21 10:59:48,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8680 states, 6573 states have (on average 1.283888635326335) internal successors, (8439), 6677 states have internal predecessors, (8439), 1414 states have call successors, (1414), 669 states have call predecessors, (1414), 692 states have return successors, (1524), 1405 states have call predecessors, (1524), 1413 states have call successors, (1524) [2022-07-21 10:59:49,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8680 states to 8680 states and 11377 transitions. [2022-07-21 10:59:49,012 INFO L78 Accepts]: Start accepts. Automaton has 8680 states and 11377 transitions. Word has length 139 [2022-07-21 10:59:49,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 10:59:49,013 INFO L495 AbstractCegarLoop]: Abstraction has 8680 states and 11377 transitions. [2022-07-21 10:59:49,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 9 states have internal predecessors, (97), 4 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-21 10:59:49,013 INFO L276 IsEmpty]: Start isEmpty. Operand 8680 states and 11377 transitions. [2022-07-21 10:59:49,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-21 10:59:49,024 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 10:59:49,025 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 10:59:49,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 10:59:49,025 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 10:59:49,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 10:59:49,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1805577788, now seen corresponding path program 1 times [2022-07-21 10:59:49,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 10:59:49,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844937404] [2022-07-21 10:59:49,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 10:59:49,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 10:59:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:49,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:59:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:49,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 10:59:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:49,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 10:59:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:49,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 10:59:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:49,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 10:59:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:49,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 10:59:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:49,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 10:59:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:49,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 10:59:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:49,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 10:59:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:49,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 10:59:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:49,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 10:59:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:49,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 10:59:49,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 10:59:49,232 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-21 10:59:49,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 10:59:49,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844937404] [2022-07-21 10:59:49,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844937404] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 10:59:49,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 10:59:49,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 10:59:49,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603750570] [2022-07-21 10:59:49,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 10:59:49,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 10:59:49,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 10:59:49,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 10:59:49,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 10:59:49,236 INFO L87 Difference]: Start difference. First operand 8680 states and 11377 transitions. Second operand has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 10:59:59,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 10:59:59,383 INFO L93 Difference]: Finished difference Result 21380 states and 29595 transitions. [2022-07-21 10:59:59,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 10:59:59,384 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (13), 7 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 152 [2022-07-21 10:59:59,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 10:59:59,436 INFO L225 Difference]: With dead ends: 21380 [2022-07-21 10:59:59,436 INFO L226 Difference]: Without dead ends: 13344 [2022-07-21 10:59:59,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-07-21 10:59:59,537 INFO L413 NwaCegarLoop]: 1064 mSDtfsCounter, 1464 mSDsluCounter, 2890 mSDsCounter, 0 mSdLazyCounter, 2800 mSolverCounterSat, 860 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 3954 SdHoareTripleChecker+Invalid, 3660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 860 IncrementalHoareTripleChecker+Valid, 2800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-07-21 10:59:59,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 3954 Invalid, 3660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [860 Valid, 2800 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-07-21 10:59:59,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13344 states. [2022-07-21 11:00:00,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13344 to 8692. [2022-07-21 11:00:00,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8692 states, 6585 states have (on average 1.283371298405467) internal successors, (8451), 6689 states have internal predecessors, (8451), 1414 states have call successors, (1414), 669 states have call predecessors, (1414), 692 states have return successors, (1524), 1405 states have call predecessors, (1524), 1413 states have call successors, (1524) [2022-07-21 11:00:00,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8692 states to 8692 states and 11389 transitions. [2022-07-21 11:00:00,357 INFO L78 Accepts]: Start accepts. Automaton has 8692 states and 11389 transitions. Word has length 152 [2022-07-21 11:00:00,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:00:00,357 INFO L495 AbstractCegarLoop]: Abstraction has 8692 states and 11389 transitions. [2022-07-21 11:00:00,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.11111111111111) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-21 11:00:00,357 INFO L276 IsEmpty]: Start isEmpty. Operand 8692 states and 11389 transitions. [2022-07-21 11:00:00,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-07-21 11:00:00,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:00:00,369 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:00:00,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 11:00:00,370 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:00:00,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:00:00,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1928727396, now seen corresponding path program 1 times [2022-07-21 11:00:00,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:00:00,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374469764] [2022-07-21 11:00:00,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:00:00,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:00:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:00,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:00,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:00:00,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:00,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 11:00:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:00,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 11:00:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:00,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 11:00:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:00,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:00:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:00,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 11:00:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:00,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:00:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:00,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:00,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:00:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:00,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:00:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:00,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:00:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:00,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 11:00:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:01,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 11:00:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:01,070 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 11:00:01,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:00:01,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374469764] [2022-07-21 11:00:01,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374469764] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:00:01,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856505874] [2022-07-21 11:00:01,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:00:01,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:00:01,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:00:01,076 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:00:01,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 11:00:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:01,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 1543 conjuncts, 72 conjunts are in the unsatisfiable core [2022-07-21 11:00:01,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:00:02,094 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 11:00:02,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:00:02,801 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-21 11:00:02,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856505874] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 11:00:02,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 11:00:02,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [19, 16] total 29 [2022-07-21 11:00:02,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937176595] [2022-07-21 11:00:02,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:00:02,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 11:00:02,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:00:02,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 11:00:02,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2022-07-21 11:00:02,805 INFO L87 Difference]: Start difference. First operand 8692 states and 11389 transitions. Second operand has 11 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-21 11:00:08,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:00:08,070 INFO L93 Difference]: Finished difference Result 21057 states and 27660 transitions. [2022-07-21 11:00:08,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 11:00:08,074 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 157 [2022-07-21 11:00:08,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:00:08,116 INFO L225 Difference]: With dead ends: 21057 [2022-07-21 11:00:08,116 INFO L226 Difference]: Without dead ends: 12456 [2022-07-21 11:00:08,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 325 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2022-07-21 11:00:08,139 INFO L413 NwaCegarLoop]: 1141 mSDtfsCounter, 2613 mSDsluCounter, 2189 mSDsCounter, 0 mSdLazyCounter, 4069 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2667 SdHoareTripleChecker+Valid, 3330 SdHoareTripleChecker+Invalid, 4717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 4069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:00:08,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2667 Valid, 3330 Invalid, 4717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [648 Valid, 4069 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-21 11:00:08,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12456 states. [2022-07-21 11:00:09,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12456 to 12420. [2022-07-21 11:00:09,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12420 states, 9413 states have (on average 1.2855625199192606) internal successors, (12101), 9562 states have internal predecessors, (12101), 2026 states have call successors, (2026), 951 states have call predecessors, (2026), 980 states have return successors, (2184), 2011 states have call predecessors, (2184), 2025 states have call successors, (2184) [2022-07-21 11:00:09,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12420 states to 12420 states and 16311 transitions. [2022-07-21 11:00:09,255 INFO L78 Accepts]: Start accepts. Automaton has 12420 states and 16311 transitions. Word has length 157 [2022-07-21 11:00:09,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:00:09,256 INFO L495 AbstractCegarLoop]: Abstraction has 12420 states and 16311 transitions. [2022-07-21 11:00:09,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-21 11:00:09,256 INFO L276 IsEmpty]: Start isEmpty. Operand 12420 states and 16311 transitions. [2022-07-21 11:00:09,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-21 11:00:09,271 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:00:09,271 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:00:09,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 11:00:09,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-21 11:00:09,498 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:00:09,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:00:09,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1351078370, now seen corresponding path program 1 times [2022-07-21 11:00:09,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:00:09,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123814551] [2022-07-21 11:00:09,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:00:09,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:00:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:09,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:09,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:00:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:09,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 11:00:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:09,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 11:00:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:09,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 11:00:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:09,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 11:00:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:09,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 11:00:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:09,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 11:00:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:09,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 11:00:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:09,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:00:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:09,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:09,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:00:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:09,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-21 11:00:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:09,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:00:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:09,841 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 29 proven. 8 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-21 11:00:09,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:00:09,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123814551] [2022-07-21 11:00:09,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123814551] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:00:09,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535817750] [2022-07-21 11:00:09,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:00:09,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:00:09,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:00:09,844 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:00:09,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 11:00:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:10,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:00:10,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:00:10,516 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 11:00:10,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:00:10,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535817750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:00:10,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:00:10,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 12 [2022-07-21 11:00:10,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001477931] [2022-07-21 11:00:10,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:00:10,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:00:10,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:00:10,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:00:10,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-21 11:00:10,518 INFO L87 Difference]: Start difference. First operand 12420 states and 16311 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 11:00:11,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:00:11,731 INFO L93 Difference]: Finished difference Result 30667 states and 40312 transitions. [2022-07-21 11:00:11,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:00:11,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 162 [2022-07-21 11:00:11,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:00:11,778 INFO L225 Difference]: With dead ends: 30667 [2022-07-21 11:00:11,778 INFO L226 Difference]: Without dead ends: 18265 [2022-07-21 11:00:11,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-21 11:00:11,808 INFO L413 NwaCegarLoop]: 1345 mSDtfsCounter, 779 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 2100 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:00:11,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 2100 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 11:00:11,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18265 states. [2022-07-21 11:00:13,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18265 to 17623. [2022-07-21 11:00:13,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17623 states, 13430 states have (on average 1.2981384959046909) internal successors, (17434), 13644 states have internal predecessors, (17434), 2774 states have call successors, (2774), 1369 states have call predecessors, (2774), 1418 states have return successors, (3002), 2768 states have call predecessors, (3002), 2773 states have call successors, (3002) [2022-07-21 11:00:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17623 states to 17623 states and 23210 transitions. [2022-07-21 11:00:13,450 INFO L78 Accepts]: Start accepts. Automaton has 17623 states and 23210 transitions. Word has length 162 [2022-07-21 11:00:13,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:00:13,450 INFO L495 AbstractCegarLoop]: Abstraction has 17623 states and 23210 transitions. [2022-07-21 11:00:13,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-21 11:00:13,451 INFO L276 IsEmpty]: Start isEmpty. Operand 17623 states and 23210 transitions. [2022-07-21 11:00:13,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-21 11:00:13,469 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:00:13,470 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 4, 4, 4, 3, 3, 3, 3, 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] [2022-07-21 11:00:13,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 11:00:13,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-21 11:00:13,684 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:00:13,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:00:13,685 INFO L85 PathProgramCache]: Analyzing trace with hash -2008471459, now seen corresponding path program 1 times [2022-07-21 11:00:13,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:00:13,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007621423] [2022-07-21 11:00:13,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:00:13,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:00:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:13,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:13,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:00:13,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:13,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 11:00:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:13,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 11:00:13,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:13,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 11:00:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:13,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 11:00:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:13,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 11:00:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:13,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 11:00:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:13,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 11:00:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:13,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:00:13,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:13,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:13,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:00:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:13,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-21 11:00:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:13,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-21 11:00:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:13,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:00:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-21 11:00:13,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:00:13,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007621423] [2022-07-21 11:00:13,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007621423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:00:13,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:00:13,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 11:00:13,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232229190] [2022-07-21 11:00:13,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:00:13,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 11:00:13,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:00:13,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 11:00:13,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:00:13,914 INFO L87 Difference]: Start difference. First operand 17623 states and 23210 transitions. Second operand has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (16), 7 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 11:00:22,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:00:22,187 INFO L93 Difference]: Finished difference Result 55965 states and 77611 transitions. [2022-07-21 11:00:22,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 11:00:22,188 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (16), 7 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 182 [2022-07-21 11:00:22,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:00:22,305 INFO L225 Difference]: With dead ends: 55965 [2022-07-21 11:00:22,305 INFO L226 Difference]: Without dead ends: 38360 [2022-07-21 11:00:22,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2022-07-21 11:00:22,339 INFO L413 NwaCegarLoop]: 1570 mSDtfsCounter, 2275 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 3281 mSolverCounterSat, 1576 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2340 SdHoareTripleChecker+Valid, 4107 SdHoareTripleChecker+Invalid, 4857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1576 IncrementalHoareTripleChecker+Valid, 3281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:00:22,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2340 Valid, 4107 Invalid, 4857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1576 Valid, 3281 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-21 11:00:22,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38360 states. [2022-07-21 11:00:24,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38360 to 17681. [2022-07-21 11:00:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17681 states, 13488 states have (on average 1.296856465005931) internal successors, (17492), 13702 states have internal predecessors, (17492), 2774 states have call successors, (2774), 1369 states have call predecessors, (2774), 1418 states have return successors, (3002), 2768 states have call predecessors, (3002), 2773 states have call successors, (3002) [2022-07-21 11:00:24,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17681 states to 17681 states and 23268 transitions. [2022-07-21 11:00:24,172 INFO L78 Accepts]: Start accepts. Automaton has 17681 states and 23268 transitions. Word has length 182 [2022-07-21 11:00:24,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:00:24,173 INFO L495 AbstractCegarLoop]: Abstraction has 17681 states and 23268 transitions. [2022-07-21 11:00:24,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.222222222222221) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (16), 7 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 11:00:24,173 INFO L276 IsEmpty]: Start isEmpty. Operand 17681 states and 23268 transitions. [2022-07-21 11:00:24,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 11:00:24,185 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:00:24,185 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 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] [2022-07-21 11:00:24,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 11:00:24,185 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:00:24,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:00:24,186 INFO L85 PathProgramCache]: Analyzing trace with hash -933918955, now seen corresponding path program 1 times [2022-07-21 11:00:24,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:00:24,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790661437] [2022-07-21 11:00:24,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:00:24,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:00:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:24,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:24,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:24,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:00:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:24,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 11:00:24,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:24,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 11:00:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:24,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 11:00:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:24,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:00:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:24,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 11:00:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:24,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:00:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:24,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:24,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:00:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:24,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:00:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:24,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:00:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:24,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 11:00:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:24,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 11:00:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:24,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 11:00:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:24,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 11:00:24,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:24,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:00:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:24,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 11:00:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:24,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-21 11:00:24,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-21 11:00:24,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:00:24,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790661437] [2022-07-21 11:00:24,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790661437] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:00:24,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511624773] [2022-07-21 11:00:24,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:00:24,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:00:24,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:00:24,471 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:00:24,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 11:00:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:24,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 1788 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-21 11:00:24,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:00:25,014 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-21 11:00:25,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:00:25,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511624773] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:00:25,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:00:25,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-07-21 11:00:25,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538186605] [2022-07-21 11:00:25,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:00:25,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:00:25,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:00:25,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:00:25,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-21 11:00:25,016 INFO L87 Difference]: Start difference. First operand 17681 states and 23268 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 11:00:27,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:00:27,033 INFO L93 Difference]: Finished difference Result 40200 states and 53785 transitions. [2022-07-21 11:00:27,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:00:27,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 190 [2022-07-21 11:00:27,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:00:27,080 INFO L225 Difference]: With dead ends: 40200 [2022-07-21 11:00:27,080 INFO L226 Difference]: Without dead ends: 22781 [2022-07-21 11:00:27,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-21 11:00:27,101 INFO L413 NwaCegarLoop]: 1192 mSDtfsCounter, 222 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:00:27,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 2113 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 11:00:27,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22781 states. [2022-07-21 11:00:28,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22781 to 17711. [2022-07-21 11:00:28,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17711 states, 13518 states have (on average 1.2961976623760911) internal successors, (17522), 13732 states have internal predecessors, (17522), 2774 states have call successors, (2774), 1369 states have call predecessors, (2774), 1418 states have return successors, (3002), 2768 states have call predecessors, (3002), 2773 states have call successors, (3002) [2022-07-21 11:00:28,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17711 states to 17711 states and 23298 transitions. [2022-07-21 11:00:28,553 INFO L78 Accepts]: Start accepts. Automaton has 17711 states and 23298 transitions. Word has length 190 [2022-07-21 11:00:28,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:00:28,554 INFO L495 AbstractCegarLoop]: Abstraction has 17711 states and 23298 transitions. [2022-07-21 11:00:28,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-21 11:00:28,554 INFO L276 IsEmpty]: Start isEmpty. Operand 17711 states and 23298 transitions. [2022-07-21 11:00:28,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-07-21 11:00:28,565 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:00:28,566 INFO L195 NwaCegarLoop]: trace histogram [7, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:00:28,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 11:00:28,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:00:28,780 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:00:28,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:00:28,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1098850765, now seen corresponding path program 1 times [2022-07-21 11:00:28,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:00:28,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735597327] [2022-07-21 11:00:28,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:00:28,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:00:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:28,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:28,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:28,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:00:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:28,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 11:00:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:28,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 11:00:28,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:28,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 11:00:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:28,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 11:00:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:28,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 11:00:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:28,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 11:00:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:28,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 11:00:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:28,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:00:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:28,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:28,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:28,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:00:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:28,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-21 11:00:28,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:28,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-21 11:00:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:28,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 11:00:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:28,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:00:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:28,992 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-21 11:00:28,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:00:28,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735597327] [2022-07-21 11:00:28,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735597327] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:00:28,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:00:28,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 11:00:28,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309751025] [2022-07-21 11:00:28,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:00:28,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 11:00:28,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:00:28,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 11:00:28,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:00:28,996 INFO L87 Difference]: Start difference. First operand 17711 states and 23298 transitions. Second operand has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (17), 7 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 11:00:38,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:00:38,046 INFO L93 Difference]: Finished difference Result 56188 states and 77834 transitions. [2022-07-21 11:00:38,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-21 11:00:38,047 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (17), 7 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 190 [2022-07-21 11:00:38,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:00:38,147 INFO L225 Difference]: With dead ends: 56188 [2022-07-21 11:00:38,147 INFO L226 Difference]: Without dead ends: 38495 [2022-07-21 11:00:38,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2022-07-21 11:00:38,179 INFO L413 NwaCegarLoop]: 1566 mSDtfsCounter, 2297 mSDsluCounter, 2520 mSDsCounter, 0 mSdLazyCounter, 3227 mSolverCounterSat, 1605 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2362 SdHoareTripleChecker+Valid, 4086 SdHoareTripleChecker+Invalid, 4832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1605 IncrementalHoareTripleChecker+Valid, 3227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-07-21 11:00:38,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2362 Valid, 4086 Invalid, 4832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1605 Valid, 3227 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-07-21 11:00:38,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38495 states. [2022-07-21 11:00:39,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38495 to 17711. [2022-07-21 11:00:39,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17711 states, 13518 states have (on average 1.2961976623760911) internal successors, (17522), 13732 states have internal predecessors, (17522), 2774 states have call successors, (2774), 1369 states have call predecessors, (2774), 1418 states have return successors, (3002), 2768 states have call predecessors, (3002), 2773 states have call successors, (3002) [2022-07-21 11:00:39,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17711 states to 17711 states and 23298 transitions. [2022-07-21 11:00:39,984 INFO L78 Accepts]: Start accepts. Automaton has 17711 states and 23298 transitions. Word has length 190 [2022-07-21 11:00:39,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:00:39,985 INFO L495 AbstractCegarLoop]: Abstraction has 17711 states and 23298 transitions. [2022-07-21 11:00:39,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.555555555555555) internal successors, (122), 4 states have internal predecessors, (122), 2 states have call successors, (17), 7 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 11:00:39,985 INFO L276 IsEmpty]: Start isEmpty. Operand 17711 states and 23298 transitions. [2022-07-21 11:00:39,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-21 11:00:39,991 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:00:39,991 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 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] [2022-07-21 11:00:39,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 11:00:39,992 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:00:39,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:00:39,992 INFO L85 PathProgramCache]: Analyzing trace with hash 2091813840, now seen corresponding path program 1 times [2022-07-21 11:00:39,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:00:39,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473270332] [2022-07-21 11:00:39,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:00:39,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:00:40,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:40,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:00:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 11:00:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 11:00:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 11:00:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:00:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 11:00:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:00:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:00:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:00:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:00:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 11:00:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 11:00:40,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-21 11:00:40,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 11:00:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:00:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 11:00:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-21 11:00:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-21 11:00:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-21 11:00:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-21 11:00:40,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:00:40,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473270332] [2022-07-21 11:00:40,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473270332] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:00:40,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:00:40,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 11:00:40,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948326641] [2022-07-21 11:00:40,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:00:40,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 11:00:40,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:00:40,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 11:00:40,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-21 11:00:40,394 INFO L87 Difference]: Start difference. First operand 17711 states and 23298 transitions. Second operand has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (22), 8 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:00:52,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:00:52,333 INFO L93 Difference]: Finished difference Result 44530 states and 61830 transitions. [2022-07-21 11:00:52,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 11:00:52,334 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (22), 8 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) Word has length 199 [2022-07-21 11:00:52,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:00:52,431 INFO L225 Difference]: With dead ends: 44530 [2022-07-21 11:00:52,431 INFO L226 Difference]: Without dead ends: 27081 [2022-07-21 11:00:52,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2022-07-21 11:00:52,477 INFO L413 NwaCegarLoop]: 1130 mSDtfsCounter, 1626 mSDsluCounter, 4624 mSDsCounter, 0 mSdLazyCounter, 4950 mSolverCounterSat, 1004 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 5754 SdHoareTripleChecker+Invalid, 5954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1004 IncrementalHoareTripleChecker+Valid, 4950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-07-21 11:00:52,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1702 Valid, 5754 Invalid, 5954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1004 Valid, 4950 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-07-21 11:00:52,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27081 states. [2022-07-21 11:00:54,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27081 to 17786. [2022-07-21 11:00:54,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17786 states, 13578 states have (on average 1.2948887906908233) internal successors, (17582), 13777 states have internal predecessors, (17582), 2774 states have call successors, (2774), 1369 states have call predecessors, (2774), 1433 states have return successors, (3017), 2798 states have call predecessors, (3017), 2773 states have call successors, (3017) [2022-07-21 11:00:54,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17786 states to 17786 states and 23373 transitions. [2022-07-21 11:00:54,431 INFO L78 Accepts]: Start accepts. Automaton has 17786 states and 23373 transitions. Word has length 199 [2022-07-21 11:00:54,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:00:54,432 INFO L495 AbstractCegarLoop]: Abstraction has 17786 states and 23373 transitions. [2022-07-21 11:00:54,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.307692307692308) internal successors, (134), 5 states have internal predecessors, (134), 2 states have call successors, (22), 8 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:00:54,432 INFO L276 IsEmpty]: Start isEmpty. Operand 17786 states and 23373 transitions. [2022-07-21 11:00:54,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-21 11:00:54,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:00:54,440 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 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] [2022-07-21 11:00:54,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 11:00:54,440 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:00:54,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:00:54,441 INFO L85 PathProgramCache]: Analyzing trace with hash -307791908, now seen corresponding path program 1 times [2022-07-21 11:00:54,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:00:54,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549240209] [2022-07-21 11:00:54,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:00:54,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:00:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:54,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:54,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:00:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:54,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 11:00:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:54,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 11:00:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:54,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 11:00:54,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:54,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:00:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:54,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 11:00:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:54,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:00:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:54,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:54,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:54,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:00:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:54,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:00:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:54,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:00:54,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:54,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:00:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:54,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 11:00:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:55,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 11:00:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:55,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 11:00:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:55,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-21 11:00:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:55,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:00:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:55,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-21 11:00:55,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:55,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 11:00:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:55,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-21 11:00:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:55,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-21 11:00:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:55,199 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-21 11:00:55,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:00:55,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549240209] [2022-07-21 11:00:55,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549240209] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:00:55,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708357028] [2022-07-21 11:00:55,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:00:55,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:00:55,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:00:55,201 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:00:55,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 11:00:56,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:00:56,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 1857 conjuncts, 86 conjunts are in the unsatisfiable core [2022-07-21 11:00:56,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:00:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 39 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-21 11:00:57,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:00:57,839 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-21 11:00:57,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708357028] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-21 11:00:57,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-21 11:00:57,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [21, 16] total 31 [2022-07-21 11:00:57,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499639173] [2022-07-21 11:00:57,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:00:57,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 11:00:57,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:00:57,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 11:00:57,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=823, Unknown=0, NotChecked=0, Total=930 [2022-07-21 11:00:57,842 INFO L87 Difference]: Start difference. First operand 17786 states and 23373 transitions. Second operand has 11 states, 10 states have (on average 13.2) internal successors, (132), 9 states have internal predecessors, (132), 5 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-21 11:01:04,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:04,021 INFO L93 Difference]: Finished difference Result 47194 states and 62076 transitions. [2022-07-21 11:01:04,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 11:01:04,023 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 13.2) internal successors, (132), 9 states have internal predecessors, (132), 5 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 205 [2022-07-21 11:01:04,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:04,107 INFO L225 Difference]: With dead ends: 47194 [2022-07-21 11:01:04,107 INFO L226 Difference]: Without dead ends: 29068 [2022-07-21 11:01:04,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 435 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=136, Invalid=1054, Unknown=0, NotChecked=0, Total=1190 [2022-07-21 11:01:04,147 INFO L413 NwaCegarLoop]: 1195 mSDtfsCounter, 1433 mSDsluCounter, 2243 mSDsCounter, 0 mSdLazyCounter, 4022 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1487 SdHoareTripleChecker+Valid, 3438 SdHoareTripleChecker+Invalid, 4176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 4022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:04,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1487 Valid, 3438 Invalid, 4176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 4022 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-21 11:01:04,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29068 states. [2022-07-21 11:01:06,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29068 to 17771. [2022-07-21 11:01:06,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17771 states, 13563 states have (on average 1.2944776229447763) internal successors, (17557), 13767 states have internal predecessors, (17557), 2774 states have call successors, (2774), 1369 states have call predecessors, (2774), 1433 states have return successors, (3017), 2793 states have call predecessors, (3017), 2773 states have call successors, (3017) [2022-07-21 11:01:06,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17771 states to 17771 states and 23348 transitions. [2022-07-21 11:01:06,106 INFO L78 Accepts]: Start accepts. Automaton has 17771 states and 23348 transitions. Word has length 205 [2022-07-21 11:01:06,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:06,107 INFO L495 AbstractCegarLoop]: Abstraction has 17771 states and 23348 transitions. [2022-07-21 11:01:06,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 13.2) internal successors, (132), 9 states have internal predecessors, (132), 5 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2022-07-21 11:01:06,107 INFO L276 IsEmpty]: Start isEmpty. Operand 17771 states and 23348 transitions. [2022-07-21 11:01:06,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-21 11:01:06,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:06,117 INFO L195 NwaCegarLoop]: trace histogram [7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:01:06,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 11:01:06,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-21 11:01:06,320 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:06,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:06,320 INFO L85 PathProgramCache]: Analyzing trace with hash 86993502, now seen corresponding path program 1 times [2022-07-21 11:01:06,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:01:06,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276355931] [2022-07-21 11:01:06,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:06,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:01:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:01:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 11:01:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 11:01:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 11:01:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 11:01:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 11:01:06,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 11:01:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 11:01:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:01:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-21 11:01:06,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-21 11:01:06,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-21 11:01:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 11:01:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-21 11:01:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 11:01:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-21 11:01:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-21 11:01:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-21 11:01:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:01:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:06,620 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-07-21 11:01:06,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:01:06,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276355931] [2022-07-21 11:01:06,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276355931] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:01:06,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:01:06,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 11:01:06,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609517312] [2022-07-21 11:01:06,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:01:06,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 11:01:06,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:01:06,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 11:01:06,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-21 11:01:06,623 INFO L87 Difference]: Start difference. First operand 17771 states and 23348 transitions. Second operand has 10 states, 10 states have (on average 14.1) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (23), 9 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 11:01:18,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:18,835 INFO L93 Difference]: Finished difference Result 41942 states and 58088 transitions. [2022-07-21 11:01:18,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 11:01:18,835 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (23), 9 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 232 [2022-07-21 11:01:18,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:18,906 INFO L225 Difference]: With dead ends: 41942 [2022-07-21 11:01:18,906 INFO L226 Difference]: Without dead ends: 24189 [2022-07-21 11:01:18,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-07-21 11:01:18,941 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 1199 mSDsluCounter, 2295 mSDsCounter, 0 mSdLazyCounter, 2721 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1247 SdHoareTripleChecker+Valid, 3121 SdHoareTripleChecker+Invalid, 3499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 2721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:18,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1247 Valid, 3121 Invalid, 3499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 2721 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-07-21 11:01:18,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24189 states. [2022-07-21 11:01:20,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24189 to 17800. [2022-07-21 11:01:20,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17800 states, 13592 states have (on average 1.2938493231312538) internal successors, (17586), 13796 states have internal predecessors, (17586), 2774 states have call successors, (2774), 1369 states have call predecessors, (2774), 1433 states have return successors, (3017), 2793 states have call predecessors, (3017), 2773 states have call successors, (3017) [2022-07-21 11:01:20,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17800 states to 17800 states and 23377 transitions. [2022-07-21 11:01:20,977 INFO L78 Accepts]: Start accepts. Automaton has 17800 states and 23377 transitions. Word has length 232 [2022-07-21 11:01:20,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:20,977 INFO L495 AbstractCegarLoop]: Abstraction has 17800 states and 23377 transitions. [2022-07-21 11:01:20,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.1) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (23), 9 states have call predecessors, (23), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 11:01:20,978 INFO L276 IsEmpty]: Start isEmpty. Operand 17800 states and 23377 transitions. [2022-07-21 11:01:20,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-21 11:01:20,988 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:20,988 INFO L195 NwaCegarLoop]: trace histogram [7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:01:20,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 11:01:20,989 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:20,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:20,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1451032486, now seen corresponding path program 1 times [2022-07-21 11:01:20,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:01:20,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746995671] [2022-07-21 11:01:20,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:20,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:01:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:01:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 11:01:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 11:01:21,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 11:01:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 11:01:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 11:01:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 11:01:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 11:01:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:01:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-21 11:01:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-21 11:01:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-21 11:01:21,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 11:01:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-21 11:01:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 11:01:21,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-21 11:01:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-21 11:01:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-21 11:01:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:01:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:21,309 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-07-21 11:01:21,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:01:21,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746995671] [2022-07-21 11:01:21,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746995671] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:01:21,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871964137] [2022-07-21 11:01:21,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:21,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:01:21,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:01:21,311 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:01:21,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 11:01:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:22,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 2413 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 11:01:22,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:01:22,227 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-21 11:01:22,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:01:22,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871964137] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:01:22,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:01:22,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 13 [2022-07-21 11:01:22,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153491406] [2022-07-21 11:01:22,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:01:22,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 11:01:22,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:01:22,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 11:01:22,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-21 11:01:22,229 INFO L87 Difference]: Start difference. First operand 17800 states and 23377 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 4 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-21 11:01:24,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:24,098 INFO L93 Difference]: Finished difference Result 33163 states and 43525 transitions. [2022-07-21 11:01:24,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 11:01:24,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 4 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 234 [2022-07-21 11:01:24,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:24,145 INFO L225 Difference]: With dead ends: 33163 [2022-07-21 11:01:24,146 INFO L226 Difference]: Without dead ends: 15445 [2022-07-21 11:01:24,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-07-21 11:01:24,175 INFO L413 NwaCegarLoop]: 1036 mSDtfsCounter, 1016 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:24,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 1251 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 11:01:24,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15445 states. [2022-07-21 11:01:25,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15445 to 15416. [2022-07-21 11:01:25,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15416 states, 11880 states have (on average 1.293939393939394) internal successors, (15372), 12043 states have internal predecessors, (15372), 2311 states have call successors, (2311), 1173 states have call predecessors, (2311), 1224 states have return successors, (2498), 2326 states have call predecessors, (2498), 2310 states have call successors, (2498) [2022-07-21 11:01:25,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15416 states to 15416 states and 20181 transitions. [2022-07-21 11:01:25,833 INFO L78 Accepts]: Start accepts. Automaton has 15416 states and 20181 transitions. Word has length 234 [2022-07-21 11:01:25,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:25,833 INFO L495 AbstractCegarLoop]: Abstraction has 15416 states and 20181 transitions. [2022-07-21 11:01:25,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 4 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-07-21 11:01:25,834 INFO L276 IsEmpty]: Start isEmpty. Operand 15416 states and 20181 transitions. [2022-07-21 11:01:25,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-07-21 11:01:25,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:25,850 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:01:25,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 11:01:26,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-21 11:01:26,064 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:26,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:26,064 INFO L85 PathProgramCache]: Analyzing trace with hash 763208669, now seen corresponding path program 1 times [2022-07-21 11:01:26,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:01:26,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039761311] [2022-07-21 11:01:26,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:26,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:01:26,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:01:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 11:01:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 11:01:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 11:01:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 11:01:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 11:01:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 11:01:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 11:01:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:26,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:01:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-21 11:01:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 11:01:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:01:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 11:01:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 11:01:26,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 11:01:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:01:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 11:01:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-21 11:01:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 11:01:26,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:01:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-21 11:01:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-21 11:01:26,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:26,457 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-07-21 11:01:26,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:01:26,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039761311] [2022-07-21 11:01:26,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039761311] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:01:26,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:01:26,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 11:01:26,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774840451] [2022-07-21 11:01:26,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:01:26,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 11:01:26,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:01:26,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 11:01:26,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-21 11:01:26,461 INFO L87 Difference]: Start difference. First operand 15416 states and 20181 transitions. Second operand has 13 states, 12 states have (on average 12.75) internal successors, (153), 6 states have internal predecessors, (153), 3 states have call successors, (28), 7 states have call predecessors, (28), 3 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-21 11:01:37,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:37,683 INFO L93 Difference]: Finished difference Result 34087 states and 45814 transitions. [2022-07-21 11:01:37,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 11:01:37,684 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 12.75) internal successors, (153), 6 states have internal predecessors, (153), 3 states have call successors, (28), 7 states have call predecessors, (28), 3 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 249 [2022-07-21 11:01:37,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:37,720 INFO L225 Difference]: With dead ends: 34087 [2022-07-21 11:01:37,720 INFO L226 Difference]: Without dead ends: 18934 [2022-07-21 11:01:37,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-07-21 11:01:37,739 INFO L413 NwaCegarLoop]: 827 mSDtfsCounter, 832 mSDsluCounter, 4707 mSDsCounter, 0 mSdLazyCounter, 3593 mSolverCounterSat, 691 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 5534 SdHoareTripleChecker+Invalid, 4284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 691 IncrementalHoareTripleChecker+Valid, 3593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:37,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 5534 Invalid, 4284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [691 Valid, 3593 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-07-21 11:01:37,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18934 states. [2022-07-21 11:01:39,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18934 to 15452. [2022-07-21 11:01:39,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15452 states, 11904 states have (on average 1.2933467741935485) internal successors, (15396), 12067 states have internal predecessors, (15396), 2323 states have call successors, (2323), 1173 states have call predecessors, (2323), 1224 states have return successors, (2510), 2338 states have call predecessors, (2510), 2322 states have call successors, (2510) [2022-07-21 11:01:39,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15452 states to 15452 states and 20229 transitions. [2022-07-21 11:01:39,281 INFO L78 Accepts]: Start accepts. Automaton has 15452 states and 20229 transitions. Word has length 249 [2022-07-21 11:01:39,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:39,281 INFO L495 AbstractCegarLoop]: Abstraction has 15452 states and 20229 transitions. [2022-07-21 11:01:39,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 12.75) internal successors, (153), 6 states have internal predecessors, (153), 3 states have call successors, (28), 7 states have call predecessors, (28), 3 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-21 11:01:39,282 INFO L276 IsEmpty]: Start isEmpty. Operand 15452 states and 20229 transitions. [2022-07-21 11:01:39,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-07-21 11:01:39,294 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:39,295 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:01:39,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 11:01:39,295 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:39,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:39,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2037672168, now seen corresponding path program 1 times [2022-07-21 11:01:39,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:01:39,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323703622] [2022-07-21 11:01:39,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:39,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:01:39,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:01:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 11:01:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 11:01:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 11:01:39,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 11:01:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 11:01:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 11:01:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 11:01:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:01:39,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-21 11:01:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 11:01:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:01:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 11:01:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 11:01:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 11:01:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:01:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:01:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-21 11:01:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 11:01:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:01:39,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-21 11:01:39,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-21 11:01:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:39,598 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-21 11:01:39,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:01:39,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323703622] [2022-07-21 11:01:39,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323703622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:01:39,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:01:39,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 11:01:39,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244183969] [2022-07-21 11:01:39,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:01:39,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 11:01:39,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:01:39,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 11:01:39,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:01:39,601 INFO L87 Difference]: Start difference. First operand 15452 states and 20229 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (28), 7 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 11:01:47,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:47,429 INFO L93 Difference]: Finished difference Result 34346 states and 46449 transitions. [2022-07-21 11:01:47,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:01:47,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (28), 7 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 250 [2022-07-21 11:01:47,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:47,497 INFO L225 Difference]: With dead ends: 34346 [2022-07-21 11:01:47,497 INFO L226 Difference]: Without dead ends: 18912 [2022-07-21 11:01:47,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-21 11:01:47,531 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 641 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 1638 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 2846 SdHoareTripleChecker+Invalid, 2145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 1638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:47,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 2846 Invalid, 2145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 1638 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-07-21 11:01:47,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18912 states. [2022-07-21 11:01:49,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18912 to 15483. [2022-07-21 11:01:49,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15483 states, 11935 states have (on average 1.2925848345203184) internal successors, (15427), 12098 states have internal predecessors, (15427), 2323 states have call successors, (2323), 1173 states have call predecessors, (2323), 1224 states have return successors, (2510), 2338 states have call predecessors, (2510), 2322 states have call successors, (2510) [2022-07-21 11:01:49,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15483 states to 15483 states and 20260 transitions. [2022-07-21 11:01:49,119 INFO L78 Accepts]: Start accepts. Automaton has 15483 states and 20260 transitions. Word has length 250 [2022-07-21 11:01:49,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:49,120 INFO L495 AbstractCegarLoop]: Abstraction has 15483 states and 20260 transitions. [2022-07-21 11:01:49,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 3 states have internal predecessors, (152), 2 states have call successors, (28), 7 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-21 11:01:49,120 INFO L276 IsEmpty]: Start isEmpty. Operand 15483 states and 20260 transitions. [2022-07-21 11:01:49,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-07-21 11:01:49,131 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:49,131 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:01:49,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 11:01:49,132 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:49,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:49,132 INFO L85 PathProgramCache]: Analyzing trace with hash 738018164, now seen corresponding path program 1 times [2022-07-21 11:01:49,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:01:49,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627258138] [2022-07-21 11:01:49,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:49,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:01:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:49,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:01:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 11:01:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 11:01:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 11:01:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 11:01:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 11:01:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 11:01:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 11:01:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:01:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-21 11:01:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 11:01:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:01:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 11:01:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 11:01:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 11:01:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:49,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:01:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:01:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-21 11:01:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 11:01:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:01:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-21 11:01:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-21 11:01:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:49,408 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-21 11:01:49,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:01:49,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627258138] [2022-07-21 11:01:49,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627258138] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:01:49,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937668084] [2022-07-21 11:01:49,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:49,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:01:49,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:01:49,412 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:01:49,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 11:01:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:50,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 2338 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 11:01:50,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:01:50,097 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-21 11:01:50,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:01:50,206 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-21 11:01:50,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937668084] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 11:01:50,207 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 11:01:50,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 11 [2022-07-21 11:01:50,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438815196] [2022-07-21 11:01:50,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 11:01:50,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 11:01:50,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:01:50,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 11:01:50,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-07-21 11:01:50,209 INFO L87 Difference]: Start difference. First operand 15483 states and 20260 transitions. Second operand has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 6 states have internal predecessors, (169), 2 states have call successors, (40), 7 states have call predecessors, (40), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 11:01:56,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:01:56,458 INFO L93 Difference]: Finished difference Result 34532 states and 46697 transitions. [2022-07-21 11:01:56,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 11:01:56,458 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 6 states have internal predecessors, (169), 2 states have call successors, (40), 7 states have call predecessors, (40), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 252 [2022-07-21 11:01:56,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:01:56,508 INFO L225 Difference]: With dead ends: 34532 [2022-07-21 11:01:56,508 INFO L226 Difference]: Without dead ends: 19067 [2022-07-21 11:01:56,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 553 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-07-21 11:01:56,535 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 1030 mSDsluCounter, 1892 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 859 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 2723 SdHoareTripleChecker+Invalid, 2259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 859 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:01:56,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 2723 Invalid, 2259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [859 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-21 11:01:56,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19067 states. [2022-07-21 11:01:58,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19067 to 15669. [2022-07-21 11:01:58,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15669 states, 12121 states have (on average 1.288095041663229) internal successors, (15613), 12284 states have internal predecessors, (15613), 2323 states have call successors, (2323), 1173 states have call predecessors, (2323), 1224 states have return successors, (2510), 2338 states have call predecessors, (2510), 2322 states have call successors, (2510) [2022-07-21 11:01:58,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15669 states to 15669 states and 20446 transitions. [2022-07-21 11:01:58,312 INFO L78 Accepts]: Start accepts. Automaton has 15669 states and 20446 transitions. Word has length 252 [2022-07-21 11:01:58,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:01:58,312 INFO L495 AbstractCegarLoop]: Abstraction has 15669 states and 20446 transitions. [2022-07-21 11:01:58,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.363636363636363) internal successors, (169), 6 states have internal predecessors, (169), 2 states have call successors, (40), 7 states have call predecessors, (40), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 11:01:58,312 INFO L276 IsEmpty]: Start isEmpty. Operand 15669 states and 20446 transitions. [2022-07-21 11:01:58,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-07-21 11:01:58,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:01:58,324 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:01:58,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 11:01:58,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-21 11:01:58,540 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:01:58,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:01:58,540 INFO L85 PathProgramCache]: Analyzing trace with hash -54567288, now seen corresponding path program 2 times [2022-07-21 11:01:58,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:01:58,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330789797] [2022-07-21 11:01:58,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:01:58,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:01:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:01:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 11:01:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 11:01:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 11:01:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 11:01:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 11:01:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-21 11:01:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 11:01:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:01:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:01:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-21 11:01:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 11:01:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:01:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 11:01:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 11:01:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 11:01:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-21 11:01:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:01:58,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-21 11:01:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:01:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 11:01:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:01:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-21 11:01:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-21 11:01:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:01:58,927 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 50 proven. 16 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-21 11:01:58,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:01:58,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330789797] [2022-07-21 11:01:58,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330789797] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:01:58,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073658352] [2022-07-21 11:01:58,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 11:01:58,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:01:58,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:01:58,930 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:01:58,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 11:01:59,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 11:01:59,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 11:01:59,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 2383 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 11:01:59,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:02:00,013 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 50 proven. 16 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-21 11:02:00,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:02:00,176 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 50 proven. 16 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-21 11:02:00,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073658352] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 11:02:00,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 11:02:00,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 17 [2022-07-21 11:02:00,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833252972] [2022-07-21 11:02:00,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 11:02:00,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 11:02:00,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:02:00,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 11:02:00,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-07-21 11:02:00,179 INFO L87 Difference]: Start difference. First operand 15669 states and 20446 transitions. Second operand has 17 states, 17 states have (on average 10.647058823529411) internal successors, (181), 12 states have internal predecessors, (181), 2 states have call successors, (40), 7 states have call predecessors, (40), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 11:02:06,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:02:06,973 INFO L93 Difference]: Finished difference Result 35090 states and 47348 transitions. [2022-07-21 11:02:06,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 11:02:06,974 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.647058823529411) internal successors, (181), 12 states have internal predecessors, (181), 2 states have call successors, (40), 7 states have call predecessors, (40), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 258 [2022-07-21 11:02:06,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:02:07,031 INFO L225 Difference]: With dead ends: 35090 [2022-07-21 11:02:07,031 INFO L226 Difference]: Without dead ends: 19439 [2022-07-21 11:02:07,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 562 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=228, Invalid=528, Unknown=0, NotChecked=0, Total=756 [2022-07-21 11:02:07,063 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 710 mSDsluCounter, 2990 mSDsCounter, 0 mSdLazyCounter, 2244 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 3824 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 2244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-21 11:02:07,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 3824 Invalid, 2807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [563 Valid, 2244 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-21 11:02:07,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19439 states. [2022-07-21 11:02:08,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19439 to 16041. [2022-07-21 11:02:08,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16041 states, 12493 states have (on average 1.2795165292563835) internal successors, (15985), 12656 states have internal predecessors, (15985), 2323 states have call successors, (2323), 1173 states have call predecessors, (2323), 1224 states have return successors, (2510), 2338 states have call predecessors, (2510), 2322 states have call successors, (2510) [2022-07-21 11:02:08,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16041 states to 16041 states and 20818 transitions. [2022-07-21 11:02:08,920 INFO L78 Accepts]: Start accepts. Automaton has 16041 states and 20818 transitions. Word has length 258 [2022-07-21 11:02:08,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:02:08,920 INFO L495 AbstractCegarLoop]: Abstraction has 16041 states and 20818 transitions. [2022-07-21 11:02:08,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.647058823529411) internal successors, (181), 12 states have internal predecessors, (181), 2 states have call successors, (40), 7 states have call predecessors, (40), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-21 11:02:08,921 INFO L276 IsEmpty]: Start isEmpty. Operand 16041 states and 20818 transitions. [2022-07-21 11:02:08,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-07-21 11:02:08,933 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:02:08,934 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:02:08,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 11:02:09,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-21 11:02:09,135 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:09,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:09,135 INFO L85 PathProgramCache]: Analyzing trace with hash 422115627, now seen corresponding path program 1 times [2022-07-21 11:02:09,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:02:09,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795579358] [2022-07-21 11:02:09,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:09,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:02:09,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:09,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:02:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 11:02:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 11:02:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 11:02:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:02:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 11:02:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:02:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:02:09,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:09,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-21 11:02:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 11:02:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 11:02:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-21 11:02:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-21 11:02:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 11:02:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 11:02:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-21 11:02:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:02:09,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 11:02:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:02:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 11:02:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 11:02:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-07-21 11:02:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:09,547 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-21 11:02:09,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:02:09,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795579358] [2022-07-21 11:02:09,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795579358] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:02:09,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325064384] [2022-07-21 11:02:09,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:09,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:02:09,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:02:09,552 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:02:09,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 11:02:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:10,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 2460 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 11:02:10,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:02:10,362 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-21 11:02:10,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:02:10,529 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-21 11:02:10,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325064384] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 11:02:10,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 11:02:10,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 16 [2022-07-21 11:02:10,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023258904] [2022-07-21 11:02:10,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 11:02:10,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 11:02:10,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:02:10,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 11:02:10,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-21 11:02:10,532 INFO L87 Difference]: Start difference. First operand 16041 states and 20818 transitions. Second operand has 16 states, 16 states have (on average 15.625) internal successors, (250), 7 states have internal predecessors, (250), 5 states have call successors, (65), 11 states have call predecessors, (65), 2 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) [2022-07-21 11:02:28,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:02:28,287 INFO L93 Difference]: Finished difference Result 57274 states and 82529 transitions. [2022-07-21 11:02:28,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 11:02:28,288 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.625) internal successors, (250), 7 states have internal predecessors, (250), 5 states have call successors, (65), 11 states have call predecessors, (65), 2 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) Word has length 264 [2022-07-21 11:02:28,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:02:28,389 INFO L225 Difference]: With dead ends: 57274 [2022-07-21 11:02:28,390 INFO L226 Difference]: Without dead ends: 41515 [2022-07-21 11:02:28,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2022-07-21 11:02:28,421 INFO L413 NwaCegarLoop]: 1292 mSDtfsCounter, 2792 mSDsluCounter, 4264 mSDsCounter, 0 mSdLazyCounter, 6287 mSolverCounterSat, 1777 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3099 SdHoareTripleChecker+Valid, 5556 SdHoareTripleChecker+Invalid, 8064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1777 IncrementalHoareTripleChecker+Valid, 6287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-07-21 11:02:28,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3099 Valid, 5556 Invalid, 8064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1777 Valid, 6287 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2022-07-21 11:02:28,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41515 states. [2022-07-21 11:02:30,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41515 to 16929. [2022-07-21 11:02:30,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16929 states, 13081 states have (on average 1.272762021252198) internal successors, (16649), 13240 states have internal predecessors, (16649), 2623 states have call successors, (2623), 1173 states have call predecessors, (2623), 1224 states have return successors, (2902), 2642 states have call predecessors, (2902), 2622 states have call successors, (2902) [2022-07-21 11:02:30,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16929 states to 16929 states and 22174 transitions. [2022-07-21 11:02:30,798 INFO L78 Accepts]: Start accepts. Automaton has 16929 states and 22174 transitions. Word has length 264 [2022-07-21 11:02:30,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:02:30,798 INFO L495 AbstractCegarLoop]: Abstraction has 16929 states and 22174 transitions. [2022-07-21 11:02:30,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.625) internal successors, (250), 7 states have internal predecessors, (250), 5 states have call successors, (65), 11 states have call predecessors, (65), 2 states have return successors, (52), 5 states have call predecessors, (52), 5 states have call successors, (52) [2022-07-21 11:02:30,798 INFO L276 IsEmpty]: Start isEmpty. Operand 16929 states and 22174 transitions. [2022-07-21 11:02:30,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2022-07-21 11:02:30,810 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:02:30,811 INFO L195 NwaCegarLoop]: trace histogram [9, 7, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2022-07-21 11:02:30,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-21 11:02:31,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-21 11:02:31,012 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:31,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:31,012 INFO L85 PathProgramCache]: Analyzing trace with hash -479344813, now seen corresponding path program 1 times [2022-07-21 11:02:31,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:02:31,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030760926] [2022-07-21 11:02:31,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:31,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:02:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:31,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:02:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 11:02:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 11:02:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-21 11:02:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 11:02:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 11:02:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-21 11:02:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 11:02:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-21 11:02:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 11:02:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 11:02:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 11:02:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 11:02:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-21 11:02:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 11:02:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-21 11:02:31,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-21 11:02:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-21 11:02:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 11:02:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:31,261 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 74 proven. 1 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-21 11:02:31,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:02:31,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030760926] [2022-07-21 11:02:31,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030760926] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:02:31,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479965470] [2022-07-21 11:02:31,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:31,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:02:31,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:02:31,263 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:02:31,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 11:02:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:32,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 2489 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 11:02:32,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:02:32,092 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-21 11:02:32,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 11:02:32,174 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 74 proven. 1 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-21 11:02:32,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479965470] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 11:02:32,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 11:02:32,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 14 [2022-07-21 11:02:32,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774211761] [2022-07-21 11:02:32,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 11:02:32,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 11:02:32,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:02:32,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 11:02:32,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-07-21 11:02:32,176 INFO L87 Difference]: Start difference. First operand 16929 states and 22174 transitions. Second operand has 14 states, 14 states have (on average 14.428571428571429) internal successors, (202), 7 states have internal predecessors, (202), 2 states have call successors, (49), 9 states have call predecessors, (49), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34)