./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.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 2c6aa6e54aa03d80dc4005d195dc80cde5e772aed59b94df03248a4abb3fc0ec --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 01:32:02,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 01:32:02,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 01:32:02,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 01:32:02,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 01:32:02,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 01:32:02,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 01:32:02,338 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 01:32:02,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 01:32:02,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 01:32:02,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 01:32:02,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 01:32:02,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 01:32:02,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 01:32:02,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 01:32:02,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 01:32:02,356 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 01:32:02,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 01:32:02,358 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 01:32:02,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 01:32:02,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 01:32:02,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 01:32:02,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 01:32:02,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 01:32:02,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 01:32:02,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 01:32:02,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 01:32:02,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 01:32:02,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 01:32:02,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 01:32:02,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 01:32:02,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 01:32:02,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 01:32:02,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 01:32:02,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 01:32:02,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 01:32:02,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 01:32:02,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 01:32:02,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 01:32:02,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 01:32:02,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 01:32:02,380 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 01:32:02,407 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 01:32:02,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 01:32:02,407 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 01:32:02,407 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 01:32:02,408 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 01:32:02,408 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 01:32:02,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 01:32:02,409 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 01:32:02,409 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 01:32:02,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 01:32:02,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 01:32:02,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 01:32:02,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 01:32:02,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 01:32:02,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 01:32:02,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 01:32:02,410 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 01:32:02,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 01:32:02,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 01:32:02,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 01:32:02,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 01:32:02,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 01:32:02,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 01:32:02,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 01:32:02,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 01:32:02,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 01:32:02,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 01:32:02,412 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 01:32:02,412 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 01:32:02,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 01:32:02,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 01:32:02,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c6aa6e54aa03d80dc4005d195dc80cde5e772aed59b94df03248a4abb3fc0ec [2021-12-18 01:32:02,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 01:32:02,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 01:32:02,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 01:32:02,636 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 01:32:02,637 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 01:32:02,638 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2021-12-18 01:32:02,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8563af8ff/d63a966dc2c0409ba177fbe05c4a7662/FLAG4c2fe1cf7 [2021-12-18 01:32:03,288 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 01:32:03,288 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2021-12-18 01:32:03,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8563af8ff/d63a966dc2c0409ba177fbe05c4a7662/FLAG4c2fe1cf7 [2021-12-18 01:32:03,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8563af8ff/d63a966dc2c0409ba177fbe05c4a7662 [2021-12-18 01:32:03,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 01:32:03,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 01:32:03,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 01:32:03,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 01:32:03,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 01:32:03,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 01:32:03" (1/1) ... [2021-12-18 01:32:03,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3787f7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:32:03, skipping insertion in model container [2021-12-18 01:32:03,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 01:32:03" (1/1) ... [2021-12-18 01:32:03,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 01:32:03,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 01:32:04,967 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-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i[284671,284684] [2021-12-18 01:32:05,014 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 01:32:05,047 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 01:32:05,282 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-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i[284671,284684] [2021-12-18 01:32:05,294 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 01:32:05,335 INFO L208 MainTranslator]: Completed translation [2021-12-18 01:32:05,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:32:05 WrapperNode [2021-12-18 01:32:05,337 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 01:32:05,338 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 01:32:05,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 01:32:05,338 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 01:32:05,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:32:05" (1/1) ... [2021-12-18 01:32:05,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:32:05" (1/1) ... [2021-12-18 01:32:05,512 INFO L137 Inliner]: procedures = 177, calls = 1597, calls flagged for inlining = 87, calls inlined = 82, statements flattened = 3739 [2021-12-18 01:32:05,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 01:32:05,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 01:32:05,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 01:32:05,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 01:32:05,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:32:05" (1/1) ... [2021-12-18 01:32:05,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:32:05" (1/1) ... [2021-12-18 01:32:05,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:32:05" (1/1) ... [2021-12-18 01:32:05,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:32:05" (1/1) ... [2021-12-18 01:32:05,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:32:05" (1/1) ... [2021-12-18 01:32:05,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:32:05" (1/1) ... [2021-12-18 01:32:05,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:32:05" (1/1) ... [2021-12-18 01:32:05,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 01:32:05,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 01:32:05,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 01:32:05,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 01:32:05,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:32:05" (1/1) ... [2021-12-18 01:32:05,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 01:32:05,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:32:05,733 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 01:32:05,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 01:32:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-18 01:32:05,760 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-18 01:32:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-18 01:32:05,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-18 01:32:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-18 01:32:05,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-18 01:32:05,760 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_free_iso_urbs [2021-12-18 01:32:05,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_free_iso_urbs [2021-12-18 01:32:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 01:32:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-18 01:32:05,761 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-18 01:32:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2021-12-18 01:32:05,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2021-12-18 01:32:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 01:32:05,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 01:32:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-12-18 01:32:05,762 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-12-18 01:32:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 01:32:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_init_dvb [2021-12-18 01:32:05,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_init_dvb [2021-12-18 01:32:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-12-18 01:32:05,762 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-12-18 01:32:05,762 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2021-12-18 01:32:05,762 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2021-12-18 01:32:05,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-18 01:32:05,763 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-18 01:32:05,763 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-18 01:32:05,763 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-18 01:32:05,763 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 01:32:05,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 01:32:05,763 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-18 01:32:05,763 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-18 01:32:05,763 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-12-18 01:32:05,764 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-12-18 01:32:05,764 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 01:32:05,764 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 01:32:05,764 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_iso_xfer [2021-12-18 01:32:05,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_iso_xfer [2021-12-18 01:32:05,765 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-18 01:32:05,765 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-18 01:32:05,765 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_send_command [2021-12-18 01:32:05,765 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_send_command [2021-12-18 01:32:05,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 01:32:05,765 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 01:32:05,766 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 01:32:05,766 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_setup_urbs [2021-12-18 01:32:05,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_setup_urbs [2021-12-18 01:32:05,766 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-12-18 01:32:05,766 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-12-18 01:32:05,766 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2021-12-18 01:32:05,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2021-12-18 01:32:05,766 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_pids [2021-12-18 01:32:05,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_pids [2021-12-18 01:32:05,767 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit [2021-12-18 01:32:05,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit [2021-12-18 01:32:05,767 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_usb [2021-12-18 01:32:05,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_usb [2021-12-18 01:32:05,768 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2021-12-18 01:32:05,768 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2021-12-18 01:32:05,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 01:32:05,769 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-18 01:32:05,769 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-18 01:32:05,769 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_init [2021-12-18 01:32:05,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_init [2021-12-18 01:32:05,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 01:32:05,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 01:32:05,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 01:32:05,770 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-12-18 01:32:05,770 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-12-18 01:32:05,770 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-18 01:32:05,770 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-18 01:32:05,770 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 01:32:05,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-18 01:32:05,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 01:32:05,771 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-18 01:32:05,771 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-18 01:32:05,771 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-18 01:32:05,771 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-18 01:32:05,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-12-18 01:32:05,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-12-18 01:32:05,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 01:32:05,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 01:32:05,772 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_probe [2021-12-18 01:32:05,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_probe [2021-12-18 01:32:05,772 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-18 01:32:05,772 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-18 01:32:05,772 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2021-12-18 01:32:05,772 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2021-12-18 01:32:05,772 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-18 01:32:05,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-18 01:32:05,773 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-18 01:32:05,773 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-18 01:32:05,773 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-18 01:32:05,773 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-18 01:32:05,773 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-18 01:32:05,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-18 01:32:05,774 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_dvb [2021-12-18 01:32:05,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_dvb [2021-12-18 01:32:05,774 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-18 01:32:05,775 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-18 01:32:05,775 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 01:32:05,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 01:32:05,775 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_disconnect [2021-12-18 01:32:05,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_disconnect [2021-12-18 01:32:05,775 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-18 01:32:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-18 01:32:05,776 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2021-12-18 01:32:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2021-12-18 01:32:05,776 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_model [2021-12-18 01:32:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_model [2021-12-18 01:32:05,776 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-12-18 01:32:05,776 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-12-18 01:32:05,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 01:32:05,777 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-12-18 01:32:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-12-18 01:32:05,777 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_stop_iso_xfer [2021-12-18 01:32:05,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_stop_iso_xfer [2021-12-18 01:32:05,777 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-18 01:32:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-18 01:32:05,779 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_filter_pes2ts_init [2021-12-18 01:32:05,780 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_filter_pes2ts_init [2021-12-18 01:32:05,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 01:32:05,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 01:32:05,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 01:32:06,302 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 01:32:06,303 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 01:32:06,479 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-18 01:32:06,569 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2021-12-18 01:32:06,573 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2021-12-18 01:32:06,766 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-18 01:32:07,450 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##203: assume false; [2021-12-18 01:32:07,451 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##204: assume !false; [2021-12-18 01:32:07,611 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2021-12-18 01:32:07,615 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-18 01:32:07,616 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-18 01:32:09,966 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##78: assume !false; [2021-12-18 01:32:09,967 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume false; [2021-12-18 01:32:09,967 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !false; [2021-12-18 01:32:09,967 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume false; [2021-12-18 01:32:09,967 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L8653: ttusb_dec_start_feed_#res#1 := 0; [2021-12-18 01:32:10,299 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-18 01:32:10,679 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2021-12-18 01:32:10,679 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2021-12-18 01:32:10,702 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 01:32:10,710 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 01:32:10,715 INFO L301 CfgBuilder]: Removed 38 assume(true) statements. [2021-12-18 01:32:10,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 01:32:10 BoogieIcfgContainer [2021-12-18 01:32:10,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 01:32:10,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 01:32:10,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 01:32:10,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 01:32:10,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 01:32:03" (1/3) ... [2021-12-18 01:32:10,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d0b042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 01:32:10, skipping insertion in model container [2021-12-18 01:32:10,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 01:32:05" (2/3) ... [2021-12-18 01:32:10,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49d0b042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 01:32:10, skipping insertion in model container [2021-12-18 01:32:10,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 01:32:10" (3/3) ... [2021-12-18 01:32:10,725 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2021-12-18 01:32:10,728 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 01:32:10,729 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 01:32:10,768 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 01:32:10,773 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 01:32:10,774 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 01:32:10,805 INFO L276 IsEmpty]: Start isEmpty. Operand has 1005 states, 751 states have (on average 1.4141145139813582) internal successors, (1062), 775 states have internal predecessors, (1062), 199 states have call successors, (199), 54 states have call predecessors, (199), 53 states have return successors, (197), 191 states have call predecessors, (197), 197 states have call successors, (197) [2021-12-18 01:32:10,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-18 01:32:10,809 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:32:10,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:32:10,809 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:32:10,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:32:10,813 INFO L85 PathProgramCache]: Analyzing trace with hash -2066684568, now seen corresponding path program 1 times [2021-12-18 01:32:10,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:32:10,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817996751] [2021-12-18 01:32:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:32:10,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:32:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:11,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:32:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:11,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 01:32:11,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:32:11,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817996751] [2021-12-18 01:32:11,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817996751] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:32:11,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:32:11,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 01:32:11,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655240080] [2021-12-18 01:32:11,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:32:11,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 01:32:11,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:32:11,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 01:32:11,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 01:32:11,309 INFO L87 Difference]: Start difference. First operand has 1005 states, 751 states have (on average 1.4141145139813582) internal successors, (1062), 775 states have internal predecessors, (1062), 199 states have call successors, (199), 54 states have call predecessors, (199), 53 states have return successors, (197), 191 states have call predecessors, (197), 197 states have call successors, (197) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 01:32:11,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:32:11,497 INFO L93 Difference]: Finished difference Result 2975 states and 4442 transitions. [2021-12-18 01:32:11,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 01:32:11,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-12-18 01:32:11,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:32:11,550 INFO L225 Difference]: With dead ends: 2975 [2021-12-18 01:32:11,550 INFO L226 Difference]: Without dead ends: 1968 [2021-12-18 01:32:11,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 01:32:11,562 INFO L933 BasicCegarLoop]: 1960 mSDtfsCounter, 1356 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:32:11,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1356 Valid, 3316 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:32:11,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2021-12-18 01:32:11,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1964. [2021-12-18 01:32:11,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1964 states, 1471 states have (on average 1.301835486063902) internal successors, (1915), 1499 states have internal predecessors, (1915), 389 states have call successors, (389), 104 states have call predecessors, (389), 103 states have return successors, (399), 373 states have call predecessors, (399), 385 states have call successors, (399) [2021-12-18 01:32:11,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 2703 transitions. [2021-12-18 01:32:11,682 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 2703 transitions. Word has length 16 [2021-12-18 01:32:11,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:32:11,682 INFO L470 AbstractCegarLoop]: Abstraction has 1964 states and 2703 transitions. [2021-12-18 01:32:11,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 01:32:11,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 2703 transitions. [2021-12-18 01:32:11,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-18 01:32:11,684 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:32:11,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:32:11,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 01:32:11,685 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:32:11,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:32:11,687 INFO L85 PathProgramCache]: Analyzing trace with hash 356908155, now seen corresponding path program 1 times [2021-12-18 01:32:11,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:32:11,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639565967] [2021-12-18 01:32:11,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:32:11,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:32:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:11,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:32:11,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:11,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 01:32:11,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:32:11,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639565967] [2021-12-18 01:32:11,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639565967] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:32:11,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:32:11,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 01:32:11,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106932959] [2021-12-18 01:32:11,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:32:11,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 01:32:11,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:32:11,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 01:32:11,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 01:32:11,890 INFO L87 Difference]: Start difference. First operand 1964 states and 2703 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 01:32:12,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:32:12,018 INFO L93 Difference]: Finished difference Result 5865 states and 8150 transitions. [2021-12-18 01:32:12,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 01:32:12,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-18 01:32:12,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:32:12,044 INFO L225 Difference]: With dead ends: 5865 [2021-12-18 01:32:12,044 INFO L226 Difference]: Without dead ends: 3905 [2021-12-18 01:32:12,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 01:32:12,058 INFO L933 BasicCegarLoop]: 1797 mSDtfsCounter, 1343 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:32:12,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1343 Valid, 3146 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:32:12,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3905 states. [2021-12-18 01:32:12,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3905 to 3898. [2021-12-18 01:32:12,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3898 states, 2921 states have (on average 1.3012666894899008) internal successors, (3801), 2972 states have internal predecessors, (3801), 772 states have call successors, (772), 205 states have call predecessors, (772), 204 states have return successors, (832), 744 states have call predecessors, (832), 768 states have call successors, (832) [2021-12-18 01:32:12,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3898 states to 3898 states and 5405 transitions. [2021-12-18 01:32:12,240 INFO L78 Accepts]: Start accepts. Automaton has 3898 states and 5405 transitions. Word has length 17 [2021-12-18 01:32:12,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:32:12,241 INFO L470 AbstractCegarLoop]: Abstraction has 3898 states and 5405 transitions. [2021-12-18 01:32:12,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 01:32:12,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3898 states and 5405 transitions. [2021-12-18 01:32:12,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-18 01:32:12,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:32:12,243 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 01:32:12,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 01:32:12,243 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:32:12,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:32:12,249 INFO L85 PathProgramCache]: Analyzing trace with hash -731681733, now seen corresponding path program 1 times [2021-12-18 01:32:12,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:32:12,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068629437] [2021-12-18 01:32:12,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:32:12,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:32:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:12,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:32:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:12,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-18 01:32:12,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:12,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 01:32:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:12,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 01:32:12,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:32:12,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068629437] [2021-12-18 01:32:12,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068629437] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:32:12,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:32:12,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 01:32:12,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039002291] [2021-12-18 01:32:12,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:32:12,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 01:32:12,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:32:12,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 01:32:12,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 01:32:12,486 INFO L87 Difference]: Start difference. First operand 3898 states and 5405 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-18 01:32:14,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:32:16,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:32:16,602 INFO L93 Difference]: Finished difference Result 8706 states and 12321 transitions. [2021-12-18 01:32:16,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 01:32:16,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2021-12-18 01:32:16,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:32:16,628 INFO L225 Difference]: With dead ends: 8706 [2021-12-18 01:32:16,628 INFO L226 Difference]: Without dead ends: 4819 [2021-12-18 01:32:16,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 01:32:16,649 INFO L933 BasicCegarLoop]: 1376 mSDtfsCounter, 538 mSDsluCounter, 1776 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 250 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-18 01:32:16,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 3152 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 598 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2021-12-18 01:32:16,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4819 states. [2021-12-18 01:32:16,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4819 to 4038. [2021-12-18 01:32:16,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4038 states, 3031 states have (on average 1.297921478060046) internal successors, (3934), 3088 states have internal predecessors, (3934), 793 states have call successors, (793), 205 states have call predecessors, (793), 213 states have return successors, (892), 768 states have call predecessors, (892), 789 states have call successors, (892) [2021-12-18 01:32:16,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4038 states to 4038 states and 5619 transitions. [2021-12-18 01:32:16,801 INFO L78 Accepts]: Start accepts. Automaton has 4038 states and 5619 transitions. Word has length 60 [2021-12-18 01:32:16,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:32:16,801 INFO L470 AbstractCegarLoop]: Abstraction has 4038 states and 5619 transitions. [2021-12-18 01:32:16,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-18 01:32:16,802 INFO L276 IsEmpty]: Start isEmpty. Operand 4038 states and 5619 transitions. [2021-12-18 01:32:16,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-18 01:32:16,809 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:32:16,809 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-18 01:32:16,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 01:32:16,809 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:32:16,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:32:16,810 INFO L85 PathProgramCache]: Analyzing trace with hash 912073380, now seen corresponding path program 1 times [2021-12-18 01:32:16,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:32:16,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611339877] [2021-12-18 01:32:16,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:32:16,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:32:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:17,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:32:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:17,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 01:32:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:17,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 01:32:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:17,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:17,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:17,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 01:32:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:17,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 01:32:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-18 01:32:17,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:32:17,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611339877] [2021-12-18 01:32:17,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611339877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:32:17,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:32:17,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 01:32:17,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111409865] [2021-12-18 01:32:17,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:32:17,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 01:32:17,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:32:17,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 01:32:17,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-18 01:32:17,169 INFO L87 Difference]: Start difference. First operand 4038 states and 5619 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-18 01:32:20,094 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:32:27,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:32:27,977 INFO L93 Difference]: Finished difference Result 14181 states and 21445 transitions. [2021-12-18 01:32:27,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-18 01:32:27,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 94 [2021-12-18 01:32:27,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:32:28,032 INFO L225 Difference]: With dead ends: 14181 [2021-12-18 01:32:28,033 INFO L226 Difference]: Without dead ends: 10155 [2021-12-18 01:32:28,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-12-18 01:32:28,063 INFO L933 BasicCegarLoop]: 2076 mSDtfsCounter, 2737 mSDsluCounter, 4579 mSDsCounter, 0 mSdLazyCounter, 4624 mSolverCounterSat, 1164 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2947 SdHoareTripleChecker+Valid, 6655 SdHoareTripleChecker+Invalid, 5789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1164 IncrementalHoareTripleChecker+Valid, 4624 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2021-12-18 01:32:28,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2947 Valid, 6655 Invalid, 5789 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1164 Valid, 4624 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2021-12-18 01:32:28,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10155 states. [2021-12-18 01:32:28,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10155 to 8249. [2021-12-18 01:32:28,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8249 states, 6166 states have (on average 1.2969510217320792) internal successors, (7997), 6363 states have internal predecessors, (7997), 1580 states have call successors, (1580), 393 states have call predecessors, (1580), 502 states have return successors, (2508), 1552 states have call predecessors, (2508), 1576 states have call successors, (2508) [2021-12-18 01:32:28,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8249 states to 8249 states and 12085 transitions. [2021-12-18 01:32:28,448 INFO L78 Accepts]: Start accepts. Automaton has 8249 states and 12085 transitions. Word has length 94 [2021-12-18 01:32:28,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:32:28,450 INFO L470 AbstractCegarLoop]: Abstraction has 8249 states and 12085 transitions. [2021-12-18 01:32:28,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-18 01:32:28,451 INFO L276 IsEmpty]: Start isEmpty. Operand 8249 states and 12085 transitions. [2021-12-18 01:32:28,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-18 01:32:28,452 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:32:28,453 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-18 01:32:28,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 01:32:28,453 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:32:28,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:32:28,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1799296226, now seen corresponding path program 1 times [2021-12-18 01:32:28,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:32:28,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679314877] [2021-12-18 01:32:28,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:32:28,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:32:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:28,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:32:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:28,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 01:32:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:28,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 01:32:28,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:28,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:28,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:28,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 01:32:28,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:28,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 01:32:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:28,739 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-18 01:32:28,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:32:28,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679314877] [2021-12-18 01:32:28,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679314877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:32:28,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:32:28,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 01:32:28,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578152963] [2021-12-18 01:32:28,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:32:28,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 01:32:28,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:32:28,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 01:32:28,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-18 01:32:28,742 INFO L87 Difference]: Start difference. First operand 8249 states and 12085 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 01:32:33,806 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:32:35,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:32:35,488 INFO L93 Difference]: Finished difference Result 18232 states and 27323 transitions. [2021-12-18 01:32:35,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 01:32:35,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 94 [2021-12-18 01:32:35,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:32:35,558 INFO L225 Difference]: With dead ends: 18232 [2021-12-18 01:32:35,558 INFO L226 Difference]: Without dead ends: 9989 [2021-12-18 01:32:35,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-18 01:32:35,600 INFO L933 BasicCegarLoop]: 1327 mSDtfsCounter, 619 mSDsluCounter, 4471 mSDsCounter, 0 mSdLazyCounter, 2178 mSolverCounterSat, 288 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 5798 SdHoareTripleChecker+Invalid, 2467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 2178 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-12-18 01:32:35,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 5798 Invalid, 2467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 2178 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-12-18 01:32:35,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9989 states. [2021-12-18 01:32:35,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9989 to 8214. [2021-12-18 01:32:35,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8214 states, 6131 states have (on average 1.2944054803457836) internal successors, (7936), 6329 states have internal predecessors, (7936), 1576 states have call successors, (1576), 393 states have call predecessors, (1576), 506 states have return successors, (2494), 1551 states have call predecessors, (2494), 1572 states have call successors, (2494) [2021-12-18 01:32:35,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8214 states to 8214 states and 12006 transitions. [2021-12-18 01:32:35,926 INFO L78 Accepts]: Start accepts. Automaton has 8214 states and 12006 transitions. Word has length 94 [2021-12-18 01:32:35,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:32:35,927 INFO L470 AbstractCegarLoop]: Abstraction has 8214 states and 12006 transitions. [2021-12-18 01:32:35,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 01:32:35,929 INFO L276 IsEmpty]: Start isEmpty. Operand 8214 states and 12006 transitions. [2021-12-18 01:32:35,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-18 01:32:35,933 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:32:35,933 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-12-18 01:32:35,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 01:32:35,934 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:32:35,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:32:35,935 INFO L85 PathProgramCache]: Analyzing trace with hash 592234421, now seen corresponding path program 1 times [2021-12-18 01:32:35,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:32:35,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727866282] [2021-12-18 01:32:35,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:32:35,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:32:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:36,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:32:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:36,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 01:32:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:36,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 01:32:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:36,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:36,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:36,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 01:32:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:36,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 01:32:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:36,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 01:32:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:36,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 01:32:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:36,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 01:32:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:36,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 01:32:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:36,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 01:32:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:36,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 01:32:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:36,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 01:32:36,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:36,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:32:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:36,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 01:32:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:36,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 01:32:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:36,556 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-18 01:32:36,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:32:36,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727866282] [2021-12-18 01:32:36,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727866282] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:32:36,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841420866] [2021-12-18 01:32:36,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:32:36,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:32:36,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:32:36,559 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:32:36,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 01:32:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:37,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 2915 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-18 01:32:37,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:32:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-18 01:32:37,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:32:37,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841420866] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:32:37,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:32:37,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2021-12-18 01:32:37,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909731808] [2021-12-18 01:32:37,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:32:37,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 01:32:37,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:32:37,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 01:32:37,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-12-18 01:32:37,483 INFO L87 Difference]: Start difference. First operand 8214 states and 12006 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 01:32:37,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:32:37,699 INFO L93 Difference]: Finished difference Result 16420 states and 24003 transitions. [2021-12-18 01:32:37,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 01:32:37,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 124 [2021-12-18 01:32:37,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:32:37,729 INFO L225 Difference]: With dead ends: 16420 [2021-12-18 01:32:37,729 INFO L226 Difference]: Without dead ends: 8214 [2021-12-18 01:32:37,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-12-18 01:32:37,758 INFO L933 BasicCegarLoop]: 1354 mSDtfsCounter, 0 mSDsluCounter, 4057 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5411 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:32:37,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5411 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:32:37,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8214 states. [2021-12-18 01:32:37,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8214 to 8214. [2021-12-18 01:32:37,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8214 states, 6131 states have (on average 1.2942423748165062) internal successors, (7935), 6329 states have internal predecessors, (7935), 1576 states have call successors, (1576), 393 states have call predecessors, (1576), 506 states have return successors, (2494), 1551 states have call predecessors, (2494), 1572 states have call successors, (2494) [2021-12-18 01:32:38,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8214 states to 8214 states and 12005 transitions. [2021-12-18 01:32:38,035 INFO L78 Accepts]: Start accepts. Automaton has 8214 states and 12005 transitions. Word has length 124 [2021-12-18 01:32:38,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:32:38,035 INFO L470 AbstractCegarLoop]: Abstraction has 8214 states and 12005 transitions. [2021-12-18 01:32:38,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 01:32:38,035 INFO L276 IsEmpty]: Start isEmpty. Operand 8214 states and 12005 transitions. [2021-12-18 01:32:38,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-18 01:32:38,036 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:32:38,037 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-12-18 01:32:38,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 01:32:38,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-18 01:32:38,240 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:32:38,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:32:38,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1878716726, now seen corresponding path program 1 times [2021-12-18 01:32:38,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:32:38,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366244214] [2021-12-18 01:32:38,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:32:38,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:32:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:38,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:32:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:38,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 01:32:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:38,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 01:32:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:38,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:38,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:38,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 01:32:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:38,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 01:32:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:38,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 01:32:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:38,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 01:32:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:38,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 01:32:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:38,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 01:32:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:38,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 01:32:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:38,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 01:32:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:38,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 01:32:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:38,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:32:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:38,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 01:32:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:38,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 01:32:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:38,706 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-18 01:32:38,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:32:38,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366244214] [2021-12-18 01:32:38,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366244214] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:32:38,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809403421] [2021-12-18 01:32:38,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:32:38,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:32:38,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:32:38,708 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:32:38,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 01:32:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:39,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 2915 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 01:32:39,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:32:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-18 01:32:39,639 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:32:39,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809403421] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:32:39,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:32:39,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2021-12-18 01:32:39,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384923827] [2021-12-18 01:32:39,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:32:39,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 01:32:39,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:32:39,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 01:32:39,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-12-18 01:32:39,641 INFO L87 Difference]: Start difference. First operand 8214 states and 12005 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 01:32:39,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:32:39,828 INFO L93 Difference]: Finished difference Result 8266 states and 12057 transitions. [2021-12-18 01:32:39,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 01:32:39,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 124 [2021-12-18 01:32:39,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:32:39,861 INFO L225 Difference]: With dead ends: 8266 [2021-12-18 01:32:39,862 INFO L226 Difference]: Without dead ends: 8240 [2021-12-18 01:32:39,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-12-18 01:32:39,869 INFO L933 BasicCegarLoop]: 1355 mSDtfsCounter, 1350 mSDsluCounter, 2717 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 4072 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:32:39,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1351 Valid, 4072 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:32:39,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8240 states. [2021-12-18 01:32:40,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8240 to 8214. [2021-12-18 01:32:40,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8214 states, 6131 states have (on average 1.293753058228674) internal successors, (7932), 6329 states have internal predecessors, (7932), 1576 states have call successors, (1576), 393 states have call predecessors, (1576), 506 states have return successors, (2494), 1551 states have call predecessors, (2494), 1572 states have call successors, (2494) [2021-12-18 01:32:40,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8214 states to 8214 states and 12002 transitions. [2021-12-18 01:32:40,166 INFO L78 Accepts]: Start accepts. Automaton has 8214 states and 12002 transitions. Word has length 124 [2021-12-18 01:32:40,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:32:40,166 INFO L470 AbstractCegarLoop]: Abstraction has 8214 states and 12002 transitions. [2021-12-18 01:32:40,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 01:32:40,167 INFO L276 IsEmpty]: Start isEmpty. Operand 8214 states and 12002 transitions. [2021-12-18 01:32:40,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-18 01:32:40,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:32:40,168 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-12-18 01:32:40,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 01:32:40,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-18 01:32:40,384 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:32:40,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:32:40,384 INFO L85 PathProgramCache]: Analyzing trace with hash 220225050, now seen corresponding path program 1 times [2021-12-18 01:32:40,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:32:40,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797513182] [2021-12-18 01:32:40,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:32:40,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:32:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:40,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:32:40,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:40,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:32:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:40,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:40,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:40,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:40,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 01:32:40,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:40,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 01:32:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:40,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 01:32:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:40,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 01:32:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:40,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 01:32:40,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:40,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 01:32:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:40,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 01:32:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:40,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 01:32:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:40,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 01:32:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:40,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:32:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:40,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 01:32:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:40,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-18 01:32:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:40,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 01:32:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:40,843 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-18 01:32:40,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:32:40,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797513182] [2021-12-18 01:32:40,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797513182] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:32:40,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742234835] [2021-12-18 01:32:40,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:32:40,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:32:40,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:32:40,845 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:32:40,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 01:32:41,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:41,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-18 01:32:41,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:32:41,808 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-18 01:32:41,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:32:41,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742234835] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:32:41,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:32:41,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-18 01:32:41,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830581244] [2021-12-18 01:32:41,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:32:41,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 01:32:41,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:32:41,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 01:32:41,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-12-18 01:32:41,809 INFO L87 Difference]: Start difference. First operand 8214 states and 12002 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 01:32:42,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:32:42,035 INFO L93 Difference]: Finished difference Result 14335 states and 21283 transitions. [2021-12-18 01:32:42,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 01:32:42,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2021-12-18 01:32:42,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:32:42,053 INFO L225 Difference]: With dead ends: 14335 [2021-12-18 01:32:42,053 INFO L226 Difference]: Without dead ends: 6133 [2021-12-18 01:32:42,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-12-18 01:32:42,079 INFO L933 BasicCegarLoop]: 1352 mSDtfsCounter, 0 mSDsluCounter, 4051 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5403 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:32:42,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 5403 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:32:42,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6133 states. [2021-12-18 01:32:42,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6133 to 6119. [2021-12-18 01:32:42,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6119 states, 4567 states have (on average 1.2925333917232318) internal successors, (5903), 4714 states have internal predecessors, (5903), 1174 states have call successors, (1174), 295 states have call predecessors, (1174), 377 states have return successors, (1807), 1154 states have call predecessors, (1807), 1170 states have call successors, (1807) [2021-12-18 01:32:42,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6119 states to 6119 states and 8884 transitions. [2021-12-18 01:32:42,246 INFO L78 Accepts]: Start accepts. Automaton has 6119 states and 8884 transitions. Word has length 130 [2021-12-18 01:32:42,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:32:42,247 INFO L470 AbstractCegarLoop]: Abstraction has 6119 states and 8884 transitions. [2021-12-18 01:32:42,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-18 01:32:42,247 INFO L276 IsEmpty]: Start isEmpty. Operand 6119 states and 8884 transitions. [2021-12-18 01:32:42,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-18 01:32:42,248 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:32:42,249 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-12-18 01:32:42,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 01:32:42,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:32:42,471 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:32:42,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:32:42,471 INFO L85 PathProgramCache]: Analyzing trace with hash 713006253, now seen corresponding path program 1 times [2021-12-18 01:32:42,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:32:42,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398751370] [2021-12-18 01:32:42,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:32:42,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:32:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:42,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:32:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:42,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 01:32:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:42,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 01:32:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:42,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:42,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:42,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 01:32:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:42,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 01:32:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:42,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 01:32:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:42,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 01:32:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:42,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 01:32:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:42,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 01:32:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:42,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 01:32:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:42,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 01:32:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:42,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 01:32:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:42,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:32:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:42,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 01:32:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:42,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 01:32:42,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:42,942 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-18 01:32:42,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:32:42,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398751370] [2021-12-18 01:32:42,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398751370] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:32:42,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465695558] [2021-12-18 01:32:42,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:32:42,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:32:42,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:32:42,944 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:32:42,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 01:32:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:43,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 2927 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 01:32:43,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:32:43,822 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-18 01:32:43,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:32:43,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465695558] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:32:43,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:32:43,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2021-12-18 01:32:43,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472868399] [2021-12-18 01:32:43,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:32:43,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 01:32:43,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:32:43,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 01:32:43,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-18 01:32:43,824 INFO L87 Difference]: Start difference. First operand 6119 states and 8884 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-18 01:32:43,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:32:43,978 INFO L93 Difference]: Finished difference Result 12226 states and 17756 transitions. [2021-12-18 01:32:43,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 01:32:43,978 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 128 [2021-12-18 01:32:43,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:32:44,001 INFO L225 Difference]: With dead ends: 12226 [2021-12-18 01:32:44,001 INFO L226 Difference]: Without dead ends: 6119 [2021-12-18 01:32:44,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-18 01:32:44,058 INFO L933 BasicCegarLoop]: 1355 mSDtfsCounter, 22 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 4021 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:32:44,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 4021 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:32:44,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6119 states. [2021-12-18 01:32:44,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6119 to 6119. [2021-12-18 01:32:44,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6119 states, 4567 states have (on average 1.2914385811254654) internal successors, (5898), 4714 states have internal predecessors, (5898), 1174 states have call successors, (1174), 295 states have call predecessors, (1174), 377 states have return successors, (1807), 1154 states have call predecessors, (1807), 1170 states have call successors, (1807) [2021-12-18 01:32:44,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6119 states to 6119 states and 8879 transitions. [2021-12-18 01:32:44,224 INFO L78 Accepts]: Start accepts. Automaton has 6119 states and 8879 transitions. Word has length 128 [2021-12-18 01:32:44,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:32:44,224 INFO L470 AbstractCegarLoop]: Abstraction has 6119 states and 8879 transitions. [2021-12-18 01:32:44,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-18 01:32:44,225 INFO L276 IsEmpty]: Start isEmpty. Operand 6119 states and 8879 transitions. [2021-12-18 01:32:44,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-18 01:32:44,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:32:44,227 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-12-18 01:32:44,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 01:32:44,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:32:44,443 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:32:44,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:32:44,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1181839067, now seen corresponding path program 1 times [2021-12-18 01:32:44,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:32:44,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874579347] [2021-12-18 01:32:44,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:32:44,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:32:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:44,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:32:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:44,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:32:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:44,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:44,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:44,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 01:32:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:44,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 01:32:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:44,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 01:32:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:44,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 01:32:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:44,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 01:32:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:44,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 01:32:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:44,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 01:32:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:44,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 01:32:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:44,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 01:32:44,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:44,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:32:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:44,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 01:32:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:44,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-18 01:32:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:44,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 01:32:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:44,873 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-18 01:32:44,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:32:44,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874579347] [2021-12-18 01:32:44,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874579347] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:32:44,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548903335] [2021-12-18 01:32:44,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:32:44,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:32:44,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:32:44,875 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:32:44,880 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 01:32:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:45,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 2991 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 01:32:45,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:32:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-18 01:32:45,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:32:46,267 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-18 01:32:46,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548903335] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-18 01:32:46,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-18 01:32:46,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 6] total 18 [2021-12-18 01:32:46,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239220242] [2021-12-18 01:32:46,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:32:46,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 01:32:46,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:32:46,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 01:32:46,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-12-18 01:32:46,269 INFO L87 Difference]: Start difference. First operand 6119 states and 8879 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 5 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-18 01:32:48,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:32:48,242 INFO L93 Difference]: Finished difference Result 10222 states and 15271 transitions. [2021-12-18 01:32:48,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 01:32:48,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 5 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 130 [2021-12-18 01:32:48,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:32:48,274 INFO L225 Difference]: With dead ends: 10222 [2021-12-18 01:32:48,274 INFO L226 Difference]: Without dead ends: 10217 [2021-12-18 01:32:48,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-12-18 01:32:48,280 INFO L933 BasicCegarLoop]: 2111 mSDtfsCounter, 5021 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 1111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5021 SdHoareTripleChecker+Valid, 2821 SdHoareTripleChecker+Invalid, 1759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1111 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-18 01:32:48,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5021 Valid, 2821 Invalid, 1759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1111 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-18 01:32:48,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10217 states. [2021-12-18 01:32:48,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10217 to 10191. [2021-12-18 01:32:48,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10191 states, 7601 states have (on average 1.2907512169451387) internal successors, (9811), 7844 states have internal predecessors, (9811), 1960 states have call successors, (1960), 489 states have call predecessors, (1960), 629 states have return successors, (3464), 1932 states have call predecessors, (3464), 1956 states have call successors, (3464) [2021-12-18 01:32:48,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10191 states to 10191 states and 15235 transitions. [2021-12-18 01:32:48,604 INFO L78 Accepts]: Start accepts. Automaton has 10191 states and 15235 transitions. Word has length 130 [2021-12-18 01:32:48,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:32:48,605 INFO L470 AbstractCegarLoop]: Abstraction has 10191 states and 15235 transitions. [2021-12-18 01:32:48,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 5 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-18 01:32:48,605 INFO L276 IsEmpty]: Start isEmpty. Operand 10191 states and 15235 transitions. [2021-12-18 01:32:48,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-18 01:32:48,608 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:32:48,608 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-12-18 01:32:48,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-18 01:32:48,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-18 01:32:48,823 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:32:48,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:32:48,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1451746167, now seen corresponding path program 1 times [2021-12-18 01:32:48,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:32:48,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86773825] [2021-12-18 01:32:48,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:32:48,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:32:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:48,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:32:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:48,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:32:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:49,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:49,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:49,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 01:32:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:49,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 01:32:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:49,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 01:32:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:49,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 01:32:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:49,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 01:32:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:49,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 01:32:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:49,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 01:32:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:49,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 01:32:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:49,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 01:32:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:49,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 01:32:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:49,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:32:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:49,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 01:32:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:49,304 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-18 01:32:49,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:32:49,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86773825] [2021-12-18 01:32:49,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86773825] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:32:49,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784810831] [2021-12-18 01:32:49,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:32:49,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:32:49,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:32:49,306 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:32:49,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 01:32:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:50,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 3080 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 01:32:50,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:32:50,303 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-18 01:32:50,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:32:50,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784810831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:32:50,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:32:50,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-18 01:32:50,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228843432] [2021-12-18 01:32:50,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:32:50,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 01:32:50,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:32:50,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 01:32:50,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-12-18 01:32:50,305 INFO L87 Difference]: Start difference. First operand 10191 states and 15235 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-18 01:32:51,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:32:51,001 INFO L93 Difference]: Finished difference Result 25260 states and 39669 transitions. [2021-12-18 01:32:51,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 01:32:51,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 147 [2021-12-18 01:32:51,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:32:51,073 INFO L225 Difference]: With dead ends: 25260 [2021-12-18 01:32:51,073 INFO L226 Difference]: Without dead ends: 15081 [2021-12-18 01:32:51,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-12-18 01:32:51,138 INFO L933 BasicCegarLoop]: 1899 mSDtfsCounter, 983 mSDsluCounter, 4817 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 6716 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 01:32:51,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 6716 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 01:32:51,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15081 states. [2021-12-18 01:32:51,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15081 to 10231. [2021-12-18 01:32:51,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10231 states, 7631 states have (on average 1.2896081771720613) internal successors, (9841), 7874 states have internal predecessors, (9841), 1970 states have call successors, (1970), 489 states have call predecessors, (1970), 629 states have return successors, (3474), 1942 states have call predecessors, (3474), 1966 states have call successors, (3474) [2021-12-18 01:32:51,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10231 states to 10231 states and 15285 transitions. [2021-12-18 01:32:51,705 INFO L78 Accepts]: Start accepts. Automaton has 10231 states and 15285 transitions. Word has length 147 [2021-12-18 01:32:51,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:32:51,706 INFO L470 AbstractCegarLoop]: Abstraction has 10231 states and 15285 transitions. [2021-12-18 01:32:51,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-18 01:32:51,706 INFO L276 IsEmpty]: Start isEmpty. Operand 10231 states and 15285 transitions. [2021-12-18 01:32:51,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-18 01:32:51,708 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:32:51,708 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-12-18 01:32:51,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-18 01:32:51,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:32:51,923 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:32:51,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:32:51,924 INFO L85 PathProgramCache]: Analyzing trace with hash 476526535, now seen corresponding path program 1 times [2021-12-18 01:32:51,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:32:51,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796813398] [2021-12-18 01:32:51,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:32:51,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:32:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:52,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:32:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:52,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:32:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:52,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:52,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:52,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 01:32:52,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:52,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 01:32:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:52,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 01:32:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:52,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 01:32:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:52,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 01:32:52,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:52,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 01:32:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:52,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 01:32:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:52,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 01:32:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:52,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 01:32:52,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:52,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 01:32:52,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:52,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:32:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:52,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 01:32:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:52,348 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-18 01:32:52,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:32:52,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796813398] [2021-12-18 01:32:52,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796813398] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:32:52,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230655636] [2021-12-18 01:32:52,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:32:52,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:32:52,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:32:52,350 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:32:52,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-18 01:32:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:53,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 3073 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-18 01:32:53,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:32:53,428 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-18 01:32:53,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:32:53,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230655636] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:32:53,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:32:53,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 12 [2021-12-18 01:32:53,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309893411] [2021-12-18 01:32:53,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:32:53,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 01:32:53,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:32:53,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 01:32:53,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-18 01:32:53,430 INFO L87 Difference]: Start difference. First operand 10231 states and 15285 transitions. Second operand has 10 states, 10 states have (on average 10.1) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (16), 5 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 01:32:53,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:32:53,848 INFO L93 Difference]: Finished difference Result 20380 states and 31374 transitions. [2021-12-18 01:32:53,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 01:32:53,851 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (16), 5 states have call predecessors, (16), 2 states have call successors, (16) Word has length 147 [2021-12-18 01:32:53,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:32:53,891 INFO L225 Difference]: With dead ends: 20380 [2021-12-18 01:32:53,891 INFO L226 Difference]: Without dead ends: 10161 [2021-12-18 01:32:53,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 174 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-18 01:32:53,948 INFO L933 BasicCegarLoop]: 1351 mSDtfsCounter, 4 mSDsluCounter, 10787 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 12138 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 01:32:53,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 12138 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 01:32:53,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10161 states. [2021-12-18 01:32:54,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10161 to 10146. [2021-12-18 01:32:54,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10146 states, 7570 states have (on average 1.2867899603698811) internal successors, (9741), 7797 states have internal predecessors, (9741), 1950 states have call successors, (1950), 484 states have call predecessors, (1950), 625 states have return successors, (3455), 1939 states have call predecessors, (3455), 1946 states have call successors, (3455) [2021-12-18 01:32:54,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10146 states to 10146 states and 15146 transitions. [2021-12-18 01:32:54,284 INFO L78 Accepts]: Start accepts. Automaton has 10146 states and 15146 transitions. Word has length 147 [2021-12-18 01:32:54,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:32:54,284 INFO L470 AbstractCegarLoop]: Abstraction has 10146 states and 15146 transitions. [2021-12-18 01:32:54,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 7 states have internal predecessors, (101), 2 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (16), 5 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 01:32:54,285 INFO L276 IsEmpty]: Start isEmpty. Operand 10146 states and 15146 transitions. [2021-12-18 01:32:54,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-18 01:32:54,287 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:32:54,287 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-12-18 01:32:54,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-18 01:32:54,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:32:54,499 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:32:54,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:32:54,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1702772326, now seen corresponding path program 1 times [2021-12-18 01:32:54,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:32:54,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35833607] [2021-12-18 01:32:54,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:32:54,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:32:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:54,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:32:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:54,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:32:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:54,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:54,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:32:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:54,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 01:32:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:54,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 01:32:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:54,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 01:32:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:54,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 01:32:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:54,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 01:32:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:54,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 01:32:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:54,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 01:32:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:54,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 01:32:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:54,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 01:32:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:54,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 01:32:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:54,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:32:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:54,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 01:32:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:32:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-18 01:32:54,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:32:54,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35833607] [2021-12-18 01:32:54,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35833607] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:32:54,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:32:54,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 01:32:54,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530849411] [2021-12-18 01:32:54,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:32:54,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 01:32:54,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:32:54,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 01:32:54,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:32:54,888 INFO L87 Difference]: Start difference. First operand 10146 states and 15146 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-18 01:32:58,784 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:33:00,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:33:00,235 INFO L93 Difference]: Finished difference Result 23502 states and 37366 transitions. [2021-12-18 01:33:00,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 01:33:00,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 147 [2021-12-18 01:33:00,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:33:00,299 INFO L225 Difference]: With dead ends: 23502 [2021-12-18 01:33:00,300 INFO L226 Difference]: Without dead ends: 13368 [2021-12-18 01:33:00,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:33:00,366 INFO L933 BasicCegarLoop]: 1666 mSDtfsCounter, 753 mSDsluCounter, 2708 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 252 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 4374 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-18 01:33:00,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 4374 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 1050 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-12-18 01:33:00,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13368 states. [2021-12-18 01:33:00,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13368 to 10390. [2021-12-18 01:33:00,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10390 states, 7730 states have (on average 1.2842173350582147) internal successors, (9927), 7965 states have internal predecessors, (9927), 2016 states have call successors, (2016), 484 states have call predecessors, (2016), 643 states have return successors, (3673), 2015 states have call predecessors, (3673), 2012 states have call successors, (3673) [2021-12-18 01:33:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10390 states to 10390 states and 15616 transitions. [2021-12-18 01:33:00,876 INFO L78 Accepts]: Start accepts. Automaton has 10390 states and 15616 transitions. Word has length 147 [2021-12-18 01:33:00,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:33:00,877 INFO L470 AbstractCegarLoop]: Abstraction has 10390 states and 15616 transitions. [2021-12-18 01:33:00,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-18 01:33:00,878 INFO L276 IsEmpty]: Start isEmpty. Operand 10390 states and 15616 transitions. [2021-12-18 01:33:00,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-18 01:33:00,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:33:00,880 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-12-18 01:33:00,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-18 01:33:00,880 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:33:00,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:33:00,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1101519382, now seen corresponding path program 1 times [2021-12-18 01:33:00,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:33:00,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704149936] [2021-12-18 01:33:00,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:33:00,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:33:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:01,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:33:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:01,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:33:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:01,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:33:01,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:01,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:33:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:01,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 01:33:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:01,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 01:33:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:01,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 01:33:01,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:01,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 01:33:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:01,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 01:33:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:01,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 01:33:01,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:01,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 01:33:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:01,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 01:33:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:01,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 01:33:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:01,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 01:33:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:01,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:33:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:01,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 01:33:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:01,184 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-18 01:33:01,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:33:01,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704149936] [2021-12-18 01:33:01,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704149936] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:33:01,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:33:01,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 01:33:01,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451650549] [2021-12-18 01:33:01,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:33:01,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 01:33:01,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:33:01,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 01:33:01,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-18 01:33:01,186 INFO L87 Difference]: Start difference. First operand 10390 states and 15616 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-18 01:33:05,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:33:07,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:33:07,710 INFO L93 Difference]: Finished difference Result 23778 states and 37846 transitions. [2021-12-18 01:33:07,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 01:33:07,710 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 147 [2021-12-18 01:33:07,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:33:07,776 INFO L225 Difference]: With dead ends: 23778 [2021-12-18 01:33:07,776 INFO L226 Difference]: Without dead ends: 13400 [2021-12-18 01:33:07,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-18 01:33:07,851 INFO L933 BasicCegarLoop]: 1667 mSDtfsCounter, 937 mSDsluCounter, 5382 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 376 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 7049 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 376 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-12-18 01:33:07,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 7049 Invalid, 2014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [376 Valid, 1637 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-12-18 01:33:07,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13400 states. [2021-12-18 01:33:08,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13400 to 10420. [2021-12-18 01:33:08,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10420 states, 7760 states have (on average 1.283118556701031) internal successors, (9957), 7995 states have internal predecessors, (9957), 2016 states have call successors, (2016), 484 states have call predecessors, (2016), 643 states have return successors, (3673), 2015 states have call predecessors, (3673), 2012 states have call successors, (3673) [2021-12-18 01:33:08,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10420 states to 10420 states and 15646 transitions. [2021-12-18 01:33:08,295 INFO L78 Accepts]: Start accepts. Automaton has 10420 states and 15646 transitions. Word has length 147 [2021-12-18 01:33:08,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:33:08,296 INFO L470 AbstractCegarLoop]: Abstraction has 10420 states and 15646 transitions. [2021-12-18 01:33:08,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-18 01:33:08,296 INFO L276 IsEmpty]: Start isEmpty. Operand 10420 states and 15646 transitions. [2021-12-18 01:33:08,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-18 01:33:08,299 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:33:08,299 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-12-18 01:33:08,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-18 01:33:08,299 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:33:08,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:33:08,300 INFO L85 PathProgramCache]: Analyzing trace with hash -396683671, now seen corresponding path program 1 times [2021-12-18 01:33:08,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:33:08,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114767809] [2021-12-18 01:33:08,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:33:08,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:33:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:08,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:33:08,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:08,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:33:08,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:08,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:33:08,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:08,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:33:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:08,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 01:33:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:08,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 01:33:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:08,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 01:33:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:08,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 01:33:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:08,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 01:33:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:08,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 01:33:08,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:08,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 01:33:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:08,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 01:33:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:08,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 01:33:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:08,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-18 01:33:08,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:08,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:33:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:08,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 01:33:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:08,608 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-18 01:33:08,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:33:08,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114767809] [2021-12-18 01:33:08,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114767809] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:33:08,609 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:33:08,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 01:33:08,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319188034] [2021-12-18 01:33:08,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:33:08,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 01:33:08,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:33:08,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 01:33:08,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-18 01:33:08,610 INFO L87 Difference]: Start difference. First operand 10420 states and 15646 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-18 01:33:12,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:33:14,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:33:14,626 INFO L93 Difference]: Finished difference Result 26168 states and 41860 transitions. [2021-12-18 01:33:14,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 01:33:14,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 158 [2021-12-18 01:33:14,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:33:14,701 INFO L225 Difference]: With dead ends: 26168 [2021-12-18 01:33:14,701 INFO L226 Difference]: Without dead ends: 15760 [2021-12-18 01:33:14,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-18 01:33:14,770 INFO L933 BasicCegarLoop]: 1926 mSDtfsCounter, 1674 mSDsluCounter, 5196 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 711 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1779 SdHoareTripleChecker+Valid, 7122 SdHoareTripleChecker+Invalid, 2065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-18 01:33:14,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1779 Valid, 7122 Invalid, 2065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [711 Valid, 1353 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2021-12-18 01:33:14,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15760 states. [2021-12-18 01:33:15,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15760 to 10450. [2021-12-18 01:33:15,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10450 states, 7790 states have (on average 1.282028241335045) internal successors, (9987), 8025 states have internal predecessors, (9987), 2016 states have call successors, (2016), 484 states have call predecessors, (2016), 643 states have return successors, (3673), 2015 states have call predecessors, (3673), 2012 states have call successors, (3673) [2021-12-18 01:33:15,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10450 states to 10450 states and 15676 transitions. [2021-12-18 01:33:15,342 INFO L78 Accepts]: Start accepts. Automaton has 10450 states and 15676 transitions. Word has length 158 [2021-12-18 01:33:15,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:33:15,342 INFO L470 AbstractCegarLoop]: Abstraction has 10450 states and 15676 transitions. [2021-12-18 01:33:15,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-18 01:33:15,342 INFO L276 IsEmpty]: Start isEmpty. Operand 10450 states and 15676 transitions. [2021-12-18 01:33:15,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-18 01:33:15,346 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:33:15,346 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-12-18 01:33:15,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-18 01:33:15,346 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:33:15,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:33:15,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1248643979, now seen corresponding path program 1 times [2021-12-18 01:33:15,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:33:15,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309430359] [2021-12-18 01:33:15,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:33:15,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:33:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:15,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:33:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:15,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:33:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:15,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:33:15,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:15,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:33:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:15,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 01:33:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:15,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 01:33:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:15,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 01:33:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:15,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 01:33:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:15,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 01:33:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:15,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 01:33:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:15,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 01:33:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:15,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 01:33:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:15,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 01:33:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:15,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 01:33:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:15,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:33:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:15,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 01:33:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-18 01:33:15,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:33:15,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309430359] [2021-12-18 01:33:15,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309430359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:33:15,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:33:15,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 01:33:15,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226059121] [2021-12-18 01:33:15,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:33:15,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 01:33:15,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:33:15,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 01:33:15,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:33:15,590 INFO L87 Difference]: Start difference. First operand 10450 states and 15676 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-18 01:33:19,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:33:20,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:33:20,343 INFO L93 Difference]: Finished difference Result 24078 states and 38264 transitions. [2021-12-18 01:33:20,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 01:33:20,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) Word has length 159 [2021-12-18 01:33:20,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:33:20,406 INFO L225 Difference]: With dead ends: 24078 [2021-12-18 01:33:20,406 INFO L226 Difference]: Without dead ends: 13640 [2021-12-18 01:33:20,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 01:33:20,562 INFO L933 BasicCegarLoop]: 1700 mSDtfsCounter, 1151 mSDsluCounter, 2044 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 530 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 3744 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-18 01:33:20,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1263 Valid, 3744 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [530 Valid, 702 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-12-18 01:33:20,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13640 states. [2021-12-18 01:33:20,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13640 to 10460. [2021-12-18 01:33:20,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10460 states, 7800 states have (on average 1.2816666666666667) internal successors, (9997), 8035 states have internal predecessors, (9997), 2016 states have call successors, (2016), 484 states have call predecessors, (2016), 643 states have return successors, (3673), 2015 states have call predecessors, (3673), 2012 states have call successors, (3673) [2021-12-18 01:33:20,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10460 states to 10460 states and 15686 transitions. [2021-12-18 01:33:20,995 INFO L78 Accepts]: Start accepts. Automaton has 10460 states and 15686 transitions. Word has length 159 [2021-12-18 01:33:20,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:33:20,997 INFO L470 AbstractCegarLoop]: Abstraction has 10460 states and 15686 transitions. [2021-12-18 01:33:20,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 3 states have internal predecessors, (111), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-18 01:33:20,997 INFO L276 IsEmpty]: Start isEmpty. Operand 10460 states and 15686 transitions. [2021-12-18 01:33:21,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-18 01:33:21,000 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:33:21,001 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-12-18 01:33:21,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-18 01:33:21,001 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:33:21,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:33:21,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1118050615, now seen corresponding path program 1 times [2021-12-18 01:33:21,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:33:21,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654940036] [2021-12-18 01:33:21,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:33:21,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:33:21,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:21,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:33:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:21,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:33:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:21,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:33:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:21,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:33:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:21,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 01:33:21,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:21,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 01:33:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:21,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 01:33:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:21,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 01:33:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:21,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 01:33:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:21,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 01:33:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:21,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 01:33:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:21,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 01:33:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:21,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 01:33:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:21,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 01:33:21,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:21,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:33:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:21,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 01:33:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:21,417 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-18 01:33:21,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:33:21,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654940036] [2021-12-18 01:33:21,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654940036] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:33:21,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121363281] [2021-12-18 01:33:21,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:33:21,418 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:33:21,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:33:21,419 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:33:21,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-18 01:33:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:22,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 3201 conjuncts, 42 conjunts are in the unsatisfiable core [2021-12-18 01:33:22,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:33:22,736 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 01:33:22,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-18 01:33:22,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 01:33:22,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 01:33:23,000 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-18 01:33:23,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:33:23,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121363281] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:33:23,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:33:23,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 26 [2021-12-18 01:33:23,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174026457] [2021-12-18 01:33:23,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:33:23,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-18 01:33:23,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:33:23,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-18 01:33:23,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2021-12-18 01:33:23,002 INFO L87 Difference]: Start difference. First operand 10460 states and 15686 transitions. Second operand has 14 states, 14 states have (on average 8.071428571428571) internal successors, (113), 10 states have internal predecessors, (113), 4 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-18 01:33:30,871 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:33:32,883 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:33:34,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:33:36,918 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:33:38,927 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:33:40,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:33:42,957 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:33:45,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:33:45,365 INFO L93 Difference]: Finished difference Result 20983 states and 31455 transitions. [2021-12-18 01:33:45,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-18 01:33:45,366 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.071428571428571) internal successors, (113), 10 states have internal predecessors, (113), 4 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) Word has length 159 [2021-12-18 01:33:45,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:33:45,411 INFO L225 Difference]: With dead ends: 20983 [2021-12-18 01:33:45,412 INFO L226 Difference]: Without dead ends: 10520 [2021-12-18 01:33:45,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=1208, Unknown=0, NotChecked=0, Total=1332 [2021-12-18 01:33:45,453 INFO L933 BasicCegarLoop]: 1349 mSDtfsCounter, 104 mSDsluCounter, 8414 mSDsCounter, 0 mSdLazyCounter, 4095 mSolverCounterSat, 57 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 9763 SdHoareTripleChecker+Invalid, 4159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 4095 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2021-12-18 01:33:45,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 9763 Invalid, 4159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 4095 Invalid, 7 Unknown, 0 Unchecked, 21.6s Time] [2021-12-18 01:33:45,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10520 states. [2021-12-18 01:33:45,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10520 to 10515. [2021-12-18 01:33:45,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10515 states, 7841 states have (on average 1.280831526590996) internal successors, (10043), 8077 states have internal predecessors, (10043), 2024 states have call successors, (2024), 491 states have call predecessors, (2024), 649 states have return successors, (3685), 2021 states have call predecessors, (3685), 2020 states have call successors, (3685) [2021-12-18 01:33:45,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10515 states to 10515 states and 15752 transitions. [2021-12-18 01:33:45,838 INFO L78 Accepts]: Start accepts. Automaton has 10515 states and 15752 transitions. Word has length 159 [2021-12-18 01:33:45,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:33:45,839 INFO L470 AbstractCegarLoop]: Abstraction has 10515 states and 15752 transitions. [2021-12-18 01:33:45,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.071428571428571) internal successors, (113), 10 states have internal predecessors, (113), 4 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-18 01:33:45,839 INFO L276 IsEmpty]: Start isEmpty. Operand 10515 states and 15752 transitions. [2021-12-18 01:33:45,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-18 01:33:45,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:33:45,842 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-12-18 01:33:45,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-18 01:33:46,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-18 01:33:46,067 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:33:46,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:33:46,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1035056203, now seen corresponding path program 1 times [2021-12-18 01:33:46,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:33:46,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677930556] [2021-12-18 01:33:46,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:33:46,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:33:46,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:46,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:33:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:46,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:33:46,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:46,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:33:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:46,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:33:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:46,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 01:33:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:46,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 01:33:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:46,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 01:33:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:46,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 01:33:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:46,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 01:33:46,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:46,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 01:33:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:46,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 01:33:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:46,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 01:33:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:46,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 01:33:46,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:46,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 01:33:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:46,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:33:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:46,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 01:33:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:46,759 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-18 01:33:46,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:33:46,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677930556] [2021-12-18 01:33:46,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677930556] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:33:46,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430760294] [2021-12-18 01:33:46,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:33:46,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:33:46,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:33:46,761 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:33:46,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-18 01:33:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:33:47,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 3202 conjuncts, 50 conjunts are in the unsatisfiable core [2021-12-18 01:33:47,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:33:48,073 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 01:33:48,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-18 01:33:48,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 01:33:48,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 01:33:48,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 01:33:48,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 01:33:48,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 01:33:48,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 01:33:48,605 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-18 01:33:48,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 01:33:48,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430760294] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:33:48,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 01:33:48,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [17] total 31 [2021-12-18 01:33:48,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051175817] [2021-12-18 01:33:48,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:33:48,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-18 01:33:48,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:33:48,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-18 01:33:48,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2021-12-18 01:33:48,606 INFO L87 Difference]: Start difference. First operand 10515 states and 15752 transitions. Second operand has 17 states, 17 states have (on average 6.647058823529412) internal successors, (113), 13 states have internal predecessors, (113), 5 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) [2021-12-18 01:34:03,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:34:15,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:34:15,069 INFO L93 Difference]: Finished difference Result 54407 states and 87277 transitions. [2021-12-18 01:34:15,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-12-18 01:34:15,070 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.647058823529412) internal successors, (113), 13 states have internal predecessors, (113), 5 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) Word has length 159 [2021-12-18 01:34:15,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:34:15,306 INFO L225 Difference]: With dead ends: 54407 [2021-12-18 01:34:15,306 INFO L226 Difference]: Without dead ends: 43959 [2021-12-18 01:34:15,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=357, Invalid=4199, Unknown=0, NotChecked=0, Total=4556 [2021-12-18 01:34:15,403 INFO L933 BasicCegarLoop]: 1878 mSDtfsCounter, 4214 mSDsluCounter, 15246 mSDsCounter, 0 mSdLazyCounter, 18261 mSolverCounterSat, 1393 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4497 SdHoareTripleChecker+Valid, 17124 SdHoareTripleChecker+Invalid, 19655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1393 IncrementalHoareTripleChecker+Valid, 18261 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.8s IncrementalHoareTripleChecker+Time [2021-12-18 01:34:15,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4497 Valid, 17124 Invalid, 19655 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1393 Valid, 18261 Invalid, 1 Unknown, 0 Unchecked, 23.8s Time] [2021-12-18 01:34:15,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43959 states. [2021-12-18 01:34:17,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43959 to 40409. [2021-12-18 01:34:17,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40409 states, 30496 states have (on average 1.2833158447009443) internal successors, (39136), 31486 states have internal predecessors, (39136), 7148 states have call successors, (7148), 2096 states have call predecessors, (7148), 2764 states have return successors, (16341), 7046 states have call predecessors, (16341), 7144 states have call successors, (16341) [2021-12-18 01:34:17,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40409 states to 40409 states and 62625 transitions. [2021-12-18 01:34:17,427 INFO L78 Accepts]: Start accepts. Automaton has 40409 states and 62625 transitions. Word has length 159 [2021-12-18 01:34:17,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:34:17,427 INFO L470 AbstractCegarLoop]: Abstraction has 40409 states and 62625 transitions. [2021-12-18 01:34:17,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.647058823529412) internal successors, (113), 13 states have internal predecessors, (113), 5 states have call successors, (20), 5 states have call predecessors, (20), 7 states have return successors, (16), 7 states have call predecessors, (16), 5 states have call successors, (16) [2021-12-18 01:34:17,428 INFO L276 IsEmpty]: Start isEmpty. Operand 40409 states and 62625 transitions. [2021-12-18 01:34:17,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-18 01:34:17,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:34:17,433 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-12-18 01:34:17,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-18 01:34:17,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-18 01:34:17,648 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:34:17,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:34:17,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1988996361, now seen corresponding path program 1 times [2021-12-18 01:34:17,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:34:17,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608720849] [2021-12-18 01:34:17,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:34:17,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:34:17,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:17,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:34:17,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:17,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:34:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:18,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:34:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:18,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:34:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:18,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 01:34:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:18,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 01:34:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:18,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 01:34:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:18,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 01:34:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:18,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 01:34:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:18,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 01:34:18,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:18,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 01:34:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:18,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 01:34:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:18,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 01:34:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:18,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 01:34:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:18,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:34:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:18,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 01:34:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:18,173 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-18 01:34:18,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:34:18,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608720849] [2021-12-18 01:34:18,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608720849] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:34:18,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453002680] [2021-12-18 01:34:18,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:34:18,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:34:18,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:34:18,175 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:34:18,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-18 01:34:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:34:19,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 3203 conjuncts, 50 conjunts are in the unsatisfiable core [2021-12-18 01:34:19,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:34:19,428 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 01:34:19,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-18 01:34:19,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 01:34:20,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 01:34:20,042 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-18 01:34:20,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:34:20,118 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_12744 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec#1.base| v_ArrVal_12744) |c_~#debug~0.base|) |c_~#debug~0.offset|) 0)) is different from false [2021-12-18 01:34:20,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453002680] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:34:20,226 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 01:34:20,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33 [2021-12-18 01:34:20,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072893212] [2021-12-18 01:34:20,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 01:34:20,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-18 01:34:20,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:34:20,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-18 01:34:20,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=972, Unknown=1, NotChecked=62, Total=1122 [2021-12-18 01:34:20,230 INFO L87 Difference]: Start difference. First operand 40409 states and 62625 transitions. Second operand has 33 states, 33 states have (on average 6.484848484848484) internal successors, (214), 24 states have internal predecessors, (214), 13 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (32), 16 states have call predecessors, (32), 12 states have call successors, (32) [2021-12-18 01:34:45,545 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:35:17,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:35:17,658 INFO L93 Difference]: Finished difference Result 139394 states and 261373 transitions. [2021-12-18 01:35:17,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2021-12-18 01:35:17,658 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 6.484848484848484) internal successors, (214), 24 states have internal predecessors, (214), 13 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (32), 16 states have call predecessors, (32), 12 states have call successors, (32) Word has length 159 [2021-12-18 01:35:17,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:35:18,505 INFO L225 Difference]: With dead ends: 139394 [2021-12-18 01:35:18,505 INFO L226 Difference]: Without dead ends: 99117 [2021-12-18 01:35:18,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 259 SyntacticMatches, 1 SemanticMatches, 166 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 9190 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2068, Invalid=25657, Unknown=1, NotChecked=330, Total=28056 [2021-12-18 01:35:18,897 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 10320 mSDsluCounter, 28485 mSDsCounter, 0 mSdLazyCounter, 45582 mSolverCounterSat, 5035 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10552 SdHoareTripleChecker+Valid, 30150 SdHoareTripleChecker+Invalid, 50618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5035 IncrementalHoareTripleChecker+Valid, 45582 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.1s IncrementalHoareTripleChecker+Time [2021-12-18 01:35:18,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10552 Valid, 30150 Invalid, 50618 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5035 Valid, 45582 Invalid, 1 Unknown, 0 Unchecked, 48.1s Time] [2021-12-18 01:35:18,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99117 states. [2021-12-18 01:35:23,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99117 to 86042. [2021-12-18 01:35:23,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86042 states, 65758 states have (on average 1.2865202712977888) internal successors, (84599), 67854 states have internal predecessors, (84599), 13672 states have call successors, (13672), 4956 states have call predecessors, (13672), 6611 states have return successors, (48593), 13691 states have call predecessors, (48593), 13668 states have call successors, (48593) [2021-12-18 01:35:24,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86042 states to 86042 states and 146864 transitions. [2021-12-18 01:35:24,951 INFO L78 Accepts]: Start accepts. Automaton has 86042 states and 146864 transitions. Word has length 159 [2021-12-18 01:35:24,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:35:24,951 INFO L470 AbstractCegarLoop]: Abstraction has 86042 states and 146864 transitions. [2021-12-18 01:35:24,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 6.484848484848484) internal successors, (214), 24 states have internal predecessors, (214), 13 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (32), 16 states have call predecessors, (32), 12 states have call successors, (32) [2021-12-18 01:35:24,952 INFO L276 IsEmpty]: Start isEmpty. Operand 86042 states and 146864 transitions. [2021-12-18 01:35:24,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-18 01:35:24,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:35:24,960 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-12-18 01:35:24,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-18 01:35:25,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:35:25,176 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:35:25,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:35:25,176 INFO L85 PathProgramCache]: Analyzing trace with hash 968077822, now seen corresponding path program 1 times [2021-12-18 01:35:25,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:35:25,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609717061] [2021-12-18 01:35:25,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:35:25,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:35:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:35:25,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:35:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:35:25,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:35:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:35:25,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:35:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:35:25,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:35:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:35:25,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 01:35:25,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:35:25,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 01:35:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:35:25,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 01:35:25,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:35:25,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-18 01:35:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:35:25,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 01:35:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:35:25,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-18 01:35:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:35:25,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 01:35:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:35:25,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 01:35:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:35:25,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 01:35:25,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:35:25,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 01:35:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:35:25,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:35:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:35:25,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 01:35:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:35:25,991 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-18 01:35:25,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:35:25,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609717061] [2021-12-18 01:35:25,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609717061] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:35:25,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41705124] [2021-12-18 01:35:25,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:35:25,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:35:25,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 01:35:25,993 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 01:35:25,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-18 01:35:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:35:27,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 3218 conjuncts, 56 conjunts are in the unsatisfiable core [2021-12-18 01:35:27,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 01:35:27,389 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 01:35:27,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-18 01:35:27,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-18 01:35:28,081 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-12-18 01:35:28,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-12-18 01:35:28,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-18 01:35:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-18 01:35:28,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 01:35:30,186 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ttusb_dec_probe_#Ultimate.C_memset_#ptr#1.offset| Int) (|ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr742#1| Int) (|ttusb_dec_probe_#Ultimate.C_memset_#ptr#1.base| Int)) (= (select (select (store |c_#memory_int| |ttusb_dec_probe_#Ultimate.C_memset_#ptr#1.base| (store (select |c_#memory_int| |ttusb_dec_probe_#Ultimate.C_memset_#ptr#1.base|) (+ |ttusb_dec_probe_#Ultimate.C_memset_#ptr#1.offset| |ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr742#1|) |c_ttusb_dec_probe_#Ultimate.C_memset_#value#1|)) |c_~#debug~0.base|) |c_~#debug~0.offset|) 0)) is different from false [2021-12-18 01:35:32,193 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ttusb_dec_probe_#Ultimate.C_memset_#ptr#1.offset| Int) (|ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr742#1| Int) (|ttusb_dec_probe_#Ultimate.C_memset_#ptr#1.base| Int)) (= (select (select (store |c_#memory_int| |ttusb_dec_probe_#Ultimate.C_memset_#ptr#1.base| (store (select |c_#memory_int| |ttusb_dec_probe_#Ultimate.C_memset_#ptr#1.base|) (+ |ttusb_dec_probe_#Ultimate.C_memset_#ptr#1.offset| |ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr742#1|) 0)) |c_~#debug~0.base|) |c_~#debug~0.offset|) 0)) is different from false [2021-12-18 01:35:32,201 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ttusb_dec_probe_#Ultimate.C_memset_#ptr#1.offset| Int) (v_ArrVal_13645 (Array Int Int)) (|ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr742#1| Int) (|ttusb_dec_probe_#Ultimate.C_memset_#ptr#1.base| Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec#1.base| v_ArrVal_13645))) (store .cse0 |ttusb_dec_probe_#Ultimate.C_memset_#ptr#1.base| (store (select .cse0 |ttusb_dec_probe_#Ultimate.C_memset_#ptr#1.base|) (+ |ttusb_dec_probe_#Ultimate.C_memset_#ptr#1.offset| |ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr742#1|) 0))) |c_~#debug~0.base|) |c_~#debug~0.offset|) 0)) is different from false [2021-12-18 01:35:32,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41705124] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 01:35:32,285 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 01:35:32,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 35 [2021-12-18 01:35:32,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479222982] [2021-12-18 01:35:32,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 01:35:32,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-18 01:35:32,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:35:32,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-18 01:35:32,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1100, Unknown=3, NotChecked=204, Total=1406 [2021-12-18 01:35:32,287 INFO L87 Difference]: Start difference. First operand 86042 states and 146864 transitions. Second operand has 35 states, 35 states have (on average 6.171428571428572) internal successors, (216), 27 states have internal predecessors, (216), 14 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (32), 17 states have call predecessors, (32), 13 states have call successors, (32) [2021-12-18 01:36:02,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 01:36:41,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 01:36:41,774 INFO L93 Difference]: Finished difference Result 248878 states and 541595 transitions. [2021-12-18 01:36:41,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2021-12-18 01:36:41,774 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.171428571428572) internal successors, (216), 27 states have internal predecessors, (216), 14 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (32), 17 states have call predecessors, (32), 13 states have call successors, (32) Word has length 160 [2021-12-18 01:36:41,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 01:36:44,244 INFO L225 Difference]: With dead ends: 248878 [2021-12-18 01:36:44,245 INFO L226 Difference]: Without dead ends: 179331 [2021-12-18 01:36:45,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 258 SyntacticMatches, 3 SemanticMatches, 175 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 10047 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=2222, Invalid=27889, Unknown=3, NotChecked=1038, Total=31152 [2021-12-18 01:36:45,381 INFO L933 BasicCegarLoop]: 1677 mSDtfsCounter, 15510 mSDsluCounter, 28710 mSDsCounter, 0 mSdLazyCounter, 46263 mSolverCounterSat, 8258 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15746 SdHoareTripleChecker+Valid, 30387 SdHoareTripleChecker+Invalid, 54522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 8258 IncrementalHoareTripleChecker+Valid, 46263 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.5s IncrementalHoareTripleChecker+Time [2021-12-18 01:36:45,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15746 Valid, 30387 Invalid, 54522 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [8258 Valid, 46263 Invalid, 1 Unknown, 0 Unchecked, 52.5s Time] [2021-12-18 01:36:45,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179331 states. [2021-12-18 01:36:55,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179331 to 152896. [2021-12-18 01:36:55,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152896 states, 117430 states have (on average 1.2895171591586476) internal successors, (151428), 121121 states have internal predecessors, (151428), 23072 states have call successors, (23072), 9221 states have call predecessors, (23072), 12393 states have return successors, (114861), 23373 states have call predecessors, (114861), 23068 states have call successors, (114861) [2021-12-18 01:36:58,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152896 states to 152896 states and 289361 transitions. [2021-12-18 01:36:58,573 INFO L78 Accepts]: Start accepts. Automaton has 152896 states and 289361 transitions. Word has length 160 [2021-12-18 01:36:58,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 01:36:58,574 INFO L470 AbstractCegarLoop]: Abstraction has 152896 states and 289361 transitions. [2021-12-18 01:36:58,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 6.171428571428572) internal successors, (216), 27 states have internal predecessors, (216), 14 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (32), 17 states have call predecessors, (32), 13 states have call successors, (32) [2021-12-18 01:36:58,574 INFO L276 IsEmpty]: Start isEmpty. Operand 152896 states and 289361 transitions. [2021-12-18 01:36:58,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-18 01:36:58,583 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 01:36:58,583 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 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] [2021-12-18 01:36:58,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-18 01:36:58,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 01:36:58,796 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 01:36:58,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 01:36:58,796 INFO L85 PathProgramCache]: Analyzing trace with hash -124428288, now seen corresponding path program 1 times [2021-12-18 01:36:58,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 01:36:58,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958969003] [2021-12-18 01:36:58,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 01:36:58,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 01:36:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:58,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 01:36:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:58,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 01:36:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:58,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:36:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:58,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 01:36:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:58,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 01:36:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:58,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-18 01:36:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:58,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 01:36:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:58,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 01:36:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:58,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 01:36:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:58,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-18 01:36:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:58,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 01:36:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:59,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 01:36:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:59,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 01:36:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:59,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 01:36:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:59,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 01:36:59,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:59,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 01:36:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:59,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-18 01:36:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 01:36:59,043 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-18 01:36:59,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 01:36:59,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958969003] [2021-12-18 01:36:59,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958969003] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 01:36:59,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 01:36:59,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 01:36:59,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007029987] [2021-12-18 01:36:59,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 01:36:59,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 01:36:59,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 01:36:59,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 01:36:59,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-18 01:36:59,045 INFO L87 Difference]: Start difference. First operand 152896 states and 289361 transitions. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (21), 5 states have call predecessors, (21), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-18 01:37:03,392 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []