./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.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-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 04:01:02,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 04:01:02,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 04:01:02,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 04:01:02,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 04:01:02,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 04:01:02,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 04:01:02,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 04:01:02,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 04:01:02,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 04:01:02,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 04:01:02,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 04:01:02,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 04:01:02,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 04:01:02,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 04:01:02,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 04:01:02,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 04:01:02,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 04:01:02,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 04:01:02,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 04:01:02,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 04:01:02,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 04:01:02,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 04:01:02,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 04:01:02,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 04:01:02,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 04:01:02,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 04:01:02,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 04:01:02,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 04:01:02,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 04:01:02,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 04:01:02,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 04:01:02,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 04:01:02,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 04:01:02,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 04:01:02,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 04:01:02,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 04:01:02,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 04:01:02,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 04:01:02,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 04:01:02,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 04:01:02,523 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 04:01:02,544 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 04:01:02,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 04:01:02,547 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 04:01:02,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 04:01:02,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 04:01:02,547 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 04:01:02,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 04:01:02,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 04:01:02,548 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 04:01:02,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 04:01:02,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 04:01:02,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 04:01:02,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 04:01:02,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 04:01:02,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 04:01:02,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 04:01:02,550 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 04:01:02,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 04:01:02,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 04:01:02,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 04:01:02,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 04:01:02,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 04:01:02,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 04:01:02,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 04:01:02,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 04:01:02,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 04:01:02,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 04:01:02,551 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 04:01:02,551 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 04:01:02,552 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 04:01:02,552 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 04:01:02,552 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a18a7daf593dd77ad555545ec10f677585469ecf569b445600fb5f502940bb67 [2021-12-18 04:01:02,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 04:01:02,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 04:01:02,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 04:01:02,735 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 04:01:02,735 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 04:01:02,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2021-12-18 04:01:02,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be38e78ca/4cbb82e2f10340f2854b53ca372b2820/FLAG9d79baead [2021-12-18 04:01:03,302 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 04:01:03,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2021-12-18 04:01:03,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be38e78ca/4cbb82e2f10340f2854b53ca372b2820/FLAG9d79baead [2021-12-18 04:01:03,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be38e78ca/4cbb82e2f10340f2854b53ca372b2820 [2021-12-18 04:01:03,825 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 04:01:03,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 04:01:03,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 04:01:03,828 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 04:01:03,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 04:01:03,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 04:01:03" (1/1) ... [2021-12-18 04:01:03,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b2e00de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:01:03, skipping insertion in model container [2021-12-18 04:01:03,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 04:01:03" (1/1) ... [2021-12-18 04:01:03,836 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 04:01:03,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 04:01:04,450 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2021-12-18 04:01:04,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 04:01:04,797 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 04:01:04,900 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i[161211,161224] [2021-12-18 04:01:04,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 04:01:05,059 INFO L208 MainTranslator]: Completed translation [2021-12-18 04:01:05,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:01:05 WrapperNode [2021-12-18 04:01:05,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 04:01:05,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 04:01:05,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 04:01:05,062 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 04:01:05,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:01:05" (1/1) ... [2021-12-18 04:01:05,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:01:05" (1/1) ... [2021-12-18 04:01:05,172 INFO L137 Inliner]: procedures = 199, calls = 723, calls flagged for inlining = 106, calls inlined = 103, statements flattened = 2213 [2021-12-18 04:01:05,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 04:01:05,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 04:01:05,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 04:01:05,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 04:01:05,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:01:05" (1/1) ... [2021-12-18 04:01:05,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:01:05" (1/1) ... [2021-12-18 04:01:05,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:01:05" (1/1) ... [2021-12-18 04:01:05,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:01:05" (1/1) ... [2021-12-18 04:01:05,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:01:05" (1/1) ... [2021-12-18 04:01:05,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:01:05" (1/1) ... [2021-12-18 04:01:05,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:01:05" (1/1) ... [2021-12-18 04:01:05,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 04:01:05,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 04:01:05,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 04:01:05,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 04:01:05,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:01:05" (1/1) ... [2021-12-18 04:01:05,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 04:01:05,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:01:05,327 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 04:01:05,345 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 04:01:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 04:01:05,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 04:01:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-12-18 04:01:05,361 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-12-18 04:01:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 04:01:05,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 04:01:05,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 04:01:05,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 04:01:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure setup_descriptors [2021-12-18 04:01:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_descriptors [2021-12-18 04:01:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2021-12-18 04:01:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2021-12-18 04:01:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure disable_all_interrupts [2021-12-18 04:01:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_all_interrupts [2021-12-18 04:01:05,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 04:01:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 04:01:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure xircom_interrupt [2021-12-18 04:01:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure xircom_interrupt [2021-12-18 04:01:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-18 04:01:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-18 04:01:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 04:01:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 04:01:05,363 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-12-18 04:01:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-12-18 04:01:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-18 04:01:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-18 04:01:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-18 04:01:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-18 04:01:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure investigate_write_descriptor [2021-12-18 04:01:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure investigate_write_descriptor [2021-12-18 04:01:05,364 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2021-12-18 04:01:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2021-12-18 04:01:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 04:01:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-12-18 04:01:05,365 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-12-18 04:01:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 04:01:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2021-12-18 04:01:05,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2021-12-18 04:01:05,365 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-12-18 04:01:05,365 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-12-18 04:01:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-12-18 04:01:05,366 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-12-18 04:01:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-18 04:01:05,366 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-18 04:01:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 04:01:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 04:01:05,366 INFO L130 BoogieDeclarations]: Found specification of procedure investigate_read_descriptor [2021-12-18 04:01:05,366 INFO L138 BoogieDeclarations]: Found implementation of procedure investigate_read_descriptor [2021-12-18 04:01:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-18 04:01:05,367 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-18 04:01:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2021-12-18 04:01:05,367 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2021-12-18 04:01:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-18 04:01:05,368 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-18 04:01:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-18 04:01:05,368 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-18 04:01:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-18 04:01:05,369 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-18 04:01:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_transmit [2021-12-18 04:01:05,370 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_transmit [2021-12-18 04:01:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 04:01:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-18 04:01:05,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-18 04:01:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_dword [2021-12-18 04:01:05,370 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_dword [2021-12-18 04:01:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-18 04:01:05,370 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-18 04:01:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 04:01:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-12-18 04:01:05,371 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-12-18 04:01:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 04:01:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-18 04:01:05,372 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-18 04:01:05,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-18 04:01:05,395 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-18 04:01:05,395 INFO L130 BoogieDeclarations]: Found specification of procedure xircom_poll_controller [2021-12-18 04:01:05,395 INFO L138 BoogieDeclarations]: Found implementation of procedure xircom_poll_controller [2021-12-18 04:01:05,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 04:01:05,396 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-18 04:01:05,396 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-18 04:01:05,396 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 04:01:05,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 04:01:05,396 INFO L130 BoogieDeclarations]: Found specification of procedure receive_active [2021-12-18 04:01:05,396 INFO L138 BoogieDeclarations]: Found implementation of procedure receive_active [2021-12-18 04:01:05,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 04:01:05,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 04:01:05,396 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-18 04:01:05,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-18 04:01:05,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 04:01:05,397 INFO L130 BoogieDeclarations]: Found specification of procedure transmit_active [2021-12-18 04:01:05,397 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit_active [2021-12-18 04:01:05,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-18 04:01:05,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-18 04:01:05,397 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_receive [2021-12-18 04:01:05,397 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_receive [2021-12-18 04:01:05,397 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-12-18 04:01:05,397 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-12-18 04:01:05,398 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-18 04:01:05,398 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-18 04:01:05,398 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-12-18 04:01:05,398 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-12-18 04:01:05,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 04:01:05,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 04:01:05,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 04:01:05,785 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 04:01:05,789 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 04:01:05,960 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 04:01:06,914 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 04:01:06,928 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 04:01:06,929 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-18 04:01:06,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 04:01:06 BoogieIcfgContainer [2021-12-18 04:01:06,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 04:01:06,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 04:01:06,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 04:01:06,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 04:01:06,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 04:01:03" (1/3) ... [2021-12-18 04:01:06,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b7de51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 04:01:06, skipping insertion in model container [2021-12-18 04:01:06,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 04:01:05" (2/3) ... [2021-12-18 04:01:06,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b7de51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 04:01:06, skipping insertion in model container [2021-12-18 04:01:06,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 04:01:06" (3/3) ... [2021-12-18 04:01:06,942 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--ethernet--dec--tulip--xircom_cb.ko-entry_point.cil.out.i [2021-12-18 04:01:06,946 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 04:01:06,947 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 04:01:06,997 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 04:01:07,008 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 04:01:07,009 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 04:01:07,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 798 states, 554 states have (on average 1.3068592057761732) internal successors, (724), 569 states have internal predecessors, (724), 199 states have call successors, (199), 44 states have call predecessors, (199), 43 states have return successors, (193), 192 states have call predecessors, (193), 193 states have call successors, (193) [2021-12-18 04:01:07,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-18 04:01:07,053 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:01:07,054 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:01:07,054 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:01:07,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:01:07,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1359452381, now seen corresponding path program 1 times [2021-12-18 04:01:07,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:01:07,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609235869] [2021-12-18 04:01:07,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:07,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:01:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:07,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:01:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:07,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:07,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:07,417 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-18 04:01:07,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:01:07,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609235869] [2021-12-18 04:01:07,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609235869] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:01:07,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:01:07,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 04:01:07,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437824648] [2021-12-18 04:01:07,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:01:07,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 04:01:07,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:01:07,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 04:01:07,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 04:01:07,443 INFO L87 Difference]: Start difference. First operand has 798 states, 554 states have (on average 1.3068592057761732) internal successors, (724), 569 states have internal predecessors, (724), 199 states have call successors, (199), 44 states have call predecessors, (199), 43 states have return successors, (193), 192 states have call predecessors, (193), 193 states have call successors, (193) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 04:01:09,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:01:09,341 INFO L93 Difference]: Finished difference Result 2457 states and 3514 transitions. [2021-12-18 04:01:09,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 04:01:09,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2021-12-18 04:01:09,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:01:09,371 INFO L225 Difference]: With dead ends: 2457 [2021-12-18 04:01:09,372 INFO L226 Difference]: Without dead ends: 1638 [2021-12-18 04:01:09,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 04:01:09,383 INFO L933 BasicCegarLoop]: 1236 mSDtfsCounter, 1340 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-18 04:01:09,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1520 Valid, 2575 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-18 04:01:09,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2021-12-18 04:01:09,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1540. [2021-12-18 04:01:09,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1074 states have (on average 1.2793296089385475) internal successors, (1374), 1088 states have internal predecessors, (1374), 381 states have call successors, (381), 85 states have call predecessors, (381), 84 states have return successors, (380), 378 states have call predecessors, (380), 380 states have call successors, (380) [2021-12-18 04:01:09,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2135 transitions. [2021-12-18 04:01:09,539 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2135 transitions. Word has length 35 [2021-12-18 04:01:09,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:01:09,540 INFO L470 AbstractCegarLoop]: Abstraction has 1540 states and 2135 transitions. [2021-12-18 04:01:09,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 04:01:09,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2135 transitions. [2021-12-18 04:01:09,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-18 04:01:09,547 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:01:09,547 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:01:09,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 04:01:09,548 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:01:09,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:01:09,549 INFO L85 PathProgramCache]: Analyzing trace with hash -241261671, now seen corresponding path program 1 times [2021-12-18 04:01:09,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:01:09,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564665048] [2021-12-18 04:01:09,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:09,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:01:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:01:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:09,649 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-18 04:01:09,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:01:09,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564665048] [2021-12-18 04:01:09,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564665048] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:01:09,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:01:09,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 04:01:09,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323672824] [2021-12-18 04:01:09,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:01:09,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 04:01:09,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:01:09,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 04:01:09,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 04:01:09,652 INFO L87 Difference]: Start difference. First operand 1540 states and 2135 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 04:01:11,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:01:11,559 INFO L93 Difference]: Finished difference Result 4789 states and 6734 transitions. [2021-12-18 04:01:11,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 04:01:11,560 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2021-12-18 04:01:11,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:01:11,573 INFO L225 Difference]: With dead ends: 4789 [2021-12-18 04:01:11,573 INFO L226 Difference]: Without dead ends: 3254 [2021-12-18 04:01:11,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-18 04:01:11,579 INFO L933 BasicCegarLoop]: 1226 mSDtfsCounter, 1307 mSDsluCounter, 3445 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 4671 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 489 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-18 04:01:11,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1484 Valid, 4671 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [489 Valid, 1263 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-18 04:01:11,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2021-12-18 04:01:11,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3086. [2021-12-18 04:01:11,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3086 states, 2151 states have (on average 1.2794049279404929) internal successors, (2752), 2183 states have internal predecessors, (2752), 758 states have call successors, (758), 169 states have call predecessors, (758), 176 states have return successors, (802), 755 states have call predecessors, (802), 757 states have call successors, (802) [2021-12-18 04:01:11,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3086 states to 3086 states and 4312 transitions. [2021-12-18 04:01:11,684 INFO L78 Accepts]: Start accepts. Automaton has 3086 states and 4312 transitions. Word has length 38 [2021-12-18 04:01:11,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:01:11,685 INFO L470 AbstractCegarLoop]: Abstraction has 3086 states and 4312 transitions. [2021-12-18 04:01:11,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-18 04:01:11,685 INFO L276 IsEmpty]: Start isEmpty. Operand 3086 states and 4312 transitions. [2021-12-18 04:01:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-18 04:01:11,692 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:01:11,692 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:01:11,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 04:01:11,692 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:01:11,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:01:11,693 INFO L85 PathProgramCache]: Analyzing trace with hash -832829450, now seen corresponding path program 1 times [2021-12-18 04:01:11,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:01:11,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490070280] [2021-12-18 04:01:11,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:11,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:01:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:11,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:01:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:11,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:11,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:11,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:01:11,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:11,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:11,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:11,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 04:01:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:11,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:11,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:11,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:11,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 04:01:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:11,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 04:01:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:11,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:01:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:11,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:11,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 04:01:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:11,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:11,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:11,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-18 04:01:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:11,932 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-18 04:01:11,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:01:11,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490070280] [2021-12-18 04:01:11,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490070280] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:01:11,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 04:01:11,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 04:01:11,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773867185] [2021-12-18 04:01:11,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:01:11,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 04:01:11,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:01:11,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 04:01:11,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-18 04:01:11,935 INFO L87 Difference]: Start difference. First operand 3086 states and 4312 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 04:01:13,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:01:13,690 INFO L93 Difference]: Finished difference Result 8394 states and 11721 transitions. [2021-12-18 04:01:13,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 04:01:13,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 143 [2021-12-18 04:01:13,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:01:13,710 INFO L225 Difference]: With dead ends: 8394 [2021-12-18 04:01:13,711 INFO L226 Difference]: Without dead ends: 5318 [2021-12-18 04:01:13,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-18 04:01:13,721 INFO L933 BasicCegarLoop]: 1084 mSDtfsCounter, 1359 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 714 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 3235 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 714 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-18 04:01:13,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1466 Valid, 3235 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [714 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-18 04:01:13,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5318 states. [2021-12-18 04:01:13,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5318 to 4930. [2021-12-18 04:01:13,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4930 states, 3493 states have (on average 1.2719725164614943) internal successors, (4443), 3561 states have internal predecessors, (4443), 1108 states have call successors, (1108), 309 states have call predecessors, (1108), 328 states have return successors, (1187), 1095 states have call predecessors, (1187), 1107 states have call successors, (1187) [2021-12-18 04:01:13,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4930 states to 4930 states and 6738 transitions. [2021-12-18 04:01:13,872 INFO L78 Accepts]: Start accepts. Automaton has 4930 states and 6738 transitions. Word has length 143 [2021-12-18 04:01:13,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:01:13,873 INFO L470 AbstractCegarLoop]: Abstraction has 4930 states and 6738 transitions. [2021-12-18 04:01:13,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 04:01:13,873 INFO L276 IsEmpty]: Start isEmpty. Operand 4930 states and 6738 transitions. [2021-12-18 04:01:13,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-18 04:01:13,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:01:13,877 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-18 04:01:13,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 04:01:13,877 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:01:13,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:01:13,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1350491809, now seen corresponding path program 1 times [2021-12-18 04:01:13,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:01:13,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122588925] [2021-12-18 04:01:13,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:13,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:01:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:13,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:01:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:13,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:13,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:13,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-18 04:01:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:13,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:01:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:14,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:14,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:14,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:14,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 04:01:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:14,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 04:01:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:14,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 04:01:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:14,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:01:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:14,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:14,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:14,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 04:01:14,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:14,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:14,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 04:01:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:14,147 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-18 04:01:14,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:01:14,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122588925] [2021-12-18 04:01:14,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122588925] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:01:14,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635393072] [2021-12-18 04:01:14,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:14,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:01:14,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:01:14,150 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 04:01:14,152 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 04:01:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:14,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 04:01:14,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:01:14,788 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-18 04:01:14,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 04:01:14,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635393072] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:01:14,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 04:01:14,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2021-12-18 04:01:14,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419149648] [2021-12-18 04:01:14,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:01:14,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:01:14,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:01:14,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:01:14,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-18 04:01:14,791 INFO L87 Difference]: Start difference. First operand 4930 states and 6738 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 04:01:15,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:01:15,566 INFO L93 Difference]: Finished difference Result 14778 states and 20208 transitions. [2021-12-18 04:01:15,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 04:01:15,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 139 [2021-12-18 04:01:15,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:01:15,607 INFO L225 Difference]: With dead ends: 14778 [2021-12-18 04:01:15,608 INFO L226 Difference]: Without dead ends: 9858 [2021-12-18 04:01:15,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-12-18 04:01:15,626 INFO L933 BasicCegarLoop]: 1365 mSDtfsCounter, 986 mSDsluCounter, 2729 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 4094 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-18 04:01:15,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [990 Valid, 4094 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-18 04:01:15,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9858 states. [2021-12-18 04:01:15,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9858 to 9850. [2021-12-18 04:01:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9850 states, 6977 states have (on average 1.2723233481439014) internal successors, (8877), 7117 states have internal predecessors, (8877), 2212 states have call successors, (2212), 617 states have call predecessors, (2212), 660 states have return successors, (2375), 2187 states have call predecessors, (2375), 2211 states have call successors, (2375) [2021-12-18 04:01:15,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9850 states to 9850 states and 13464 transitions. [2021-12-18 04:01:15,985 INFO L78 Accepts]: Start accepts. Automaton has 9850 states and 13464 transitions. Word has length 139 [2021-12-18 04:01:15,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:01:15,987 INFO L470 AbstractCegarLoop]: Abstraction has 9850 states and 13464 transitions. [2021-12-18 04:01:15,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 04:01:15,988 INFO L276 IsEmpty]: Start isEmpty. Operand 9850 states and 13464 transitions. [2021-12-18 04:01:15,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-18 04:01:15,991 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:01:15,991 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:01:16,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-18 04:01:16,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:01:16,213 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:01:16,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:01:16,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1890485240, now seen corresponding path program 1 times [2021-12-18 04:01:16,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:01:16,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777995450] [2021-12-18 04:01:16,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:16,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:01:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:16,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:01:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:16,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:16,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:16,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 04:01:16,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:16,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:01:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:16,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:16,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:16,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:16,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:16,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 04:01:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:16,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 04:01:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:16,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 04:01:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:16,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:01:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:16,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:16,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 04:01:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:16,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:16,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 04:01:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:16,493 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-18 04:01:16,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:01:16,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777995450] [2021-12-18 04:01:16,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777995450] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:01:16,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317271144] [2021-12-18 04:01:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:16,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:01:16,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:01:16,495 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 04:01:16,519 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 04:01:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:16,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 04:01:16,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:01:17,170 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-18 04:01:17,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 04:01:17,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317271144] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:01:17,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 04:01:17,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2021-12-18 04:01:17,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694372534] [2021-12-18 04:01:17,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:01:17,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:01:17,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:01:17,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:01:17,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-18 04:01:17,171 INFO L87 Difference]: Start difference. First operand 9850 states and 13464 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 04:01:18,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:01:18,156 INFO L93 Difference]: Finished difference Result 29538 states and 40386 transitions. [2021-12-18 04:01:18,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 04:01:18,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 137 [2021-12-18 04:01:18,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:01:18,243 INFO L225 Difference]: With dead ends: 29538 [2021-12-18 04:01:18,243 INFO L226 Difference]: Without dead ends: 19698 [2021-12-18 04:01:18,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-12-18 04:01:18,279 INFO L933 BasicCegarLoop]: 1365 mSDtfsCounter, 978 mSDsluCounter, 2732 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 4097 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 04:01:18,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [982 Valid, 4097 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 04:01:18,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19698 states. [2021-12-18 04:01:18,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19698 to 19690. [2021-12-18 04:01:18,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19690 states, 13945 states have (on average 1.2724991036213698) internal successors, (17745), 14229 states have internal predecessors, (17745), 4420 states have call successors, (4420), 1233 states have call predecessors, (4420), 1324 states have return successors, (4739), 4371 states have call predecessors, (4739), 4419 states have call successors, (4739) [2021-12-18 04:01:18,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19690 states to 19690 states and 26904 transitions. [2021-12-18 04:01:18,918 INFO L78 Accepts]: Start accepts. Automaton has 19690 states and 26904 transitions. Word has length 137 [2021-12-18 04:01:18,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:01:18,919 INFO L470 AbstractCegarLoop]: Abstraction has 19690 states and 26904 transitions. [2021-12-18 04:01:18,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 04:01:18,919 INFO L276 IsEmpty]: Start isEmpty. Operand 19690 states and 26904 transitions. [2021-12-18 04:01:18,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-18 04:01:18,923 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:01:18,923 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-18 04:01:18,941 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-18 04:01:19,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:01:19,142 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:01:19,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:01:19,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1553717310, now seen corresponding path program 1 times [2021-12-18 04:01:19,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:01:19,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696498822] [2021-12-18 04:01:19,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:19,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:01:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:01:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:01:19,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:01:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 04:01:19,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 04:01:19,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 04:01:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:01:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:19,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 04:01:19,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 04:01:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,390 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-18 04:01:19,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:01:19,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696498822] [2021-12-18 04:01:19,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696498822] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:01:19,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728516984] [2021-12-18 04:01:19,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:19,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:01:19,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:01:19,393 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 04:01:19,394 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 04:01:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:19,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 04:01:19,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:01:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-18 04:01:20,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 04:01:20,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728516984] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:01:20,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 04:01:20,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2021-12-18 04:01:20,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666368648] [2021-12-18 04:01:20,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:01:20,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:01:20,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:01:20,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:01:20,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-18 04:01:20,083 INFO L87 Difference]: Start difference. First operand 19690 states and 26904 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 04:01:21,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:01:21,411 INFO L93 Difference]: Finished difference Result 59058 states and 80706 transitions. [2021-12-18 04:01:21,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 04:01:21,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2021-12-18 04:01:21,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:01:21,559 INFO L225 Difference]: With dead ends: 59058 [2021-12-18 04:01:21,559 INFO L226 Difference]: Without dead ends: 39378 [2021-12-18 04:01:21,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-12-18 04:01:21,620 INFO L933 BasicCegarLoop]: 1258 mSDtfsCounter, 987 mSDsluCounter, 2433 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 3691 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 04:01:21,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [991 Valid, 3691 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 04:01:21,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39378 states. [2021-12-18 04:01:22,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39378 to 39370. [2021-12-18 04:01:22,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39370 states, 27881 states have (on average 1.2725870664610308) internal successors, (35481), 28453 states have internal predecessors, (35481), 8836 states have call successors, (8836), 2465 states have call predecessors, (8836), 2652 states have return successors, (9443), 8739 states have call predecessors, (9443), 8835 states have call successors, (9443) [2021-12-18 04:01:22,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39370 states to 39370 states and 53760 transitions. [2021-12-18 04:01:22,990 INFO L78 Accepts]: Start accepts. Automaton has 39370 states and 53760 transitions. Word has length 138 [2021-12-18 04:01:22,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:01:22,992 INFO L470 AbstractCegarLoop]: Abstraction has 39370 states and 53760 transitions. [2021-12-18 04:01:22,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 04:01:22,992 INFO L276 IsEmpty]: Start isEmpty. Operand 39370 states and 53760 transitions. [2021-12-18 04:01:22,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-18 04:01:22,996 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:01:22,996 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-18 04:01:23,015 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 04:01:23,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:01:23,211 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:01:23,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:01:23,212 INFO L85 PathProgramCache]: Analyzing trace with hash -741737467, now seen corresponding path program 1 times [2021-12-18 04:01:23,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:01:23,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981879487] [2021-12-18 04:01:23,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:23,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:01:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:23,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:01:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:23,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:23,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:23,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:01:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:23,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:01:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:23,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:23,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:23,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:23,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 04:01:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:23,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 04:01:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:23,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 04:01:23,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:23,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:01:23,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:23,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:23,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 04:01:23,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:23,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:23,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:23,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 04:01:23,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:23,408 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-18 04:01:23,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:01:23,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981879487] [2021-12-18 04:01:23,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981879487] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:01:23,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837785538] [2021-12-18 04:01:23,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:23,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:01:23,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:01:23,410 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 04:01:23,411 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 04:01:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:23,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 04:01:23,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:01:24,004 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-18 04:01:24,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 04:01:24,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837785538] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 04:01:24,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 04:01:24,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2021-12-18 04:01:24,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2246699] [2021-12-18 04:01:24,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 04:01:24,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 04:01:24,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:01:24,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 04:01:24,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-18 04:01:24,008 INFO L87 Difference]: Start difference. First operand 39370 states and 53760 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 04:01:25,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:01:25,996 INFO L93 Difference]: Finished difference Result 118098 states and 161274 transitions. [2021-12-18 04:01:25,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 04:01:25,997 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2021-12-18 04:01:25,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:01:26,512 INFO L225 Difference]: With dead ends: 118098 [2021-12-18 04:01:26,512 INFO L226 Difference]: Without dead ends: 78174 [2021-12-18 04:01:26,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-12-18 04:01:26,618 INFO L933 BasicCegarLoop]: 1303 mSDtfsCounter, 985 mSDsluCounter, 2655 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 3958 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 04:01:26,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [989 Valid, 3958 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 04:01:26,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78174 states. [2021-12-18 04:01:28,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78174 to 77908. [2021-12-18 04:01:28,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77908 states, 55063 states have (on average 1.2739044367361023) internal successors, (70145), 56451 states have internal predecessors, (70145), 17590 states have call successors, (17590), 4891 states have call predecessors, (17590), 5254 states have return successors, (18706), 17139 states have call predecessors, (18706), 17589 states have call successors, (18706) [2021-12-18 04:01:29,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77908 states to 77908 states and 106441 transitions. [2021-12-18 04:01:29,136 INFO L78 Accepts]: Start accepts. Automaton has 77908 states and 106441 transitions. Word has length 136 [2021-12-18 04:01:29,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:01:29,136 INFO L470 AbstractCegarLoop]: Abstraction has 77908 states and 106441 transitions. [2021-12-18 04:01:29,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-18 04:01:29,137 INFO L276 IsEmpty]: Start isEmpty. Operand 77908 states and 106441 transitions. [2021-12-18 04:01:29,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-18 04:01:29,142 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:01:29,142 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:01:29,168 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 04:01:29,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:01:29,355 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:01:29,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:01:29,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1817425076, now seen corresponding path program 1 times [2021-12-18 04:01:29,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:01:29,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874659141] [2021-12-18 04:01:29,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:29,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:01:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:29,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:01:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:29,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:29,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:29,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 04:01:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:29,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:01:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:29,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:01:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:29,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:29,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:29,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:29,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 04:01:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:29,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 04:01:29,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:29,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 04:01:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:29,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:01:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:29,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:29,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 04:01:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:29,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:29,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 04:01:29,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:29,646 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-18 04:01:29,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:01:29,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874659141] [2021-12-18 04:01:29,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874659141] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:01:29,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949805365] [2021-12-18 04:01:29,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:29,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:01:29,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:01:29,651 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 04:01:29,653 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 04:01:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:30,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 1507 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 04:01:30,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:01:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-18 04:01:30,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 04:01:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-18 04:01:30,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949805365] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 04:01:30,622 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 04:01:30,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 20 [2021-12-18 04:01:30,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552495814] [2021-12-18 04:01:30,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 04:01:30,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-18 04:01:30,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:01:30,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-18 04:01:30,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2021-12-18 04:01:30,624 INFO L87 Difference]: Start difference. First operand 77908 states and 106441 transitions. Second operand has 20 states, 20 states have (on average 10.0) internal successors, (200), 14 states have internal predecessors, (200), 7 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (39), 9 states have call predecessors, (39), 7 states have call successors, (39) [2021-12-18 04:01:40,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:01:40,289 INFO L93 Difference]: Finished difference Result 231100 states and 326264 transitions. [2021-12-18 04:01:40,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-18 04:01:40,290 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.0) internal successors, (200), 14 states have internal predecessors, (200), 7 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (39), 9 states have call predecessors, (39), 7 states have call successors, (39) Word has length 148 [2021-12-18 04:01:40,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:01:41,156 INFO L225 Difference]: With dead ends: 231100 [2021-12-18 04:01:41,156 INFO L226 Difference]: Without dead ends: 152356 [2021-12-18 04:01:41,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=283, Invalid=1523, Unknown=0, NotChecked=0, Total=1806 [2021-12-18 04:01:41,364 INFO L933 BasicCegarLoop]: 1917 mSDtfsCounter, 1861 mSDsluCounter, 19455 mSDsCounter, 0 mSdLazyCounter, 8614 mSolverCounterSat, 614 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2234 SdHoareTripleChecker+Valid, 21372 SdHoareTripleChecker+Invalid, 9228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 614 IncrementalHoareTripleChecker+Valid, 8614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-12-18 04:01:41,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2234 Valid, 21372 Invalid, 9228 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [614 Valid, 8614 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-12-18 04:01:41,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152356 states. [2021-12-18 04:01:45,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152356 to 121074. [2021-12-18 04:01:45,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121074 states, 85493 states have (on average 1.262150117553484) internal successors, (107905), 87965 states have internal predecessors, (107905), 27232 states have call successors, (27232), 7309 states have call predecessors, (27232), 8348 states have return successors, (30817), 26659 states have call predecessors, (30817), 27231 states have call successors, (30817) [2021-12-18 04:01:45,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121074 states to 121074 states and 165954 transitions. [2021-12-18 04:01:46,014 INFO L78 Accepts]: Start accepts. Automaton has 121074 states and 165954 transitions. Word has length 148 [2021-12-18 04:01:46,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:01:46,015 INFO L470 AbstractCegarLoop]: Abstraction has 121074 states and 165954 transitions. [2021-12-18 04:01:46,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.0) internal successors, (200), 14 states have internal predecessors, (200), 7 states have call successors, (41), 7 states have call predecessors, (41), 7 states have return successors, (39), 9 states have call predecessors, (39), 7 states have call successors, (39) [2021-12-18 04:01:46,015 INFO L276 IsEmpty]: Start isEmpty. Operand 121074 states and 165954 transitions. [2021-12-18 04:01:46,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-18 04:01:46,021 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:01:46,022 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 04:01:46,041 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 04:01:46,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:01:46,241 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:01:46,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:01:46,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2146025886, now seen corresponding path program 1 times [2021-12-18 04:01:46,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:01:46,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2714032] [2021-12-18 04:01:46,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:46,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:01:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:46,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:01:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:46,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:46,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:46,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 04:01:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:46,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 04:01:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:46,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:01:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:46,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:46,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:01:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:46,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:01:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:46,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 04:01:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:46,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 04:01:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:46,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:01:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:46,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 04:01:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:46,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 04:01:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:46,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:01:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:46,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:46,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 04:01:46,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:46,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:01:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:46,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 04:01:46,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:46,687 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-18 04:01:46,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:01:46,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2714032] [2021-12-18 04:01:46,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2714032] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:01:46,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425529080] [2021-12-18 04:01:46,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:01:46,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:01:46,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:01:46,689 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 04:01:46,732 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 04:01:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:01:47,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 04:01:47,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:01:47,618 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-18 04:01:47,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 04:01:48,007 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-18 04:01:48,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425529080] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 04:01:48,008 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 04:01:48,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 22 [2021-12-18 04:01:48,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607765269] [2021-12-18 04:01:48,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 04:01:48,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-18 04:01:48,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:01:48,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-18 04:01:48,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2021-12-18 04:01:48,009 INFO L87 Difference]: Start difference. First operand 121074 states and 165954 transitions. Second operand has 22 states, 22 states have (on average 9.772727272727273) internal successors, (215), 15 states have internal predecessors, (215), 7 states have call successors, (43), 7 states have call predecessors, (43), 8 states have return successors, (41), 9 states have call predecessors, (41), 7 states have call successors, (41) [2021-12-18 04:02:03,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 04:02:03,498 INFO L93 Difference]: Finished difference Result 314322 states and 441753 transitions. [2021-12-18 04:02:03,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-12-18 04:02:03,498 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 9.772727272727273) internal successors, (215), 15 states have internal predecessors, (215), 7 states have call successors, (43), 7 states have call predecessors, (43), 8 states have return successors, (41), 9 states have call predecessors, (41), 7 states have call successors, (41) Word has length 165 [2021-12-18 04:02:03,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 04:02:04,429 INFO L225 Difference]: With dead ends: 314322 [2021-12-18 04:02:04,429 INFO L226 Difference]: Without dead ends: 192476 [2021-12-18 04:02:04,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 377 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1638 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=770, Invalid=4930, Unknown=0, NotChecked=0, Total=5700 [2021-12-18 04:02:04,729 INFO L933 BasicCegarLoop]: 2332 mSDtfsCounter, 6666 mSDsluCounter, 24095 mSDsCounter, 0 mSdLazyCounter, 12811 mSolverCounterSat, 3231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7202 SdHoareTripleChecker+Valid, 26427 SdHoareTripleChecker+Invalid, 16042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3231 IncrementalHoareTripleChecker+Valid, 12811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-12-18 04:02:04,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7202 Valid, 26427 Invalid, 16042 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3231 Valid, 12811 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2021-12-18 04:02:04,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192476 states. [2021-12-18 04:02:09,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192476 to 120922. [2021-12-18 04:02:09,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120922 states, 85249 states have (on average 1.2574575654846392) internal successors, (107197), 87657 states have internal predecessors, (107197), 27232 states have call successors, (27232), 7309 states have call predecessors, (27232), 8440 states have return successors, (31003), 26815 states have call predecessors, (31003), 27231 states have call successors, (31003) [2021-12-18 04:02:09,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120922 states to 120922 states and 165432 transitions. [2021-12-18 04:02:09,843 INFO L78 Accepts]: Start accepts. Automaton has 120922 states and 165432 transitions. Word has length 165 [2021-12-18 04:02:09,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 04:02:09,843 INFO L470 AbstractCegarLoop]: Abstraction has 120922 states and 165432 transitions. [2021-12-18 04:02:09,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 9.772727272727273) internal successors, (215), 15 states have internal predecessors, (215), 7 states have call successors, (43), 7 states have call predecessors, (43), 8 states have return successors, (41), 9 states have call predecessors, (41), 7 states have call successors, (41) [2021-12-18 04:02:09,844 INFO L276 IsEmpty]: Start isEmpty. Operand 120922 states and 165432 transitions. [2021-12-18 04:02:09,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-18 04:02:09,849 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 04:02:09,849 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:02:09,871 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 04:02:10,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:02:10,060 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 04:02:10,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 04:02:10,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1281542941, now seen corresponding path program 1 times [2021-12-18 04:02:10,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 04:02:10,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653105982] [2021-12-18 04:02:10,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:02:10,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 04:02:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 04:02:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:02:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:02:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-18 04:02:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 04:02:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:02:10,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 04:02:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 04:02:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 04:02:10,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 04:02:10,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 04:02:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 04:02:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-18 04:02:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-18 04:02:10,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:10,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 04:02:10,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 04:02:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 04:02:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 04:02:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-18 04:02:10,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 04:02:10,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653105982] [2021-12-18 04:02:10,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653105982] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 04:02:10,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931202214] [2021-12-18 04:02:10,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 04:02:10,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 04:02:10,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 04:02:10,310 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 04:02:10,313 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 04:02:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 04:02:10,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-18 04:02:10,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 04:02:11,020 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-18 04:02:11,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 04:02:11,361 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-18 04:02:11,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931202214] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 04:02:11,362 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 04:02:11,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 21 [2021-12-18 04:02:11,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717464566] [2021-12-18 04:02:11,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 04:02:11,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-18 04:02:11,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 04:02:11,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-18 04:02:11,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2021-12-18 04:02:11,364 INFO L87 Difference]: Start difference. First operand 120922 states and 165432 transitions. Second operand has 21 states, 21 states have (on average 10.047619047619047) internal successors, (211), 15 states have internal predecessors, (211), 8 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (38), 9 states have call predecessors, (38), 7 states have call successors, (38)