./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 70a2ace6fc40caa55e586c636402c0a5dfab1c8b77b7cf0fdf6a2120173a773c --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:11:47,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:11:47,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:11:47,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:11:47,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:11:47,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:11:47,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:11:47,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:11:47,857 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:11:47,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:11:47,862 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:11:47,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:11:47,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:11:47,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:11:47,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:11:47,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:11:47,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:11:47,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:11:47,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:11:47,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:11:47,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:11:47,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:11:47,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:11:47,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:11:47,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:11:47,897 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:11:47,898 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:11:47,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:11:47,900 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:11:47,901 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:11:47,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:11:47,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:11:47,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:11:47,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:11:47,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:11:47,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:11:47,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:11:47,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:11:47,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:11:47,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:11:47,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:11:47,909 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:11:47,940 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:11:47,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:11:47,941 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:11:47,941 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:11:47,942 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:11:47,942 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:11:47,943 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:11:47,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:11:47,943 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:11:47,944 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:11:47,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:11:47,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:11:47,956 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:11:47,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:11:47,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:11:47,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:11:47,957 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:11:47,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:11:47,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:11:47,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:11:47,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:11:47,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:11:47,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:11:47,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:11:47,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:11:47,958 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:11:47,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:11:47,958 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:11:47,958 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:11:47,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:11:47,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:11:47,958 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70a2ace6fc40caa55e586c636402c0a5dfab1c8b77b7cf0fdf6a2120173a773c [2021-12-14 17:11:48,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:11:48,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:11:48,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:11:48,257 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:11:48,258 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:11:48,259 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i [2021-12-14 17:11:48,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/973e4f0d4/4100925fc19f457ca7ef22a5e75e3cfd/FLAGb39c0e4bc [2021-12-14 17:11:49,084 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:11:49,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i [2021-12-14 17:11:49,143 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/973e4f0d4/4100925fc19f457ca7ef22a5e75e3cfd/FLAGb39c0e4bc [2021-12-14 17:11:49,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/973e4f0d4/4100925fc19f457ca7ef22a5e75e3cfd [2021-12-14 17:11:49,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:11:49,311 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:11:49,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:11:49,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:11:49,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:11:49,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:11:49" (1/1) ... [2021-12-14 17:11:49,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a47514e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:49, skipping insertion in model container [2021-12-14 17:11:49,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:11:49" (1/1) ... [2021-12-14 17:11:49,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:11:49,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:11:50,499 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i[199632,199645] [2021-12-14 17:11:50,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:11:50,592 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:11:50,834 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i[199632,199645] [2021-12-14 17:11:50,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:11:51,163 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:11:51,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:51 WrapperNode [2021-12-14 17:11:51,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:11:51,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:11:51,167 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:11:51,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:11:51,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:51" (1/1) ... [2021-12-14 17:11:51,229 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:51" (1/1) ... [2021-12-14 17:11:51,317 INFO L137 Inliner]: procedures = 142, calls = 839, calls flagged for inlining = 59, calls inlined = 40, statements flattened = 1657 [2021-12-14 17:11:51,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:11:51,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:11:51,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:11:51,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:11:51,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:51" (1/1) ... [2021-12-14 17:11:51,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:51" (1/1) ... [2021-12-14 17:11:51,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:51" (1/1) ... [2021-12-14 17:11:51,351 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:51" (1/1) ... [2021-12-14 17:11:51,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:51" (1/1) ... [2021-12-14 17:11:51,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:51" (1/1) ... [2021-12-14 17:11:51,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:51" (1/1) ... [2021-12-14 17:11:51,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:11:51,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:11:51,468 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:11:51,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:11:51,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:51" (1/1) ... [2021-12-14 17:11:51,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:11:51,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:11:51,503 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) [2021-12-14 17:11:51,527 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 [2021-12-14 17:11:51,546 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-14 17:11:51,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-14 17:11:51,547 INFO L130 BoogieDeclarations]: Found specification of procedure catc_tx_run [2021-12-14 17:11:51,547 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_tx_run [2021-12-14 17:11:51,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:11:51,547 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-14 17:11:51,548 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-14 17:11:51,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:11:51,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:11:51,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:11:51,548 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-12-14 17:11:51,548 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-12-14 17:11:51,548 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-14 17:11:51,548 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-14 17:11:51,549 INFO L130 BoogieDeclarations]: Found specification of procedure catc_ctrl_run [2021-12-14 17:11:51,549 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_ctrl_run [2021-12-14 17:11:51,549 INFO L130 BoogieDeclarations]: Found specification of procedure catc_get_drvinfo [2021-12-14 17:11:51,549 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_get_drvinfo [2021-12-14 17:11:51,549 INFO L130 BoogieDeclarations]: Found specification of procedure catc_ctrl_msg [2021-12-14 17:11:51,549 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_ctrl_msg [2021-12-14 17:11:51,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:11:51,550 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:11:51,550 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-14 17:11:51,550 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-14 17:11:51,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:11:51,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:11:51,550 INFO L130 BoogieDeclarations]: Found specification of procedure catc_multicast [2021-12-14 17:11:51,550 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_multicast [2021-12-14 17:11:51,551 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-14 17:11:51,551 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-14 17:11:51,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:11:51,551 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-14 17:11:51,551 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-14 17:11:51,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2021-12-14 17:11:51,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2021-12-14 17:11:51,551 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-14 17:11:51,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-14 17:11:51,552 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-14 17:11:51,552 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-14 17:11:51,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 17:11:51,553 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 17:11:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-14 17:11:51,553 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-14 17:11:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:11:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2021-12-14 17:11:51,553 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2021-12-14 17:11:51,553 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-14 17:11:51,554 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-14 17:11:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 17:11:51,554 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 17:11:51,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:11:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:11:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:11:51,555 INFO L130 BoogieDeclarations]: Found specification of procedure catc_ctrl_async [2021-12-14 17:11:51,555 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_ctrl_async [2021-12-14 17:11:51,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:11:51,556 INFO L130 BoogieDeclarations]: Found specification of procedure catc_exit [2021-12-14 17:11:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_exit [2021-12-14 17:11:51,557 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-14 17:11:51,557 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-14 17:11:51,557 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-14 17:11:51,558 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-14 17:11:51,558 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 17:11:51,558 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 17:11:51,558 INFO L130 BoogieDeclarations]: Found specification of procedure catc_init [2021-12-14 17:11:51,558 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_init [2021-12-14 17:11:51,559 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-12-14 17:11:51,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-12-14 17:11:51,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:11:51,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:11:51,559 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-14 17:11:51,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-14 17:11:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-14 17:11:51,560 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-14 17:11:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-14 17:11:51,560 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-14 17:11:51,560 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-14 17:11:51,561 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-14 17:11:51,561 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-14 17:11:51,561 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-14 17:11:51,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2021-12-14 17:11:51,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2021-12-14 17:11:51,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:11:51,561 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-14 17:11:51,562 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-14 17:11:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:11:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-12-14 17:11:51,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:11:51,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:11:51,961 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:11:51,963 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:11:52,581 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2021-12-14 17:11:52,662 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 17:11:52,675 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 17:11:53,668 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##191: assume false; [2021-12-14 17:11:53,668 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##192: assume !false; [2021-12-14 17:11:53,668 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2021-12-14 17:11:53,668 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2021-12-14 17:11:53,720 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:11:53,730 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:11:53,730 INFO L301 CfgBuilder]: Removed 30 assume(true) statements. [2021-12-14 17:11:53,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:11:53 BoogieIcfgContainer [2021-12-14 17:11:53,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:11:53,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:11:53,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:11:53,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:11:53,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:11:49" (1/3) ... [2021-12-14 17:11:53,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180505e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:11:53, skipping insertion in model container [2021-12-14 17:11:53,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:51" (2/3) ... [2021-12-14 17:11:53,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180505e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:11:53, skipping insertion in model container [2021-12-14 17:11:53,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:11:53" (3/3) ... [2021-12-14 17:11:53,740 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-usb-catc.ko.cil.out.i [2021-12-14 17:11:53,745 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:11:53,745 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:11:53,787 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:11:53,793 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 [2021-12-14 17:11:53,793 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:11:53,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 539 states, 380 states have (on average 1.381578947368421) internal successors, (525), 393 states have internal predecessors, (525), 122 states have call successors, (122), 36 states have call predecessors, (122), 35 states have return successors, (121), 120 states have call predecessors, (121), 121 states have call successors, (121) [2021-12-14 17:11:53,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-14 17:11:53,824 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:11:53,824 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:11:53,825 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:11:53,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:11:53,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1343427639, now seen corresponding path program 1 times [2021-12-14 17:11:53,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:11:53,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028033561] [2021-12-14 17:11:53,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:11:53,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:11:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:54,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:11:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:11:54,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:11:54,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028033561] [2021-12-14 17:11:54,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028033561] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:11:54,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:11:54,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:11:54,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699007645] [2021-12-14 17:11:54,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:11:54,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:11:54,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:11:54,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:11:54,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:11:54,362 INFO L87 Difference]: Start difference. First operand has 539 states, 380 states have (on average 1.381578947368421) internal successors, (525), 393 states have internal predecessors, (525), 122 states have call successors, (122), 36 states have call predecessors, (122), 35 states have return successors, (121), 120 states have call predecessors, (121), 121 states have call successors, (121) Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:11:54,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:11:54,529 INFO L93 Difference]: Finished difference Result 1076 states and 1560 transitions. [2021-12-14 17:11:54,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:11:54,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-14 17:11:54,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:11:54,546 INFO L225 Difference]: With dead ends: 1076 [2021-12-14 17:11:54,547 INFO L226 Difference]: Without dead ends: 540 [2021-12-14 17:11:54,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:11:54,557 INFO L933 BasicCegarLoop]: 709 mSDtfsCounter, 301 mSDsluCounter, 2432 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 3141 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:11:54,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 3141 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:11:54,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-12-14 17:11:54,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 535. [2021-12-14 17:11:54,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 378 states have (on average 1.216931216931217) internal successors, (460), 386 states have internal predecessors, (460), 121 states have call successors, (121), 35 states have call predecessors, (121), 35 states have return successors, (119), 118 states have call predecessors, (119), 118 states have call successors, (119) [2021-12-14 17:11:54,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 700 transitions. [2021-12-14 17:11:54,654 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 700 transitions. Word has length 17 [2021-12-14 17:11:54,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:11:54,654 INFO L470 AbstractCegarLoop]: Abstraction has 535 states and 700 transitions. [2021-12-14 17:11:54,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:11:54,655 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 700 transitions. [2021-12-14 17:11:54,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-14 17:11:54,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:11:54,656 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:11:54,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:11:54,656 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:11:54,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:11:54,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1736454649, now seen corresponding path program 1 times [2021-12-14 17:11:54,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:11:54,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100445208] [2021-12-14 17:11:54,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:11:54,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:11:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:54,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:11:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:54,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:11:54,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:11:54,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100445208] [2021-12-14 17:11:54,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100445208] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:11:54,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:11:54,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:11:54,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340557698] [2021-12-14 17:11:54,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:11:54,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:11:54,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:11:54,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:11:54,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:11:54,831 INFO L87 Difference]: Start difference. First operand 535 states and 700 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:11:54,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:11:54,902 INFO L93 Difference]: Finished difference Result 1565 states and 2072 transitions. [2021-12-14 17:11:54,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:11:54,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-14 17:11:54,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:11:54,914 INFO L225 Difference]: With dead ends: 1565 [2021-12-14 17:11:54,914 INFO L226 Difference]: Without dead ends: 1048 [2021-12-14 17:11:54,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:11:54,918 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 683 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:11:54,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 1649 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:11:54,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-12-14 17:11:54,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1045. [2021-12-14 17:11:54,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 738 states have (on average 1.2168021680216803) internal successors, (898), 751 states have internal predecessors, (898), 238 states have call successors, (238), 68 states have call predecessors, (238), 68 states have return successors, (240), 234 states have call predecessors, (240), 235 states have call successors, (240) [2021-12-14 17:11:54,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1376 transitions. [2021-12-14 17:11:54,982 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1376 transitions. Word has length 17 [2021-12-14 17:11:54,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:11:54,983 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 1376 transitions. [2021-12-14 17:11:54,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:11:54,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1376 transitions. [2021-12-14 17:11:54,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 17:11:54,984 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:11:54,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:11:54,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:11:54,985 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:11:54,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:11:54,985 INFO L85 PathProgramCache]: Analyzing trace with hash 2004221234, now seen corresponding path program 1 times [2021-12-14 17:11:54,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:11:54,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993136782] [2021-12-14 17:11:54,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:11:54,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:11:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:55,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:11:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:55,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:11:55,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:11:55,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993136782] [2021-12-14 17:11:55,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993136782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:11:55,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:11:55,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 17:11:55,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718809421] [2021-12-14 17:11:55,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:11:55,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 17:11:55,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:11:55,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 17:11:55,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:11:55,090 INFO L87 Difference]: Start difference. First operand 1045 states and 1376 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:11:55,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:11:55,127 INFO L93 Difference]: Finished difference Result 1047 states and 1377 transitions. [2021-12-14 17:11:55,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 17:11:55,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-14 17:11:55,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:11:55,133 INFO L225 Difference]: With dead ends: 1047 [2021-12-14 17:11:55,134 INFO L226 Difference]: Without dead ends: 1036 [2021-12-14 17:11:55,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 17:11:55,139 INFO L933 BasicCegarLoop]: 693 mSDtfsCounter, 685 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:11:55,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:11:55,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2021-12-14 17:11:55,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1031. [2021-12-14 17:11:55,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 728 states have (on average 1.2115384615384615) internal successors, (882), 739 states have internal predecessors, (882), 236 states have call successors, (236), 67 states have call predecessors, (236), 66 states have return successors, (238), 232 states have call predecessors, (238), 234 states have call successors, (238) [2021-12-14 17:11:55,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1356 transitions. [2021-12-14 17:11:55,240 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1356 transitions. Word has length 18 [2021-12-14 17:11:55,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:11:55,241 INFO L470 AbstractCegarLoop]: Abstraction has 1031 states and 1356 transitions. [2021-12-14 17:11:55,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 17:11:55,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1356 transitions. [2021-12-14 17:11:55,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-14 17:11:55,252 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:11:55,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:11:55,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:11:55,253 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:11:55,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:11:55,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1305048404, now seen corresponding path program 1 times [2021-12-14 17:11:55,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:11:55,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213861362] [2021-12-14 17:11:55,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:11:55,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:11:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:55,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:11:55,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:55,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-14 17:11:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:55,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-14 17:11:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:55,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:11:55,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:11:55,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213861362] [2021-12-14 17:11:55,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213861362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:11:55,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:11:55,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:11:55,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851120757] [2021-12-14 17:11:55,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:11:55,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:11:55,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:11:55,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:11:55,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:11:55,400 INFO L87 Difference]: Start difference. First operand 1031 states and 1356 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 17:11:56,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:11:56,424 INFO L93 Difference]: Finished difference Result 2371 states and 3192 transitions. [2021-12-14 17:11:56,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:11:56,425 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2021-12-14 17:11:56,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:11:56,435 INFO L225 Difference]: With dead ends: 2371 [2021-12-14 17:11:56,435 INFO L226 Difference]: Without dead ends: 1352 [2021-12-14 17:11:56,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:11:56,447 INFO L933 BasicCegarLoop]: 764 mSDtfsCounter, 417 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-14 17:11:56,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 1448 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-14 17:11:56,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-12-14 17:11:56,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1330. [2021-12-14 17:11:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 945 states have (on average 1.2338624338624338) internal successors, (1166), 964 states have internal predecessors, (1166), 318 states have call successors, (318), 67 states have call predecessors, (318), 66 states have return successors, (320), 312 states have call predecessors, (320), 316 states have call successors, (320) [2021-12-14 17:11:56,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1804 transitions. [2021-12-14 17:11:56,525 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1804 transitions. Word has length 50 [2021-12-14 17:11:56,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:11:56,526 INFO L470 AbstractCegarLoop]: Abstraction has 1330 states and 1804 transitions. [2021-12-14 17:11:56,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-14 17:11:56,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1804 transitions. [2021-12-14 17:11:56,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-14 17:11:56,531 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:11:56,532 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 17:11:56,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:11:56,532 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:11:56,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:11:56,533 INFO L85 PathProgramCache]: Analyzing trace with hash -518166049, now seen corresponding path program 1 times [2021-12-14 17:11:56,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:11:56,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26299564] [2021-12-14 17:11:56,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:11:56,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:11:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:56,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:11:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:56,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:11:56,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:56,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 17:11:56,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:56,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:11:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:56,687 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:11:56,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:11:56,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26299564] [2021-12-14 17:11:56,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26299564] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:11:56,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:11:56,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:11:56,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118480867] [2021-12-14 17:11:56,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:11:56,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:11:56,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:11:56,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:11:56,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:11:56,690 INFO L87 Difference]: Start difference. First operand 1330 states and 1804 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-14 17:11:58,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:11:58,044 INFO L93 Difference]: Finished difference Result 2687 states and 3650 transitions. [2021-12-14 17:11:58,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:11:58,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 72 [2021-12-14 17:11:58,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:11:58,052 INFO L225 Difference]: With dead ends: 2687 [2021-12-14 17:11:58,052 INFO L226 Difference]: Without dead ends: 1358 [2021-12-14 17:11:58,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:11:58,057 INFO L933 BasicCegarLoop]: 673 mSDtfsCounter, 173 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:11:58,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 2017 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 17:11:58,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2021-12-14 17:11:58,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1330. [2021-12-14 17:11:58,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 945 states have (on average 1.2317460317460318) internal successors, (1164), 966 states have internal predecessors, (1164), 317 states have call successors, (317), 68 states have call predecessors, (317), 67 states have return successors, (317), 309 states have call predecessors, (317), 313 states have call successors, (317) [2021-12-14 17:11:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1798 transitions. [2021-12-14 17:11:58,120 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1798 transitions. Word has length 72 [2021-12-14 17:11:58,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:11:58,120 INFO L470 AbstractCegarLoop]: Abstraction has 1330 states and 1798 transitions. [2021-12-14 17:11:58,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-14 17:11:58,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1798 transitions. [2021-12-14 17:11:58,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-14 17:11:58,123 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:11:58,123 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-14 17:11:58,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:11:58,124 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:11:58,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:11:58,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2140419496, now seen corresponding path program 1 times [2021-12-14 17:11:58,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:11:58,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240695973] [2021-12-14 17:11:58,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:11:58,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:11:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:11:58,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:11:58,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 17:11:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:11:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 17:11:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 17:11:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:11:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:11:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:11:58,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:11:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:11:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:11:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:11:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:11:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:11:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:11:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 17:11:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:11:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:11:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,516 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-14 17:11:58,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:11:58,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240695973] [2021-12-14 17:11:58,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240695973] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:11:58,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714042803] [2021-12-14 17:11:58,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:11:58,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:11:58,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:11:58,527 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) [2021-12-14 17:11:58,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 17:11:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:59,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 1884 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-14 17:11:59,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:11:59,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-14 17:11:59,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-14 17:11:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-14 17:11:59,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:11:59,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714042803] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:11:59,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:11:59,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-12-14 17:11:59,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334201930] [2021-12-14 17:11:59,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:11:59,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:11:59,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:11:59,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:11:59,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-12-14 17:11:59,586 INFO L87 Difference]: Start difference. First operand 1330 states and 1798 transitions. Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-14 17:12:00,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:00,884 INFO L93 Difference]: Finished difference Result 1392 states and 1878 transitions. [2021-12-14 17:12:00,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:12:00,885 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 146 [2021-12-14 17:12:00,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:00,892 INFO L225 Difference]: With dead ends: 1392 [2021-12-14 17:12:00,893 INFO L226 Difference]: Without dead ends: 1332 [2021-12-14 17:12:00,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-14 17:12:00,895 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 4 mSDsluCounter, 3232 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:00,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3919 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-14 17:12:00,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2021-12-14 17:12:00,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1330. [2021-12-14 17:12:00,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 945 states have (on average 1.2296296296296296) internal successors, (1162), 966 states have internal predecessors, (1162), 317 states have call successors, (317), 68 states have call predecessors, (317), 67 states have return successors, (317), 309 states have call predecessors, (317), 313 states have call successors, (317) [2021-12-14 17:12:00,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1796 transitions. [2021-12-14 17:12:00,955 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1796 transitions. Word has length 146 [2021-12-14 17:12:00,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:00,956 INFO L470 AbstractCegarLoop]: Abstraction has 1330 states and 1796 transitions. [2021-12-14 17:12:00,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-14 17:12:00,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1796 transitions. [2021-12-14 17:12:00,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-14 17:12:00,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:00,959 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:12:00,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 17:12:01,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-14 17:12:01,176 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:01,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:01,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1832854936, now seen corresponding path program 1 times [2021-12-14 17:12:01,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:01,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988580046] [2021-12-14 17:12:01,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:01,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:12:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 17:12:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:12:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 17:12:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 17:12:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:12:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:12:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:12:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:01,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:12:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 17:12:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,563 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-14 17:12:01,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:01,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988580046] [2021-12-14 17:12:01,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988580046] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:12:01,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504248606] [2021-12-14 17:12:01,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:01,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:12:01,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:12:01,567 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) [2021-12-14 17:12:01,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 17:12:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:02,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 1889 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-14 17:12:02,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:12:02,365 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-14 17:12:02,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:12:02,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504248606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:12:02,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:12:02,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 8 [2021-12-14 17:12:02,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133878333] [2021-12-14 17:12:02,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:12:02,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:12:02,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:02,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:12:02,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:12:02,368 INFO L87 Difference]: Start difference. First operand 1330 states and 1796 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 17:12:02,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:02,473 INFO L93 Difference]: Finished difference Result 2671 states and 3611 transitions. [2021-12-14 17:12:02,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:12:02,474 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 147 [2021-12-14 17:12:02,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:02,481 INFO L225 Difference]: With dead ends: 2671 [2021-12-14 17:12:02,482 INFO L226 Difference]: Without dead ends: 1351 [2021-12-14 17:12:02,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 182 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:12:02,487 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 15 mSDsluCounter, 2771 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 3469 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:02,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 3469 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:12:02,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-12-14 17:12:02,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1337. [2021-12-14 17:12:02,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 950 states have (on average 1.2284210526315789) internal successors, (1167), 972 states have internal predecessors, (1167), 317 states have call successors, (317), 68 states have call predecessors, (317), 69 states have return successors, (322), 310 states have call predecessors, (322), 313 states have call successors, (322) [2021-12-14 17:12:02,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1806 transitions. [2021-12-14 17:12:02,549 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1806 transitions. Word has length 147 [2021-12-14 17:12:02,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:02,549 INFO L470 AbstractCegarLoop]: Abstraction has 1337 states and 1806 transitions. [2021-12-14 17:12:02,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-14 17:12:02,550 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1806 transitions. [2021-12-14 17:12:02,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-14 17:12:02,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:02,555 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-14 17:12:02,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 17:12:02,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-14 17:12:02,780 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:02,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:02,780 INFO L85 PathProgramCache]: Analyzing trace with hash -480950281, now seen corresponding path program 1 times [2021-12-14 17:12:02,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:02,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273503877] [2021-12-14 17:12:02,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:02,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:03,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:12:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 17:12:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:12:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 17:12:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 17:12:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:12:03,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:12:03,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:12:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:03,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:12:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 17:12:03,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,158 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-14 17:12:03,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:03,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273503877] [2021-12-14 17:12:03,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273503877] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:12:03,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626358598] [2021-12-14 17:12:03,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:03,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:12:03,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:12:03,164 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) [2021-12-14 17:12:03,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-14 17:12:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 1898 conjuncts, 65 conjunts are in the unsatisfiable core [2021-12-14 17:12:03,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:12:03,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-14 17:12:03,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-14 17:12:03,950 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-14 17:12:03,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-14 17:12:03,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:12:03,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-14 17:12:04,176 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-14 17:12:04,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-14 17:12:04,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:12:04,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-14 17:12:04,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:12:04,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:12:04,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:12:04,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-14 17:12:04,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:12:04,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:12:04,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:12:04,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2021-12-14 17:12:04,738 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-14 17:12:04,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:12:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-14 17:12:07,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626358598] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:12:07,099 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 17:12:07,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 8] total 19 [2021-12-14 17:12:07,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753725084] [2021-12-14 17:12:07,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 17:12:07,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-14 17:12:07,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:07,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-14 17:12:07,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-12-14 17:12:07,101 INFO L87 Difference]: Start difference. First operand 1337 states and 1806 transitions. Second operand has 19 states, 18 states have (on average 5.833333333333333) internal successors, (105), 14 states have internal predecessors, (105), 8 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) [2021-12-14 17:12:11,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:11,669 INFO L93 Difference]: Finished difference Result 2440 states and 3300 transitions. [2021-12-14 17:12:11,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-14 17:12:11,670 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.833333333333333) internal successors, (105), 14 states have internal predecessors, (105), 8 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) Word has length 147 [2021-12-14 17:12:11,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:11,675 INFO L225 Difference]: With dead ends: 2440 [2021-12-14 17:12:11,676 INFO L226 Difference]: Without dead ends: 1024 [2021-12-14 17:12:11,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 313 SyntacticMatches, 9 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2021-12-14 17:12:11,681 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 160 mSDsluCounter, 5533 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 6227 SdHoareTripleChecker+Invalid, 2700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 617 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:11,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 6227 Invalid, 2700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1952 Invalid, 0 Unknown, 617 Unchecked, 4.4s Time] [2021-12-14 17:12:11,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-12-14 17:12:11,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1008. [2021-12-14 17:12:11,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 717 states have (on average 1.2259414225941423) internal successors, (879), 734 states have internal predecessors, (879), 226 states have call successors, (226), 63 states have call predecessors, (226), 64 states have return successors, (231), 221 states have call predecessors, (231), 224 states have call successors, (231) [2021-12-14 17:12:11,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1336 transitions. [2021-12-14 17:12:11,721 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1336 transitions. Word has length 147 [2021-12-14 17:12:11,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:11,722 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1336 transitions. [2021-12-14 17:12:11,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.833333333333333) internal successors, (105), 14 states have internal predecessors, (105), 8 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (23), 8 states have call predecessors, (23), 7 states have call successors, (23) [2021-12-14 17:12:11,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1336 transitions. [2021-12-14 17:12:11,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-14 17:12:11,725 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:11,725 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:12:11,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-14 17:12:11,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:12:11,940 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:11,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:11,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1300549654, now seen corresponding path program 1 times [2021-12-14 17:12:11,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:11,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993032811] [2021-12-14 17:12:11,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:11,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:12:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 17:12:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:12:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 17:12:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 17:12:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:12:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:12:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:12:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:12:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:12,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 17:12:12,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-14 17:12:12,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:12,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993032811] [2021-12-14 17:12:12,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993032811] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:12:12,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185790390] [2021-12-14 17:12:12,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:12,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:12:12,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:12:12,272 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) [2021-12-14 17:12:12,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-14 17:12:12,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 1897 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-14 17:12:12,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:12:13,125 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-14 17:12:13,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:12:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-14 17:12:13,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185790390] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:12:13,645 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 17:12:13,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 7] total 16 [2021-12-14 17:12:13,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419046795] [2021-12-14 17:12:13,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 17:12:13,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-14 17:12:13,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:13,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-14 17:12:13,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-12-14 17:12:13,647 INFO L87 Difference]: Start difference. First operand 1008 states and 1336 transitions. Second operand has 16 states, 16 states have (on average 9.875) internal successors, (158), 12 states have internal predecessors, (158), 8 states have call successors, (42), 9 states have call predecessors, (42), 9 states have return successors, (41), 9 states have call predecessors, (41), 8 states have call successors, (41) [2021-12-14 17:12:18,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:18,668 INFO L93 Difference]: Finished difference Result 2083 states and 2784 transitions. [2021-12-14 17:12:18,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-14 17:12:18,668 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.875) internal successors, (158), 12 states have internal predecessors, (158), 8 states have call successors, (42), 9 states have call predecessors, (42), 9 states have return successors, (41), 9 states have call predecessors, (41), 8 states have call successors, (41) Word has length 147 [2021-12-14 17:12:18,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:18,675 INFO L225 Difference]: With dead ends: 2083 [2021-12-14 17:12:18,675 INFO L226 Difference]: Without dead ends: 1389 [2021-12-14 17:12:18,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=269, Invalid=853, Unknown=0, NotChecked=0, Total=1122 [2021-12-14 17:12:18,680 INFO L933 BasicCegarLoop]: 915 mSDtfsCounter, 1971 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 3635 mSolverCounterSat, 1042 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2102 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 4677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1042 IncrementalHoareTripleChecker+Valid, 3635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:18,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2102 Valid, 5469 Invalid, 4677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1042 Valid, 3635 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-14 17:12:18,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2021-12-14 17:12:18,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1364. [2021-12-14 17:12:18,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 967 states have (on average 1.2223371251292658) internal successors, (1182), 989 states have internal predecessors, (1182), 302 states have call successors, (302), 92 states have call predecessors, (302), 94 states have return successors, (329), 297 states have call predecessors, (329), 300 states have call successors, (329) [2021-12-14 17:12:18,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1813 transitions. [2021-12-14 17:12:18,739 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1813 transitions. Word has length 147 [2021-12-14 17:12:18,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:18,739 INFO L470 AbstractCegarLoop]: Abstraction has 1364 states and 1813 transitions. [2021-12-14 17:12:18,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.875) internal successors, (158), 12 states have internal predecessors, (158), 8 states have call successors, (42), 9 states have call predecessors, (42), 9 states have return successors, (41), 9 states have call predecessors, (41), 8 states have call successors, (41) [2021-12-14 17:12:18,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1813 transitions. [2021-12-14 17:12:18,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-14 17:12:18,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:18,743 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:12:18,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-14 17:12:18,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:12:18,955 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:18,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:18,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1296056406, now seen corresponding path program 1 times [2021-12-14 17:12:18,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:18,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286494024] [2021-12-14 17:12:18,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:18,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:19,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:12:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 17:12:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:12:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 17:12:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 17:12:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:12:19,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:12:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:12:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:19,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:19,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:12:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 17:12:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:19,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:19,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-14 17:12:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-14 17:12:19,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:19,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286494024] [2021-12-14 17:12:19,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286494024] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:12:19,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239649815] [2021-12-14 17:12:19,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:19,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:12:19,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:12:19,288 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) [2021-12-14 17:12:19,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-14 17:12:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:19,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-14 17:12:19,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:12:20,046 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-14 17:12:20,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:12:20,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239649815] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:12:20,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:12:20,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 10 [2021-12-14 17:12:20,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296463189] [2021-12-14 17:12:20,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:12:20,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:12:20,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:20,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:12:20,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:12:20,049 INFO L87 Difference]: Start difference. First operand 1364 states and 1813 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 17:12:20,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:20,121 INFO L93 Difference]: Finished difference Result 2402 states and 3217 transitions. [2021-12-14 17:12:20,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:12:20,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) Word has length 157 [2021-12-14 17:12:20,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:20,131 INFO L225 Difference]: With dead ends: 2402 [2021-12-14 17:12:20,132 INFO L226 Difference]: Without dead ends: 1364 [2021-12-14 17:12:20,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 192 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-14 17:12:20,136 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 2 mSDsluCounter, 3446 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4136 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:20,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 4136 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 17:12:20,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2021-12-14 17:12:20,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1362. [2021-12-14 17:12:20,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 965 states have (on average 1.2217616580310882) internal successors, (1179), 988 states have internal predecessors, (1179), 302 states have call successors, (302), 92 states have call predecessors, (302), 94 states have return successors, (329), 296 states have call predecessors, (329), 300 states have call successors, (329) [2021-12-14 17:12:20,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1810 transitions. [2021-12-14 17:12:20,185 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1810 transitions. Word has length 157 [2021-12-14 17:12:20,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:20,186 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 1810 transitions. [2021-12-14 17:12:20,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-14 17:12:20,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1810 transitions. [2021-12-14 17:12:20,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-14 17:12:20,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:20,190 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:12:20,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-14 17:12:20,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-14 17:12:20,409 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:20,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:20,410 INFO L85 PathProgramCache]: Analyzing trace with hash -657079690, now seen corresponding path program 2 times [2021-12-14 17:12:20,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:20,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066125818] [2021-12-14 17:12:20,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:20,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:20,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:20,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:20,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:12:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:20,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 17:12:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:20,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:12:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:20,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 17:12:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:20,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 17:12:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:20,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:12:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:20,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:12:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:20,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:20,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:20,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:12:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:20,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:20,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:20,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:20,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:20,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:12:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:20,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:20,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:20,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 17:12:20,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:20,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:20,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:20,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-14 17:12:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:20,709 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-14 17:12:20,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:20,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066125818] [2021-12-14 17:12:20,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066125818] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:12:20,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474588619] [2021-12-14 17:12:20,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-14 17:12:20,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:12:20,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:12:20,711 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) [2021-12-14 17:12:20,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-14 17:12:21,316 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-14 17:12:21,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-14 17:12:21,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 1946 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-14 17:12:21,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:12:21,665 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-14 17:12:21,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:12:22,280 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-14 17:12:22,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474588619] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:12:22,281 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 17:12:22,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 14] total 26 [2021-12-14 17:12:22,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938341187] [2021-12-14 17:12:22,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 17:12:22,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-14 17:12:22,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:22,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-14 17:12:22,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=522, Unknown=0, NotChecked=0, Total=650 [2021-12-14 17:12:22,284 INFO L87 Difference]: Start difference. First operand 1362 states and 1810 transitions. Second operand has 26 states, 25 states have (on average 9.2) internal successors, (230), 22 states have internal predecessors, (230), 14 states have call successors, (47), 14 states have call predecessors, (47), 10 states have return successors, (43), 11 states have call predecessors, (43), 12 states have call successors, (43) [2021-12-14 17:12:31,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:31,619 INFO L93 Difference]: Finished difference Result 3544 states and 4740 transitions. [2021-12-14 17:12:31,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-12-14 17:12:31,620 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 9.2) internal successors, (230), 22 states have internal predecessors, (230), 14 states have call successors, (47), 14 states have call predecessors, (47), 10 states have return successors, (43), 11 states have call predecessors, (43), 12 states have call successors, (43) Word has length 157 [2021-12-14 17:12:31,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:31,637 INFO L225 Difference]: With dead ends: 3544 [2021-12-14 17:12:31,638 INFO L226 Difference]: Without dead ends: 3455 [2021-12-14 17:12:31,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=944, Invalid=3088, Unknown=0, NotChecked=0, Total=4032 [2021-12-14 17:12:31,642 INFO L933 BasicCegarLoop]: 986 mSDtfsCounter, 6006 mSDsluCounter, 5942 mSDsCounter, 0 mSdLazyCounter, 7712 mSolverCounterSat, 3512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6307 SdHoareTripleChecker+Valid, 6928 SdHoareTripleChecker+Invalid, 11224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3512 IncrementalHoareTripleChecker+Valid, 7712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:31,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6307 Valid, 6928 Invalid, 11224 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3512 Valid, 7712 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2021-12-14 17:12:31,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3455 states. [2021-12-14 17:12:31,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3455 to 3386. [2021-12-14 17:12:31,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 2393 states have (on average 1.226076055160886) internal successors, (2934), 2454 states have internal predecessors, (2934), 768 states have call successors, (768), 214 states have call predecessors, (768), 224 states have return successors, (853), 754 states have call predecessors, (853), 766 states have call successors, (853) [2021-12-14 17:12:31,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 4555 transitions. [2021-12-14 17:12:31,774 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 4555 transitions. Word has length 157 [2021-12-14 17:12:31,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:31,774 INFO L470 AbstractCegarLoop]: Abstraction has 3386 states and 4555 transitions. [2021-12-14 17:12:31,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 9.2) internal successors, (230), 22 states have internal predecessors, (230), 14 states have call successors, (47), 14 states have call predecessors, (47), 10 states have return successors, (43), 11 states have call predecessors, (43), 12 states have call successors, (43) [2021-12-14 17:12:31,775 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 4555 transitions. [2021-12-14 17:12:31,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-14 17:12:31,778 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:31,778 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2021-12-14 17:12:31,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-14 17:12:31,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:12:31,992 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:31,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:31,992 INFO L85 PathProgramCache]: Analyzing trace with hash 507809139, now seen corresponding path program 1 times [2021-12-14 17:12:31,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:31,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340887024] [2021-12-14 17:12:31,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:31,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:12:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 17:12:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:12:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 17:12:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 17:12:32,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:12:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:12:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:12:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:12:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 17:12:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-14 17:12:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,336 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-14 17:12:32,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:32,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340887024] [2021-12-14 17:12:32,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340887024] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:12:32,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058952602] [2021-12-14 17:12:32,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:32,337 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:12:32,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:12:32,338 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) [2021-12-14 17:12:32,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-14 17:12:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:32,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 1935 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-14 17:12:32,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:12:33,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-14 17:12:33,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-14 17:12:33,215 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-14 17:12:33,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-14 17:12:33,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:12:33,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-14 17:12:33,398 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-14 17:12:33,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-14 17:12:33,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:12:33,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-14 17:12:33,473 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 70 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-14 17:12:33,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:12:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-14 17:12:33,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058952602] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:12:33,863 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 17:12:33,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 8] total 17 [2021-12-14 17:12:33,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801599302] [2021-12-14 17:12:33,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 17:12:33,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-14 17:12:33,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:33,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-14 17:12:33,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-12-14 17:12:33,865 INFO L87 Difference]: Start difference. First operand 3386 states and 4555 transitions. Second operand has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 12 states have internal predecessors, (109), 6 states have call successors, (29), 6 states have call predecessors, (29), 5 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) [2021-12-14 17:12:36,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:36,314 INFO L93 Difference]: Finished difference Result 5887 states and 7901 transitions. [2021-12-14 17:12:36,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 17:12:36,314 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 12 states have internal predecessors, (109), 6 states have call successors, (29), 6 states have call predecessors, (29), 5 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) Word has length 158 [2021-12-14 17:12:36,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:36,326 INFO L225 Difference]: With dead ends: 5887 [2021-12-14 17:12:36,327 INFO L226 Difference]: Without dead ends: 2739 [2021-12-14 17:12:36,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 340 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-12-14 17:12:36,337 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 162 mSDsluCounter, 3836 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 4519 SdHoareTripleChecker+Invalid, 1865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 293 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:36,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 4519 Invalid, 1865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1438 Invalid, 0 Unknown, 293 Unchecked, 2.3s Time] [2021-12-14 17:12:36,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2021-12-14 17:12:36,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2739. [2021-12-14 17:12:36,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2739 states, 1935 states have (on average 1.2227390180878552) internal successors, (2366), 1984 states have internal predecessors, (2366), 611 states have call successors, (611), 185 states have call predecessors, (611), 192 states have return successors, (672), 599 states have call predecessors, (672), 609 states have call successors, (672) [2021-12-14 17:12:36,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 3649 transitions. [2021-12-14 17:12:36,436 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 3649 transitions. Word has length 158 [2021-12-14 17:12:36,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:36,437 INFO L470 AbstractCegarLoop]: Abstraction has 2739 states and 3649 transitions. [2021-12-14 17:12:36,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 12 states have internal predecessors, (109), 6 states have call successors, (29), 6 states have call predecessors, (29), 5 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) [2021-12-14 17:12:36,438 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 3649 transitions. [2021-12-14 17:12:36,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-14 17:12:36,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:36,441 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:12:36,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-14 17:12:36,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:12:36,667 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:36,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:36,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1436807920, now seen corresponding path program 1 times [2021-12-14 17:12:36,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:36,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219147045] [2021-12-14 17:12:36,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:36,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:36,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:12:36,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 17:12:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:12:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 17:12:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 17:12:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:12:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:12:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:12:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:12:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 17:12:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-14 17:12:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-14 17:12:36,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-12-14 17:12:36,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:36,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219147045] [2021-12-14 17:12:36,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219147045] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:12:36,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198312611] [2021-12-14 17:12:36,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:36,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:12:36,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:12:36,987 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:12:37,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-14 17:12:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:37,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 1967 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-14 17:12:37,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:12:38,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-14 17:12:38,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-14 17:12:38,055 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-12-14 17:12:38,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:12:38,378 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-12-14 17:12:38,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198312611] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-14 17:12:38,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-14 17:12:38,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 8] total 12 [2021-12-14 17:12:38,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315232071] [2021-12-14 17:12:38,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:12:38,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:12:38,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:38,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:12:38,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-14 17:12:38,381 INFO L87 Difference]: Start difference. First operand 2739 states and 3649 transitions. Second operand has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 4 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-14 17:12:38,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:38,909 INFO L93 Difference]: Finished difference Result 2872 states and 3811 transitions. [2021-12-14 17:12:38,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:12:38,910 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 4 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 168 [2021-12-14 17:12:38,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:38,923 INFO L225 Difference]: With dead ends: 2872 [2021-12-14 17:12:38,923 INFO L226 Difference]: Without dead ends: 2739 [2021-12-14 17:12:38,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 370 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-14 17:12:38,926 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 7 mSDsluCounter, 2632 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3319 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:38,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 3319 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 17:12:38,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2021-12-14 17:12:39,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2739. [2021-12-14 17:12:39,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2739 states, 1935 states have (on average 1.2217054263565892) internal successors, (2364), 1984 states have internal predecessors, (2364), 611 states have call successors, (611), 185 states have call predecessors, (611), 192 states have return successors, (672), 599 states have call predecessors, (672), 609 states have call successors, (672) [2021-12-14 17:12:39,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 3647 transitions. [2021-12-14 17:12:39,026 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 3647 transitions. Word has length 168 [2021-12-14 17:12:39,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:39,027 INFO L470 AbstractCegarLoop]: Abstraction has 2739 states and 3647 transitions. [2021-12-14 17:12:39,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 4 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-14 17:12:39,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 3647 transitions. [2021-12-14 17:12:39,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-14 17:12:39,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:39,030 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:12:39,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-14 17:12:39,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-14 17:12:39,243 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:39,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:39,244 INFO L85 PathProgramCache]: Analyzing trace with hash 2032139182, now seen corresponding path program 1 times [2021-12-14 17:12:39,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:39,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944429190] [2021-12-14 17:12:39,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:39,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-14 17:12:39,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-14 17:12:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:12:39,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 17:12:39,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-14 17:12:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:12:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:12:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:12:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-14 17:12:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-14 17:12:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-14 17:12:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-14 17:12:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:39,617 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-14 17:12:39,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:39,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944429190] [2021-12-14 17:12:39,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944429190] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:12:39,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143264135] [2021-12-14 17:12:39,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:39,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:12:39,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:12:39,620 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 17:12:39,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-14 17:12:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:40,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 1972 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-14 17:12:40,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:12:40,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-14 17:12:40,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-14 17:12:40,639 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-14 17:12:40,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-12-14 17:12:40,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:12:40,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-14 17:12:41,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-14 17:12:41,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-12-14 17:12:41,189 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-14 17:12:41,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2021-12-14 17:12:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 55 proven. 8 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-12-14 17:12:41,252 INFO L328 TraceCheckSpWp]: Computing backward predicates...