./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 e19ca921 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-dev-e19ca92 [2021-12-22 14:05:47,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:05:47,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:05:47,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:05:47,934 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:05:47,935 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:05:47,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:05:47,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:05:47,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:05:47,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:05:47,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:05:47,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:05:47,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:05:47,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:05:47,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:05:47,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:05:47,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:05:47,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:05:47,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:05:47,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:05:47,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:05:47,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:05:47,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:05:47,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:05:47,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:05:47,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:05:47,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:05:47,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:05:47,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:05:47,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:05:47,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:05:47,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:05:47,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:05:47,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:05:47,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:05:47,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:05:47,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:05:47,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:05:47,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:05:47,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:05:47,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:05:47,986 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:05:48,015 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:05:48,016 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:05:48,016 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:05:48,016 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:05:48,017 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:05:48,017 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:05:48,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:05:48,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:05:48,018 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:05:48,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:05:48,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:05:48,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:05:48,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:05:48,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:05:48,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:05:48,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:05:48,020 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:05:48,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:05:48,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:05:48,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:05:48,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:05:48,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:05:48,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:05:48,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:05:48,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:05:48,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:05:48,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:05:48,022 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:05:48,023 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:05:48,023 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:05:48,023 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:05:48,023 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70a2ace6fc40caa55e586c636402c0a5dfab1c8b77b7cf0fdf6a2120173a773c [2021-12-22 14:05:48,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:05:48,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:05:48,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:05:48,274 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:05:48,275 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:05:48,277 INFO L432 ainManager$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 [2021-12-22 14:05:48,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8614799b/cb85ad11771d49dfb17549892cea9d37/FLAGbf0b528b9 [2021-12-22 14:05:48,979 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:05:48,979 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 [2021-12-22 14:05:49,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8614799b/cb85ad11771d49dfb17549892cea9d37/FLAGbf0b528b9 [2021-12-22 14:05:49,139 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8614799b/cb85ad11771d49dfb17549892cea9d37 [2021-12-22 14:05:49,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:05:49,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:05:49,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:05:49,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:05:49,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:05:49,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:05:49" (1/1) ... [2021-12-22 14:05:49,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21a65bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:49, skipping insertion in model container [2021-12-22 14:05:49,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:05:49" (1/1) ... [2021-12-22 14:05:49,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:05:49,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:05:50,482 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-usb-catc.ko.cil.out.i[199632,199645] [2021-12-22 14:05:50,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:05:50,584 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:05:50,817 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] [2021-12-22 14:05:50,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:05:51,120 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:05:51,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:51 WrapperNode [2021-12-22 14:05:51,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:05:51,124 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:05:51,124 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:05:51,125 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:05:51,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:51" (1/1) ... [2021-12-22 14:05:51,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:51" (1/1) ... [2021-12-22 14:05:51,254 INFO L137 Inliner]: procedures = 142, calls = 839, calls flagged for inlining = 59, calls inlined = 40, statements flattened = 1657 [2021-12-22 14:05:51,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:05:51,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:05:51,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:05:51,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:05:51,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:51" (1/1) ... [2021-12-22 14:05:51,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:51" (1/1) ... [2021-12-22 14:05:51,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:51" (1/1) ... [2021-12-22 14:05:51,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:51" (1/1) ... [2021-12-22 14:05:51,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:51" (1/1) ... [2021-12-22 14:05:51,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:51" (1/1) ... [2021-12-22 14:05:51,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:51" (1/1) ... [2021-12-22 14:05:51,426 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:05:51,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:05:51,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:05:51,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:05:51,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:51" (1/1) ... [2021-12-22 14:05:51,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:05:51,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:05:51,459 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) [2021-12-22 14:05:51,483 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 [2021-12-22 14:05:51,496 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-22 14:05:51,496 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-22 14:05:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure catc_tx_run [2021-12-22 14:05:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_tx_run [2021-12-22 14:05:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 14:05:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-22 14:05:51,497 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-22 14:05:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 14:05:51,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 14:05:51,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:05:51,498 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-12-22 14:05:51,498 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-12-22 14:05:51,498 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-22 14:05:51,498 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-22 14:05:51,498 INFO L130 BoogieDeclarations]: Found specification of procedure catc_ctrl_run [2021-12-22 14:05:51,498 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_ctrl_run [2021-12-22 14:05:51,499 INFO L130 BoogieDeclarations]: Found specification of procedure catc_get_drvinfo [2021-12-22 14:05:51,499 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_get_drvinfo [2021-12-22 14:05:51,499 INFO L130 BoogieDeclarations]: Found specification of procedure catc_ctrl_msg [2021-12-22 14:05:51,499 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_ctrl_msg [2021-12-22 14:05:51,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 14:05:51,499 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 14:05:51,499 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-22 14:05:51,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-22 14:05:51,500 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:05:51,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:05:51,500 INFO L130 BoogieDeclarations]: Found specification of procedure catc_multicast [2021-12-22 14:05:51,500 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_multicast [2021-12-22 14:05:51,500 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-22 14:05:51,500 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-22 14:05:51,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:05:51,501 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-22 14:05:51,501 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-22 14:05:51,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2021-12-22 14:05:51,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2021-12-22 14:05:51,501 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-22 14:05:51,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-22 14:05:51,502 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-22 14:05:51,502 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-22 14:05:51,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 14:05:51,502 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 14:05:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-22 14:05:51,503 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-22 14:05:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:05:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2021-12-22 14:05:51,503 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2021-12-22 14:05:51,503 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-22 14:05:51,503 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-22 14:05:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-22 14:05:51,504 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-22 14:05:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:05:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:05:51,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:05:51,505 INFO L130 BoogieDeclarations]: Found specification of procedure catc_ctrl_async [2021-12-22 14:05:51,505 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_ctrl_async [2021-12-22 14:05:51,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:05:51,505 INFO L130 BoogieDeclarations]: Found specification of procedure catc_exit [2021-12-22 14:05:51,506 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_exit [2021-12-22 14:05:51,507 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-22 14:05:51,507 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-22 14:05:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-22 14:05:51,508 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-22 14:05:51,508 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-22 14:05:51,508 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-22 14:05:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure catc_init [2021-12-22 14:05:51,509 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_init [2021-12-22 14:05:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-12-22 14:05:51,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-12-22 14:05:51,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:05:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:05:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-22 14:05:51,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-22 14:05:51,510 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-22 14:05:51,511 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-22 14:05:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-22 14:05:51,511 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-22 14:05:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-22 14:05:51,511 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-22 14:05:51,511 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-22 14:05:51,512 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-22 14:05:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2021-12-22 14:05:51,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2021-12-22 14:05:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:05:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-22 14:05:51,512 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-22 14:05:51,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 14:05:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-12-22 14:05:51,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:05:51,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:05:51,876 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:05:51,878 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:05:52,530 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2021-12-22 14:05:52,575 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 14:05:52,584 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-22 14:05:53,491 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##191: assume false; [2021-12-22 14:05:53,492 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##192: assume !false; [2021-12-22 14:05:53,492 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2021-12-22 14:05:53,492 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2021-12-22 14:05:53,525 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:05:53,542 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:05:53,543 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-12-22 14:05:53,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:05:53 BoogieIcfgContainer [2021-12-22 14:05:53,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:05:53,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:05:53,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:05:53,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:05:53,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:05:49" (1/3) ... [2021-12-22 14:05:53,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e57b802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:05:53, skipping insertion in model container [2021-12-22 14:05:53,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:05:51" (2/3) ... [2021-12-22 14:05:53,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e57b802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:05:53, skipping insertion in model container [2021-12-22 14:05:53,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:05:53" (3/3) ... [2021-12-22 14:05:53,555 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-usb-catc.ko.cil.out.i [2021-12-22 14:05:53,560 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:05:53,561 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:05:53,618 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:05:53,625 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 [2021-12-22 14:05:53,626 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:05:53,665 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) [2021-12-22 14:05:53,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-22 14:05:53,673 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:05:53,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:05:53,674 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:05:53,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:05:53,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1343427639, now seen corresponding path program 1 times [2021-12-22 14:05:53,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:05:53,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682403941] [2021-12-22 14:05:53,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:05:53,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:05:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:54,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:05:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:54,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:05:54,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:05:54,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682403941] [2021-12-22 14:05:54,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682403941] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:05:54,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:05:54,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:05:54,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384727592] [2021-12-22 14:05:54,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:05:54,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:05:54,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:05:54,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:05:54,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:05:54,198 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 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) [2021-12-22 14:05:54,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:05:54,362 INFO L93 Difference]: Finished difference Result 1577 states and 2310 transitions. [2021-12-22 14:05:54,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:05:54,364 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 [2021-12-22 14:05:54,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:05:54,391 INFO L225 Difference]: With dead ends: 1577 [2021-12-22 14:05:54,391 INFO L226 Difference]: Without dead ends: 1043 [2021-12-22 14:05:54,402 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 [2021-12-22 14:05:54,406 INFO L933 BasicCegarLoop]: 980 mSDtfsCounter, 690 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 1659 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 [2021-12-22 14:05:54,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 1659 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:05:54,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-12-22 14:05:54,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1040. [2021-12-22 14:05:54,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 734 states have (on average 1.2179836512261581) internal successors, (894), 747 states have internal predecessors, (894), 238 states have call successors, (238), 68 states have call predecessors, (238), 67 states have return successors, (239), 233 states have call predecessors, (239), 235 states have call successors, (239) [2021-12-22 14:05:54,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1371 transitions. [2021-12-22 14:05:54,559 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1371 transitions. Word has length 17 [2021-12-22 14:05:54,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:05:54,559 INFO L470 AbstractCegarLoop]: Abstraction has 1040 states and 1371 transitions. [2021-12-22 14:05:54,560 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) [2021-12-22 14:05:54,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1371 transitions. [2021-12-22 14:05:54,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-22 14:05:54,561 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:05:54,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:05:54,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:05:54,562 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:05:54,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:05:54,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1303156656, now seen corresponding path program 1 times [2021-12-22 14:05:54,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:05:54,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046638322] [2021-12-22 14:05:54,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:05:54,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:05:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:54,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:05:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:54,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:05:54,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:05:54,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046638322] [2021-12-22 14:05:54,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046638322] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:05:54,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:05:54,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:05:54,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191897951] [2021-12-22 14:05:54,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:05:54,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:05:54,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:05:54,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:05:54,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:05:54,705 INFO L87 Difference]: Start difference. First operand 1040 states and 1371 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) [2021-12-22 14:05:54,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:05:54,746 INFO L93 Difference]: Finished difference Result 1042 states and 1372 transitions. [2021-12-22 14:05:54,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:05:54,748 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 [2021-12-22 14:05:54,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:05:54,755 INFO L225 Difference]: With dead ends: 1042 [2021-12-22 14:05:54,755 INFO L226 Difference]: Without dead ends: 1031 [2021-12-22 14:05:54,759 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 [2021-12-22 14:05:54,762 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 [2021-12-22 14:05:54,762 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] [2021-12-22 14:05:54,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2021-12-22 14:05:54,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1031. [2021-12-22 14:05:54,841 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) [2021-12-22 14:05:54,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1356 transitions. [2021-12-22 14:05:54,847 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1356 transitions. Word has length 18 [2021-12-22 14:05:54,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:05:54,848 INFO L470 AbstractCegarLoop]: Abstraction has 1031 states and 1356 transitions. [2021-12-22 14:05:54,848 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) [2021-12-22 14:05:54,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1356 transitions. [2021-12-22 14:05:54,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-22 14:05:54,856 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:05:54,857 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] [2021-12-22 14:05:54,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:05:54,857 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:05:54,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:05:54,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1305048404, now seen corresponding path program 1 times [2021-12-22 14:05:54,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:05:54,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874664791] [2021-12-22 14:05:54,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:05:54,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:05:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:54,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:05:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:55,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-22 14:05:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:55,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-22 14:05:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:55,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:05:55,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:05:55,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874664791] [2021-12-22 14:05:55,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874664791] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:05:55,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:05:55,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:05:55,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872767301] [2021-12-22 14:05:55,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:05:55,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:05:55,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:05:55,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:05:55,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:05:55,047 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) [2021-12-22 14:05:56,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:05:56,079 INFO L93 Difference]: Finished difference Result 2371 states and 3192 transitions. [2021-12-22 14:05:56,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 14:05:56,080 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 [2021-12-22 14:05:56,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:05:56,087 INFO L225 Difference]: With dead ends: 2371 [2021-12-22 14:05:56,088 INFO L226 Difference]: Without dead ends: 1352 [2021-12-22 14:05:56,092 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 [2021-12-22 14:05:56,093 INFO L933 BasicCegarLoop]: 774 mSDtfsCounter, 417 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1468 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 14:05:56,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 1468 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 14:05:56,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-12-22 14:05:56,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1330. [2021-12-22 14:05:56,144 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) [2021-12-22 14:05:56,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1804 transitions. [2021-12-22 14:05:56,152 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1804 transitions. Word has length 50 [2021-12-22 14:05:56,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:05:56,153 INFO L470 AbstractCegarLoop]: Abstraction has 1330 states and 1804 transitions. [2021-12-22 14:05:56,153 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) [2021-12-22 14:05:56,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1804 transitions. [2021-12-22 14:05:56,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-22 14:05:56,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:05:56,157 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] [2021-12-22 14:05:56,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:05:56,158 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:05:56,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:05:56,158 INFO L85 PathProgramCache]: Analyzing trace with hash -518166049, now seen corresponding path program 1 times [2021-12-22 14:05:56,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:05:56,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44829268] [2021-12-22 14:05:56,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:05:56,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:05:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:56,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:05:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:56,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 14:05:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:56,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:05:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:56,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 14:05:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:56,332 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:05:56,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:05:56,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44829268] [2021-12-22 14:05:56,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44829268] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:05:56,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:05:56,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:05:56,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722037517] [2021-12-22 14:05:56,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:05:56,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:05:56,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:05:56,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:05:56,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:05:56,334 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) [2021-12-22 14:05:57,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:05:57,662 INFO L93 Difference]: Finished difference Result 2687 states and 3650 transitions. [2021-12-22 14:05:57,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 14:05:57,663 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 [2021-12-22 14:05:57,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:05:57,671 INFO L225 Difference]: With dead ends: 2687 [2021-12-22 14:05:57,672 INFO L226 Difference]: Without dead ends: 1358 [2021-12-22 14:05:57,677 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 [2021-12-22 14:05:57,678 INFO L933 BasicCegarLoop]: 673 mSDtfsCounter, 173 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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 [2021-12-22 14:05:57,679 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] [2021-12-22 14:05:57,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2021-12-22 14:05:57,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1330. [2021-12-22 14:05:57,738 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) [2021-12-22 14:05:57,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1798 transitions. [2021-12-22 14:05:57,747 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1798 transitions. Word has length 72 [2021-12-22 14:05:57,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:05:57,747 INFO L470 AbstractCegarLoop]: Abstraction has 1330 states and 1798 transitions. [2021-12-22 14:05:57,747 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) [2021-12-22 14:05:57,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1798 transitions. [2021-12-22 14:05:57,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-22 14:05:57,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:05:57,750 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] [2021-12-22 14:05:57,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:05:57,751 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:05:57,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:05:57,752 INFO L85 PathProgramCache]: Analyzing trace with hash -2140419496, now seen corresponding path program 1 times [2021-12-22 14:05:57,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:05:57,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222560418] [2021-12-22 14:05:57,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:05:57,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:05:57,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:57,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:05:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:57,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:05:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:57,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-22 14:05:57,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:57,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-22 14:05:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:57,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:05:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:57,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 14:05:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:05:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 14:05:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:05:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:05:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 14:05:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:05:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:05:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 14:05:58,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:05:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:05:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-22 14:05:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:05:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:05:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,108 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-22 14:05:58,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:05:58,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222560418] [2021-12-22 14:05:58,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222560418] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:05:58,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263441793] [2021-12-22 14:05:58,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:05:58,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:05:58,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:05:58,115 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) [2021-12-22 14:05:58,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 14:05:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:05:58,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 1884 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-22 14:05:58,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:05:58,934 INFO L387 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 [2021-12-22 14:05:58,938 INFO L387 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 [2021-12-22 14:05:59,004 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-22 14:05:59,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:05:59,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263441793] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:05:59,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:05:59,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-12-22 14:05:59,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091323625] [2021-12-22 14:05:59,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:05:59,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:05:59,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:05:59,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:05:59,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-12-22 14:05:59,007 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) [2021-12-22 14:06:00,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:00,180 INFO L93 Difference]: Finished difference Result 1392 states and 1878 transitions. [2021-12-22 14:06:00,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 14:06:00,181 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 [2021-12-22 14:06:00,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:00,188 INFO L225 Difference]: With dead ends: 1392 [2021-12-22 14:06:00,189 INFO L226 Difference]: Without dead ends: 1332 [2021-12-22 14:06:00,190 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 [2021-12-22 14:06:00,191 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 4 mSDsluCounter, 3232 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:00,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3919 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 14:06:00,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2021-12-22 14:06:00,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1330. [2021-12-22 14:06:00,243 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) [2021-12-22 14:06:00,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1796 transitions. [2021-12-22 14:06:00,252 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1796 transitions. Word has length 146 [2021-12-22 14:06:00,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:00,253 INFO L470 AbstractCegarLoop]: Abstraction has 1330 states and 1796 transitions. [2021-12-22 14:06:00,253 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) [2021-12-22 14:06:00,254 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1796 transitions. [2021-12-22 14:06:00,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-22 14:06:00,261 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:00,262 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] [2021-12-22 14:06:00,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 14:06:00,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:06:00,488 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:00,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:00,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1832854936, now seen corresponding path program 1 times [2021-12-22 14:06:00,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:00,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142855235] [2021-12-22 14:06:00,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:00,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:06:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-22 14:06:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-22 14:06:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:06:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 14:06:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:06:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 14:06:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 14:06:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 14:06:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-22 14:06:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:00,865 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-22 14:06:00,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:00,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142855235] [2021-12-22 14:06:00,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142855235] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:06:00,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832826401] [2021-12-22 14:06:00,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:00,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:06:00,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:06:00,867 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) [2021-12-22 14:06:00,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 14:06:01,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:01,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 1889 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-22 14:06:01,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:06:01,669 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-22 14:06:01,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:06:01,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832826401] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:06:01,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:06:01,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 8 [2021-12-22 14:06:01,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302107490] [2021-12-22 14:06:01,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:06:01,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:06:01,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:01,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:06:01,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-22 14:06:01,672 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) [2021-12-22 14:06:01,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:01,779 INFO L93 Difference]: Finished difference Result 2671 states and 3611 transitions. [2021-12-22 14:06:01,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:06:01,779 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 [2021-12-22 14:06:01,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:01,789 INFO L225 Difference]: With dead ends: 2671 [2021-12-22 14:06:01,790 INFO L226 Difference]: Without dead ends: 1351 [2021-12-22 14:06:01,797 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 [2021-12-22 14:06:01,799 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 12 mSDsluCounter, 2785 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3488 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 [2021-12-22 14:06:01,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 3488 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:06:01,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-12-22 14:06:01,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1337. [2021-12-22 14:06:01,849 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) [2021-12-22 14:06:01,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1806 transitions. [2021-12-22 14:06:01,857 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1806 transitions. Word has length 147 [2021-12-22 14:06:01,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:01,859 INFO L470 AbstractCegarLoop]: Abstraction has 1337 states and 1806 transitions. [2021-12-22 14:06:01,859 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) [2021-12-22 14:06:01,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1806 transitions. [2021-12-22 14:06:01,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-22 14:06:01,862 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:01,862 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] [2021-12-22 14:06:01,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 14:06:02,083 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,SelfDestructingSolverStorable5 [2021-12-22 14:06:02,084 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:02,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:02,084 INFO L85 PathProgramCache]: Analyzing trace with hash -480950281, now seen corresponding path program 1 times [2021-12-22 14:06:02,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:02,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357110629] [2021-12-22 14:06:02,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:02,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:06:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-22 14:06:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-22 14:06:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:06:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 14:06:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:06:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 14:06:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 14:06:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 14:06:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-22 14:06:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,488 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-22 14:06:02,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:02,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357110629] [2021-12-22 14:06:02,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357110629] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:06:02,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62459588] [2021-12-22 14:06:02,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:02,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:06:02,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:06:02,490 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) [2021-12-22 14:06:02,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 14:06:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:02,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 1898 conjuncts, 71 conjunts are in the unsatisfiable core [2021-12-22 14:06:03,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:06:03,181 INFO L387 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 [2021-12-22 14:06:03,186 INFO L387 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 [2021-12-22 14:06:03,349 INFO L353 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-22 14:06:03,350 INFO L387 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 [2021-12-22 14:06:03,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:06:03,357 INFO L387 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 [2021-12-22 14:06:03,600 INFO L353 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-22 14:06:03,601 INFO L387 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 [2021-12-22 14:06:03,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:06:03,610 INFO L387 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 [2021-12-22 14:06:04,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:06:04,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:06:04,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:06:04,044 INFO L387 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 [2021-12-22 14:06:04,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:06:04,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:06:04,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:06:04,059 INFO L387 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 [2021-12-22 14:06:04,106 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-22 14:06:04,106 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:06:06,526 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-22 14:06:06,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62459588] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:06:06,526 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 14:06:06,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 8] total 19 [2021-12-22 14:06:06,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044218938] [2021-12-22 14:06:06,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 14:06:06,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-22 14:06:06,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:06,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-22 14:06:06,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-12-22 14:06:06,528 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) [2021-12-22 14:06:09,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:09,818 INFO L93 Difference]: Finished difference Result 2440 states and 3300 transitions. [2021-12-22 14:06:09,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-22 14:06:09,819 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 [2021-12-22 14:06:09,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:09,824 INFO L225 Difference]: With dead ends: 2440 [2021-12-22 14:06:09,825 INFO L226 Difference]: Without dead ends: 1024 [2021-12-22 14:06:09,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 315 SyntacticMatches, 9 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2021-12-22 14:06:09,831 INFO L933 BasicCegarLoop]: 693 mSDtfsCounter, 313 mSDsluCounter, 3865 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 4558 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 342 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:09,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 4558 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1345 Invalid, 0 Unknown, 342 Unchecked, 3.1s Time] [2021-12-22 14:06:09,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-12-22 14:06:09,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1008. [2021-12-22 14:06:09,865 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) [2021-12-22 14:06:09,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1336 transitions. [2021-12-22 14:06:09,869 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1336 transitions. Word has length 147 [2021-12-22 14:06:09,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:09,870 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1336 transitions. [2021-12-22 14:06:09,870 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) [2021-12-22 14:06:09,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1336 transitions. [2021-12-22 14:06:09,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-22 14:06:09,873 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:09,873 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] [2021-12-22 14:06:09,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 14:06:10,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:06:10,088 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:10,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:10,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1300549654, now seen corresponding path program 1 times [2021-12-22 14:06:10,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:10,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10942542] [2021-12-22 14:06:10,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:10,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:06:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-22 14:06:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-22 14:06:10,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:06:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 14:06:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:06:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 14:06:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 14:06:10,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:10,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 14:06:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-22 14:06:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:10,475 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-22 14:06:10,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:10,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10942542] [2021-12-22 14:06:10,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10942542] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:06:10,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356085693] [2021-12-22 14:06:10,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:10,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:06:10,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:06:10,477 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) [2021-12-22 14:06:10,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 14:06:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:11,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 1897 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-22 14:06:11,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:06:11,372 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-22 14:06:11,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:06:11,856 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-22 14:06:11,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356085693] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:06:11,857 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 14:06:11,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 7] total 16 [2021-12-22 14:06:11,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990707456] [2021-12-22 14:06:11,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 14:06:11,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-22 14:06:11,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:11,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-22 14:06:11,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-12-22 14:06:11,859 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) [2021-12-22 14:06:17,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:17,297 INFO L93 Difference]: Finished difference Result 2083 states and 2784 transitions. [2021-12-22 14:06:17,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-22 14:06:17,298 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 [2021-12-22 14:06:17,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:17,304 INFO L225 Difference]: With dead ends: 2083 [2021-12-22 14:06:17,305 INFO L226 Difference]: Without dead ends: 1389 [2021-12-22 14:06:17,308 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 [2021-12-22 14:06:17,309 INFO L933 BasicCegarLoop]: 915 mSDtfsCounter, 1391 mSDsluCounter, 5203 mSDsCounter, 0 mSdLazyCounter, 4322 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 6118 SdHoareTripleChecker+Invalid, 4969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 4322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:17,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1522 Valid, 6118 Invalid, 4969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 4322 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-12-22 14:06:17,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2021-12-22 14:06:17,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1364. [2021-12-22 14:06:17,362 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) [2021-12-22 14:06:17,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1813 transitions. [2021-12-22 14:06:17,368 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1813 transitions. Word has length 147 [2021-12-22 14:06:17,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:17,368 INFO L470 AbstractCegarLoop]: Abstraction has 1364 states and 1813 transitions. [2021-12-22 14:06:17,369 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) [2021-12-22 14:06:17,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1813 transitions. [2021-12-22 14:06:17,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-22 14:06:17,371 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:17,371 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] [2021-12-22 14:06:17,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 14:06:17,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:06:17,595 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:17,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:17,596 INFO L85 PathProgramCache]: Analyzing trace with hash -981047690, now seen corresponding path program 1 times [2021-12-22 14:06:17,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:17,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811776325] [2021-12-22 14:06:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:17,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:17,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:17,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:17,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:06:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:17,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-22 14:06:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:17,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-22 14:06:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:17,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:06:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:17,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 14:06:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:17,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:06:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:17,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 14:06:17,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:17,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:17,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:17,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 14:06:17,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:17,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:17,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:17,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:17,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 14:06:17,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:17,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:17,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:17,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-22 14:06:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:17,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:17,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:17,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-22 14:06:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-22 14:06:17,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:17,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811776325] [2021-12-22 14:06:17,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811776325] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:06:17,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83461572] [2021-12-22 14:06:17,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:17,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:06:17,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:06:17,952 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) [2021-12-22 14:06:17,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 14:06:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:18,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-22 14:06:18,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:06:18,803 INFO L387 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 [2021-12-22 14:06:18,805 INFO L387 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 [2021-12-22 14:06:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-22 14:06:18,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:06:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-22 14:06:19,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83461572] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-22 14:06:19,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-22 14:06:19,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 8] total 12 [2021-12-22 14:06:19,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792527700] [2021-12-22 14:06:19,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:06:19,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:06:19,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:19,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:06:19,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-22 14:06:19,117 INFO L87 Difference]: Start difference. First operand 1364 states and 1813 transitions. Second operand has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 4 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-22 14:06:19,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:19,698 INFO L93 Difference]: Finished difference Result 1429 states and 1891 transitions. [2021-12-22 14:06:19,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 14:06:19,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 4 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 157 [2021-12-22 14:06:19,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:19,707 INFO L225 Difference]: With dead ends: 1429 [2021-12-22 14:06:19,707 INFO L226 Difference]: Without dead ends: 1364 [2021-12-22 14:06:19,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 348 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-22 14:06:19,709 INFO L933 BasicCegarLoop]: 688 mSDtfsCounter, 6 mSDsluCounter, 2637 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3325 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:19,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 3325 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 14:06:19,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2021-12-22 14:06:19,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1364. [2021-12-22 14:06:19,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 967 states have (on average 1.221302998965874) internal successors, (1181), 989 states have internal predecessors, (1181), 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) [2021-12-22 14:06:19,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1812 transitions. [2021-12-22 14:06:19,761 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1812 transitions. Word has length 157 [2021-12-22 14:06:19,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:19,762 INFO L470 AbstractCegarLoop]: Abstraction has 1364 states and 1812 transitions. [2021-12-22 14:06:19,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 4 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-22 14:06:19,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1812 transitions. [2021-12-22 14:06:19,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-22 14:06:19,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:19,766 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, 1] [2021-12-22 14:06:19,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-22 14:06:19,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:06:19,992 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:19,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:19,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1916407917, now seen corresponding path program 1 times [2021-12-22 14:06:19,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:19,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687200916] [2021-12-22 14:06:19,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:19,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:06:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-22 14:06:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-22 14:06:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:06:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 14:06:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:06:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 14:06:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:20,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 14:06:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 14:06:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-22 14:06:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-22 14:06:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,300 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-22 14:06:20,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:20,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687200916] [2021-12-22 14:06:20,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687200916] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:06:20,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150517159] [2021-12-22 14:06:20,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:20,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:06:20,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:06:20,302 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) [2021-12-22 14:06:20,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 14:06:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:20,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1953 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-22 14:06:20,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:06:21,112 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-22 14:06:21,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:06:21,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150517159] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:06:21,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 14:06:21,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 10 [2021-12-22 14:06:21,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672656995] [2021-12-22 14:06:21,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:06:21,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:06:21,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:21,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:06:21,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:06:21,114 INFO L87 Difference]: Start difference. First operand 1364 states and 1812 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 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) [2021-12-22 14:06:21,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:21,167 INFO L93 Difference]: Finished difference Result 2402 states and 3215 transitions. [2021-12-22 14:06:21,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 14:06:21,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 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 158 [2021-12-22 14:06:21,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:21,176 INFO L225 Difference]: With dead ends: 2402 [2021-12-22 14:06:21,176 INFO L226 Difference]: Without dead ends: 1364 [2021-12-22 14:06:21,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 193 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:06:21,181 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 [2021-12-22 14:06:21,181 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] [2021-12-22 14:06:21,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2021-12-22 14:06:21,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1362. [2021-12-22 14:06:21,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 965 states have (on average 1.2207253886010363) internal successors, (1178), 988 states have internal predecessors, (1178), 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) [2021-12-22 14:06:21,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1809 transitions. [2021-12-22 14:06:21,231 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1809 transitions. Word has length 158 [2021-12-22 14:06:21,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:21,232 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 1809 transitions. [2021-12-22 14:06:21,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 5 states have internal predecessors, (93), 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) [2021-12-22 14:06:21,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1809 transitions. [2021-12-22 14:06:21,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-22 14:06:21,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:21,234 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, 1] [2021-12-22 14:06:21,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-22 14:06:21,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:06:21,459 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:21,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:21,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1960882547, now seen corresponding path program 2 times [2021-12-22 14:06:21,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:21,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123498809] [2021-12-22 14:06:21,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:21,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:21,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:21,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:21,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:06:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:21,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-22 14:06:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:21,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-22 14:06:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:21,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:06:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:21,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 14:06:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:21,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:06:21,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:21,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 14:06:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:21,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:21,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:21,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 14:06:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:21,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:21,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:21,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 14:06:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:21,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:21,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:21,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-22 14:06:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:21,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:21,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:21,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-22 14:06:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-22 14:06:21,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:21,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123498809] [2021-12-22 14:06:21,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123498809] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:06:21,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949922927] [2021-12-22 14:06:21,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 14:06:21,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:06:21,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:06:21,815 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) [2021-12-22 14:06:21,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 14:06:22,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 14:06:22,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 14:06:22,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 1951 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-22 14:06:22,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:06:22,696 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-22 14:06:22,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:06:23,216 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-22 14:06:23,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949922927] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:06:23,217 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 14:06:23,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 14] total 24 [2021-12-22 14:06:23,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461792807] [2021-12-22 14:06:23,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 14:06:23,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-22 14:06:23,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:23,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-22 14:06:23,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2021-12-22 14:06:23,219 INFO L87 Difference]: Start difference. First operand 1362 states and 1809 transitions. Second operand has 24 states, 24 states have (on average 9.291666666666666) internal successors, (223), 22 states have internal predecessors, (223), 15 states have call successors, (47), 13 states have call predecessors, (47), 12 states have return successors, (41), 13 states have call predecessors, (41), 14 states have call successors, (41) [2021-12-22 14:06:29,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:29,290 INFO L93 Difference]: Finished difference Result 3460 states and 4627 transitions. [2021-12-22 14:06:29,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-22 14:06:29,291 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 9.291666666666666) internal successors, (223), 22 states have internal predecessors, (223), 15 states have call successors, (47), 13 states have call predecessors, (47), 12 states have return successors, (41), 13 states have call predecessors, (41), 14 states have call successors, (41) Word has length 158 [2021-12-22 14:06:29,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:29,308 INFO L225 Difference]: With dead ends: 3460 [2021-12-22 14:06:29,308 INFO L226 Difference]: Without dead ends: 3457 [2021-12-22 14:06:29,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=457, Invalid=1103, Unknown=0, NotChecked=0, Total=1560 [2021-12-22 14:06:29,311 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 5860 mSDsluCounter, 3301 mSDsCounter, 0 mSdLazyCounter, 5634 mSolverCounterSat, 2672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6202 SdHoareTripleChecker+Valid, 4289 SdHoareTripleChecker+Invalid, 8306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2672 IncrementalHoareTripleChecker+Valid, 5634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:29,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6202 Valid, 4289 Invalid, 8306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2672 Valid, 5634 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-12-22 14:06:29,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2021-12-22 14:06:29,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 3386. [2021-12-22 14:06:29,437 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) [2021-12-22 14:06:29,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 4555 transitions. [2021-12-22 14:06:29,450 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 4555 transitions. Word has length 158 [2021-12-22 14:06:29,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:29,451 INFO L470 AbstractCegarLoop]: Abstraction has 3386 states and 4555 transitions. [2021-12-22 14:06:29,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 9.291666666666666) internal successors, (223), 22 states have internal predecessors, (223), 15 states have call successors, (47), 13 states have call predecessors, (47), 12 states have return successors, (41), 13 states have call predecessors, (41), 14 states have call successors, (41) [2021-12-22 14:06:29,451 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 4555 transitions. [2021-12-22 14:06:29,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-22 14:06:29,454 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:29,454 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] [2021-12-22 14:06:29,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-22 14:06:29,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:06:29,679 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:29,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:29,680 INFO L85 PathProgramCache]: Analyzing trace with hash 507809139, now seen corresponding path program 3 times [2021-12-22 14:06:29,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:29,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484545228] [2021-12-22 14:06:29,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:29,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:29,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 14:06:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:29,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:06:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:29,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-22 14:06:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:29,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-22 14:06:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:29,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-22 14:06:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:29,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-22 14:06:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:29,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 14:06:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:29,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 14:06:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:29,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:29,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:29,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 14:06:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:30,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 14:06:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-22 14:06:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:06:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-22 14:06:30,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-22 14:06:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:06:30,058 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-22 14:06:30,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:06:30,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484545228] [2021-12-22 14:06:30,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484545228] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 14:06:30,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324302900] [2021-12-22 14:06:30,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-22 14:06:30,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:06:30,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:06:30,060 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) [2021-12-22 14:06:30,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-22 14:06:30,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-22 14:06:30,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 14:06:30,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 1567 conjuncts, 59 conjunts are in the unsatisfiable core [2021-12-22 14:06:30,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:06:30,911 INFO L387 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 [2021-12-22 14:06:30,916 INFO L387 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 [2021-12-22 14:06:31,058 INFO L353 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-22 14:06:31,058 INFO L387 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 [2021-12-22 14:06:31,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:06:31,062 INFO L387 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 [2021-12-22 14:06:31,250 INFO L353 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-22 14:06:31,250 INFO L387 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 [2021-12-22 14:06:31,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:06:31,258 INFO L387 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 [2021-12-22 14:06:37,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:06:37,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:06:37,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-22 14:06:37,581 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 13 [2021-12-22 14:06:37,585 INFO L353 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-12-22 14:06:37,585 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2021-12-22 14:06:37,643 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 71 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-22 14:06:37,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 14:06:38,049 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-22 14:06:38,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324302900] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 14:06:38,049 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 14:06:38,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 10] total 21 [2021-12-22 14:06:38,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758493348] [2021-12-22 14:06:38,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 14:06:38,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-22 14:06:38,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:06:38,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-22 14:06:38,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=351, Unknown=3, NotChecked=0, Total=420 [2021-12-22 14:06:38,052 INFO L87 Difference]: Start difference. First operand 3386 states and 4555 transitions. Second operand has 21 states, 20 states have (on average 6.1) internal successors, (122), 15 states have internal predecessors, (122), 8 states have call successors, (30), 8 states have call predecessors, (30), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2021-12-22 14:06:44,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:06:44,090 INFO L93 Difference]: Finished difference Result 5887 states and 7901 transitions. [2021-12-22 14:06:44,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 14:06:44,091 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 6.1) internal successors, (122), 15 states have internal predecessors, (122), 8 states have call successors, (30), 8 states have call predecessors, (30), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) Word has length 158 [2021-12-22 14:06:44,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:06:44,103 INFO L225 Difference]: With dead ends: 5887 [2021-12-22 14:06:44,103 INFO L226 Difference]: Without dead ends: 2739 [2021-12-22 14:06:44,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 338 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=100, Invalid=546, Unknown=4, NotChecked=0, Total=650 [2021-12-22 14:06:44,112 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 160 mSDsluCounter, 6325 mSDsCounter, 0 mSdLazyCounter, 2241 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 7008 SdHoareTripleChecker+Invalid, 2694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 2241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 317 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:06:44,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 7008 Invalid, 2694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 2241 Invalid, 0 Unknown, 317 Unchecked, 3.8s Time] [2021-12-22 14:06:44,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2021-12-22 14:06:44,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2739. [2021-12-22 14:06:44,205 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) [2021-12-22 14:06:44,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 3649 transitions. [2021-12-22 14:06:44,214 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 3649 transitions. Word has length 158 [2021-12-22 14:06:44,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:06:44,215 INFO L470 AbstractCegarLoop]: Abstraction has 2739 states and 3649 transitions. [2021-12-22 14:06:44,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 6.1) internal successors, (122), 15 states have internal predecessors, (122), 8 states have call successors, (30), 8 states have call predecessors, (30), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2021-12-22 14:06:44,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 3649 transitions. [2021-12-22 14:06:44,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-22 14:06:44,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:06:44,218 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] [2021-12-22 14:06:44,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-22 14:06:44,431 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,SelfDestructingSolverStorable11 [2021-12-22 14:06:44,432 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:06:44,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:06:44,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1436807920, now seen corresponding path program 1 times [2021-12-22 14:06:44,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:06:44,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329533064] [2021-12-22 14:06:44,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:06:44,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:06:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat