./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 ae007674 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-ae00767 [2021-12-28 03:24:53,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:24:53,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:24:53,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:24:53,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:24:53,918 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:24:53,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:24:53,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:24:53,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:24:53,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:24:53,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:24:53,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:24:53,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:24:53,939 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:24:53,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:24:53,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:24:53,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:24:53,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:24:53,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:24:53,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:24:53,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:24:53,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:24:53,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:24:53,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:24:53,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:24:53,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:24:53,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:24:53,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:24:53,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:24:53,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:24:53,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:24:53,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:24:53,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:24:53,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:24:53,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:24:53,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:24:53,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:24:53,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:24:53,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:24:53,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:24:53,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:24:53,973 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 03:24:54,001 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:24:54,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:24:54,002 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:24:54,002 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:24:54,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:24:54,003 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:24:54,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:24:54,005 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:24:54,005 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:24:54,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:24:54,005 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:24:54,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:24:54,006 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:24:54,006 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:24:54,006 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:24:54,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:24:54,006 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:24:54,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:24:54,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:24:54,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:24:54,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:24:54,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:24:54,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:24:54,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:24:54,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:24:54,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:24:54,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:24:54,008 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:24:54,008 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:24:54,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:24:54,008 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70a2ace6fc40caa55e586c636402c0a5dfab1c8b77b7cf0fdf6a2120173a773c [2021-12-28 03:24:54,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:24:54,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:24:54,337 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:24:54,337 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:24:54,338 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:24:54,339 INFO L432 ainManager$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 [2021-12-28 03:24:54,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8540ea946/a6906a4f38fb4e028e01711867e0d6c4/FLAG33e85215f [2021-12-28 03:24:55,133 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:24:55,134 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 [2021-12-28 03:24:55,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8540ea946/a6906a4f38fb4e028e01711867e0d6c4/FLAG33e85215f [2021-12-28 03:24:55,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8540ea946/a6906a4f38fb4e028e01711867e0d6c4 [2021-12-28 03:24:55,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:24:55,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:24:55,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:24:55,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:24:55,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:24:55,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:24:55" (1/1) ... [2021-12-28 03:24:55,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1def912b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:24:55, skipping insertion in model container [2021-12-28 03:24:55,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:24:55" (1/1) ... [2021-12-28 03:24:55,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:24:55,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:24:56,415 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] [2021-12-28 03:24:56,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:24:56,481 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:24:56,677 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] [2021-12-28 03:24:56,696 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:24:56,907 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:24:56,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:24:56 WrapperNode [2021-12-28 03:24:56,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:24:56,910 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:24:56,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:24:56,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:24:56,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:24:56" (1/1) ... [2021-12-28 03:24:56,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:24:56" (1/1) ... [2021-12-28 03:24:57,049 INFO L137 Inliner]: procedures = 142, calls = 839, calls flagged for inlining = 59, calls inlined = 40, statements flattened = 1657 [2021-12-28 03:24:57,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:24:57,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:24:57,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:24:57,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:24:57,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:24:56" (1/1) ... [2021-12-28 03:24:57,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:24:56" (1/1) ... [2021-12-28 03:24:57,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:24:56" (1/1) ... [2021-12-28 03:24:57,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:24:56" (1/1) ... [2021-12-28 03:24:57,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:24:56" (1/1) ... [2021-12-28 03:24:57,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:24:56" (1/1) ... [2021-12-28 03:24:57,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:24:56" (1/1) ... [2021-12-28 03:24:57,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:24:57,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:24:57,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:24:57,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:24:57,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:24:56" (1/1) ... [2021-12-28 03:24:57,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:24:57,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:24:57,227 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) [2021-12-28 03:24:57,269 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 [2021-12-28 03:24:57,281 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-28 03:24:57,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-28 03:24:57,282 INFO L130 BoogieDeclarations]: Found specification of procedure catc_tx_run [2021-12-28 03:24:57,282 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_tx_run [2021-12-28 03:24:57,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 03:24:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-28 03:24:57,283 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-28 03:24:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 03:24:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 03:24:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:24:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2021-12-28 03:24:57,283 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2021-12-28 03:24:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-12-28 03:24:57,284 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-12-28 03:24:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure catc_ctrl_run [2021-12-28 03:24:57,284 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_ctrl_run [2021-12-28 03:24:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure catc_get_drvinfo [2021-12-28 03:24:57,284 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_get_drvinfo [2021-12-28 03:24:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure catc_ctrl_msg [2021-12-28 03:24:57,284 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_ctrl_msg [2021-12-28 03:24:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 03:24:57,284 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 03:24:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-28 03:24:57,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-28 03:24:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 03:24:57,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 03:24:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure catc_multicast [2021-12-28 03:24:57,285 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_multicast [2021-12-28 03:24:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-28 03:24:57,285 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-28 03:24:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:24:57,286 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-28 03:24:57,286 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-28 03:24:57,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2021-12-28 03:24:57,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2021-12-28 03:24:57,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-28 03:24:57,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-28 03:24:57,286 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-28 03:24:57,287 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-28 03:24:57,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 03:24:57,287 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 03:24:57,287 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-12-28 03:24:57,287 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-12-28 03:24:57,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:24:57,287 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2021-12-28 03:24:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2021-12-28 03:24:57,288 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-28 03:24:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-28 03:24:57,288 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-28 03:24:57,288 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-28 03:24:57,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:24:57,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:24:57,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 03:24:57,289 INFO L130 BoogieDeclarations]: Found specification of procedure catc_ctrl_async [2021-12-28 03:24:57,289 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_ctrl_async [2021-12-28 03:24:57,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 03:24:57,289 INFO L130 BoogieDeclarations]: Found specification of procedure catc_exit [2021-12-28 03:24:57,290 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_exit [2021-12-28 03:24:57,290 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-28 03:24:57,290 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-28 03:24:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-28 03:24:57,291 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-28 03:24:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-28 03:24:57,291 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-28 03:24:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure catc_init [2021-12-28 03:24:57,291 INFO L138 BoogieDeclarations]: Found implementation of procedure catc_init [2021-12-28 03:24:57,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-12-28 03:24:57,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-12-28 03:24:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:24:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 03:24:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-28 03:24:57,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-28 03:24:57,292 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-28 03:24:57,292 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-28 03:24:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-12-28 03:24:57,293 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-12-28 03:24:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-28 03:24:57,293 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-28 03:24:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-12-28 03:24:57,293 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-12-28 03:24:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2021-12-28 03:24:57,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2021-12-28 03:24:57,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:24:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-28 03:24:57,294 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-28 03:24:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 03:24:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-12-28 03:24:57,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:24:57,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:24:57,689 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:24:57,691 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:24:58,186 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2021-12-28 03:24:58,222 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-28 03:24:58,228 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-28 03:24:58,942 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##191: assume false; [2021-12-28 03:24:58,943 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##192: assume !false; [2021-12-28 03:24:58,943 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !false; [2021-12-28 03:24:58,943 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##37: assume false; [2021-12-28 03:24:58,956 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:24:58,963 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:24:58,963 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-12-28 03:24:58,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:24:58 BoogieIcfgContainer [2021-12-28 03:24:58,965 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:24:58,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:24:58,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:24:58,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:24:58,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:24:55" (1/3) ... [2021-12-28 03:24:58,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289bb7c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:24:58, skipping insertion in model container [2021-12-28 03:24:58,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:24:56" (2/3) ... [2021-12-28 03:24:58,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@289bb7c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:24:58, skipping insertion in model container [2021-12-28 03:24:58,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:24:58" (3/3) ... [2021-12-28 03:24:58,970 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-usb-catc.ko.cil.out.i [2021-12-28 03:24:58,973 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:24:58,973 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:24:59,002 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:24:59,007 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 [2021-12-28 03:24:59,007 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 03:24:59,023 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) [2021-12-28 03:24:59,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-28 03:24:59,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:24:59,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:24:59,027 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:24:59,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:24:59,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1343427639, now seen corresponding path program 1 times [2021-12-28 03:24:59,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:24:59,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631433585] [2021-12-28 03:24:59,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:24:59,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:24:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:24:59,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:24:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:24:59,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:24:59,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:24:59,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631433585] [2021-12-28 03:24:59,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631433585] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:24:59,325 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:24:59,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:24:59,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184655279] [2021-12-28 03:24:59,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:24:59,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:24:59,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:24:59,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:24:59,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:24:59,348 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) [2021-12-28 03:24:59,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:24:59,453 INFO L93 Difference]: Finished difference Result 1577 states and 2310 transitions. [2021-12-28 03:24:59,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:24:59,455 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 [2021-12-28 03:24:59,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:24:59,469 INFO L225 Difference]: With dead ends: 1577 [2021-12-28 03:24:59,469 INFO L226 Difference]: Without dead ends: 1043 [2021-12-28 03:24:59,474 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 [2021-12-28 03:24:59,476 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 [2021-12-28 03:24:59,477 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] [2021-12-28 03:24:59,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-12-28 03:24:59,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1040. [2021-12-28 03:24:59,559 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) [2021-12-28 03:24:59,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1371 transitions. [2021-12-28 03:24:59,566 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1371 transitions. Word has length 17 [2021-12-28 03:24:59,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:24:59,566 INFO L470 AbstractCegarLoop]: Abstraction has 1040 states and 1371 transitions. [2021-12-28 03:24:59,566 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) [2021-12-28 03:24:59,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1371 transitions. [2021-12-28 03:24:59,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 03:24:59,567 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:24:59,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:24:59,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:24:59,568 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:24:59,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:24:59,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1303156656, now seen corresponding path program 1 times [2021-12-28 03:24:59,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:24:59,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462455908] [2021-12-28 03:24:59,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:24:59,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:24:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:24:59,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:24:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:24:59,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:24:59,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:24:59,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462455908] [2021-12-28 03:24:59,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462455908] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:24:59,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:24:59,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:24:59,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550858364] [2021-12-28 03:24:59,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:24:59,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:24:59,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:24:59,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:24:59,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:24:59,698 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) [2021-12-28 03:24:59,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:24:59,721 INFO L93 Difference]: Finished difference Result 1042 states and 1372 transitions. [2021-12-28 03:24:59,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:24:59,721 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 [2021-12-28 03:24:59,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:24:59,726 INFO L225 Difference]: With dead ends: 1042 [2021-12-28 03:24:59,726 INFO L226 Difference]: Without dead ends: 1031 [2021-12-28 03:24:59,727 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 [2021-12-28 03:24:59,728 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 [2021-12-28 03:24:59,728 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] [2021-12-28 03:24:59,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2021-12-28 03:24:59,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1031. [2021-12-28 03:24:59,763 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) [2021-12-28 03:24:59,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1356 transitions. [2021-12-28 03:24:59,767 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1356 transitions. Word has length 18 [2021-12-28 03:24:59,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:24:59,768 INFO L470 AbstractCegarLoop]: Abstraction has 1031 states and 1356 transitions. [2021-12-28 03:24:59,768 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) [2021-12-28 03:24:59,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1356 transitions. [2021-12-28 03:24:59,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-28 03:24:59,770 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:24:59,770 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] [2021-12-28 03:24:59,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:24:59,771 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:24:59,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:24:59,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1305048404, now seen corresponding path program 1 times [2021-12-28 03:24:59,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:24:59,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026162289] [2021-12-28 03:24:59,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:24:59,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:24:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:24:59,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:24:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:24:59,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-28 03:24:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:24:59,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-28 03:24:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:24:59,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:24:59,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:24:59,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026162289] [2021-12-28 03:24:59,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026162289] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:24:59,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:24:59,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 03:24:59,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96401978] [2021-12-28 03:24:59,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:24:59,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 03:24:59,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:24:59,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 03:24:59,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 03:24:59,885 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) [2021-12-28 03:25:00,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:00,671 INFO L93 Difference]: Finished difference Result 2371 states and 3192 transitions. [2021-12-28 03:25:00,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 03:25:00,672 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 [2021-12-28 03:25:00,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:00,678 INFO L225 Difference]: With dead ends: 2371 [2021-12-28 03:25:00,679 INFO L226 Difference]: Without dead ends: 1352 [2021-12-28 03:25:00,683 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 [2021-12-28 03:25:00,687 INFO L933 BasicCegarLoop]: 773 mSDtfsCounter, 417 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:00,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 1400 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 03:25:00,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2021-12-28 03:25:00,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1330. [2021-12-28 03:25:00,733 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) [2021-12-28 03:25:00,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1804 transitions. [2021-12-28 03:25:00,739 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1804 transitions. Word has length 50 [2021-12-28 03:25:00,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:00,740 INFO L470 AbstractCegarLoop]: Abstraction has 1330 states and 1804 transitions. [2021-12-28 03:25:00,744 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) [2021-12-28 03:25:00,744 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1804 transitions. [2021-12-28 03:25:00,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-28 03:25:00,752 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:00,752 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] [2021-12-28 03:25:00,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:25:00,752 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:00,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:00,753 INFO L85 PathProgramCache]: Analyzing trace with hash -518166049, now seen corresponding path program 1 times [2021-12-28 03:25:00,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:00,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123506628] [2021-12-28 03:25:00,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:00,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:00,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:00,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 03:25:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:00,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:25:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:00,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-28 03:25:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:25:00,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:00,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123506628] [2021-12-28 03:25:00,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123506628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:00,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:25:00,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 03:25:00,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300780173] [2021-12-28 03:25:00,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:00,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 03:25:00,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:00,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 03:25:00,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 03:25:00,951 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) [2021-12-28 03:25:02,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:02,282 INFO L93 Difference]: Finished difference Result 2687 states and 3650 transitions. [2021-12-28 03:25:02,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 03:25:02,282 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 [2021-12-28 03:25:02,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:02,288 INFO L225 Difference]: With dead ends: 2687 [2021-12-28 03:25:02,288 INFO L226 Difference]: Without dead ends: 1358 [2021-12-28 03:25:02,292 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 [2021-12-28 03:25:02,292 INFO L933 BasicCegarLoop]: 673 mSDtfsCounter, 173 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 1795 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:02,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 1795 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-28 03:25:02,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1358 states. [2021-12-28 03:25:02,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1330. [2021-12-28 03:25:02,341 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) [2021-12-28 03:25:02,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1798 transitions. [2021-12-28 03:25:02,347 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1798 transitions. Word has length 72 [2021-12-28 03:25:02,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:02,347 INFO L470 AbstractCegarLoop]: Abstraction has 1330 states and 1798 transitions. [2021-12-28 03:25:02,347 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) [2021-12-28 03:25:02,347 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1798 transitions. [2021-12-28 03:25:02,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-28 03:25:02,349 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:02,349 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] [2021-12-28 03:25:02,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:25:02,349 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:02,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:02,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2140419496, now seen corresponding path program 1 times [2021-12-28 03:25:02,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:02,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896522753] [2021-12-28 03:25:02,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:02,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:02,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:02,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:02,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:25:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:02,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:25:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:02,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:25:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:02,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:25:02,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:02,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:25:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:02,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:25:02,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:02,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:25:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:02,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:02,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:02,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:25:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:02,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:02,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:02,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:25:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:02,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:02,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:02,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:25:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:02,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:02,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:02,583 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-28 03:25:02,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:02,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896522753] [2021-12-28 03:25:02,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896522753] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:25:02,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331699256] [2021-12-28 03:25:02,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:02,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:25:02,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:25:02,619 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) [2021-12-28 03:25:02,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:25:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:03,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 1884 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-28 03:25:03,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:25:03,332 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 [2021-12-28 03:25:03,338 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 [2021-12-28 03:25:03,403 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-28 03:25:03,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:25:03,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331699256] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:03,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:25:03,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-12-28 03:25:03,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554347144] [2021-12-28 03:25:03,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:03,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:25:03,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:03,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:25:03,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:25:03,406 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) [2021-12-28 03:25:04,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:04,280 INFO L93 Difference]: Finished difference Result 1392 states and 1878 transitions. [2021-12-28 03:25:04,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:25:04,280 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 [2021-12-28 03:25:04,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:04,285 INFO L225 Difference]: With dead ends: 1392 [2021-12-28 03:25:04,285 INFO L226 Difference]: Without dead ends: 1332 [2021-12-28 03:25:04,286 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 [2021-12-28 03:25:04,287 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 4 mSDsluCounter, 3232 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.8s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:04,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3919 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-28 03:25:04,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2021-12-28 03:25:04,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1330. [2021-12-28 03:25:04,315 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) [2021-12-28 03:25:04,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1796 transitions. [2021-12-28 03:25:04,319 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1796 transitions. Word has length 146 [2021-12-28 03:25:04,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:04,320 INFO L470 AbstractCegarLoop]: Abstraction has 1330 states and 1796 transitions. [2021-12-28 03:25:04,320 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) [2021-12-28 03:25:04,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1796 transitions. [2021-12-28 03:25:04,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-28 03:25:04,322 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:04,322 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] [2021-12-28 03:25:04,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-28 03:25:04,542 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 [2021-12-28 03:25:04,542 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:04,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:04,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1832854936, now seen corresponding path program 1 times [2021-12-28 03:25:04,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:04,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952166799] [2021-12-28 03:25:04,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:04,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:25:04,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:25:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:25:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:25:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:25:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:25:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:25:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:25:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:25:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:04,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:25:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-12-28 03:25:04,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:04,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952166799] [2021-12-28 03:25:04,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952166799] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:25:04,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044901045] [2021-12-28 03:25:04,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:04,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:25:04,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:25:04,812 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) [2021-12-28 03:25:04,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:25:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:05,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 1889 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-28 03:25:05,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:25:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-28 03:25:05,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:25:05,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044901045] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:05,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:25:05,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 8 [2021-12-28 03:25:05,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587241396] [2021-12-28 03:25:05,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:05,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:25:05,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:05,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:25:05,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:25:05,533 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) [2021-12-28 03:25:05,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:05,609 INFO L93 Difference]: Finished difference Result 2671 states and 3611 transitions. [2021-12-28 03:25:05,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:25:05,610 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 [2021-12-28 03:25:05,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:05,616 INFO L225 Difference]: With dead ends: 2671 [2021-12-28 03:25:05,616 INFO L226 Difference]: Without dead ends: 1351 [2021-12-28 03:25:05,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 182 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:25:05,620 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 [2021-12-28 03:25:05,620 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] [2021-12-28 03:25:05,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2021-12-28 03:25:05,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1337. [2021-12-28 03:25:05,652 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) [2021-12-28 03:25:05,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1806 transitions. [2021-12-28 03:25:05,658 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1806 transitions. Word has length 147 [2021-12-28 03:25:05,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:05,658 INFO L470 AbstractCegarLoop]: Abstraction has 1337 states and 1806 transitions. [2021-12-28 03:25:05,658 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) [2021-12-28 03:25:05,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1806 transitions. [2021-12-28 03:25:05,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-28 03:25:05,660 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:05,661 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] [2021-12-28 03:25:05,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:25:05,881 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 [2021-12-28 03:25:05,882 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:05,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:05,882 INFO L85 PathProgramCache]: Analyzing trace with hash -480950281, now seen corresponding path program 1 times [2021-12-28 03:25:05,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:05,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125659625] [2021-12-28 03:25:05,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:05,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:05,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:06,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:25:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:25:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:25:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:25:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:25:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:25:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:25:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:25:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:25:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:06,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:25:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,115 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-28 03:25:06,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:06,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125659625] [2021-12-28 03:25:06,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125659625] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:25:06,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968632582] [2021-12-28 03:25:06,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:06,116 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:25:06,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:25:06,117 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) [2021-12-28 03:25:06,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:25:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:06,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 1898 conjuncts, 71 conjunts are in the unsatisfiable core [2021-12-28 03:25:06,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:25:06,794 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 [2021-12-28 03:25:06,798 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 [2021-12-28 03:25:06,949 INFO L353 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-28 03:25:06,949 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 [2021-12-28 03:25:06,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:25:06,956 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 [2021-12-28 03:25:07,146 INFO L353 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-28 03:25:07,146 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 [2021-12-28 03:25:07,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:25:07,154 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 [2021-12-28 03:25:07,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:25:07,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:25:07,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:25:07,480 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 [2021-12-28 03:25:07,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:25:07,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:25:07,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:25:07,494 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 [2021-12-28 03:25:07,539 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-28 03:25:07,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:25:09,694 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-28 03:25:09,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968632582] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:25:09,695 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:25:09,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 8] total 19 [2021-12-28 03:25:09,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583266894] [2021-12-28 03:25:09,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:25:09,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-28 03:25:09,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:09,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-28 03:25:09,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-12-28 03:25:09,696 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) [2021-12-28 03:25:12,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:12,635 INFO L93 Difference]: Finished difference Result 2440 states and 3300 transitions. [2021-12-28 03:25:12,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-28 03:25:12,635 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 [2021-12-28 03:25:12,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:12,640 INFO L225 Difference]: With dead ends: 2440 [2021-12-28 03:25:12,640 INFO L226 Difference]: Without dead ends: 1024 [2021-12-28 03:25:12,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 315 SyntacticMatches, 9 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2021-12-28 03:25:12,643 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 313 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 3761 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 463 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:12,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [329 Valid, 3761 Invalid, 2759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 2029 Invalid, 0 Unknown, 463 Unchecked, 2.8s Time] [2021-12-28 03:25:12,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1024 states. [2021-12-28 03:25:12,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1024 to 1008. [2021-12-28 03:25:12,664 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) [2021-12-28 03:25:12,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1336 transitions. [2021-12-28 03:25:12,667 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1336 transitions. Word has length 147 [2021-12-28 03:25:12,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:12,667 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1336 transitions. [2021-12-28 03:25:12,667 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) [2021-12-28 03:25:12,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1336 transitions. [2021-12-28 03:25:12,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-28 03:25:12,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:12,669 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] [2021-12-28 03:25:12,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 03:25:12,885 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 [2021-12-28 03:25:12,886 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:12,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:12,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1300549654, now seen corresponding path program 1 times [2021-12-28 03:25:12,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:12,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007103340] [2021-12-28 03:25:12,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:12,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:12,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:12,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:25:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:12,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:25:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:12,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:25:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:12,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:25:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:12,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:25:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:12,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:25:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:12,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:25:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:25:13,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:25:13,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:25:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,190 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-28 03:25:13,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:13,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007103340] [2021-12-28 03:25:13,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007103340] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:25:13,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596932910] [2021-12-28 03:25:13,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:13,191 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:25:13,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:25:13,208 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) [2021-12-28 03:25:13,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:25:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:13,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 1897 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-28 03:25:13,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:25:13,984 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-28 03:25:13,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:25:14,382 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-28 03:25:14,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596932910] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:25:14,382 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:25:14,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 7] total 16 [2021-12-28 03:25:14,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736539919] [2021-12-28 03:25:14,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:25:14,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-28 03:25:14,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:14,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-28 03:25:14,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:25:14,386 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) [2021-12-28 03:25:19,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:19,358 INFO L93 Difference]: Finished difference Result 2083 states and 2784 transitions. [2021-12-28 03:25:19,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-28 03:25:19,359 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 [2021-12-28 03:25:19,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:19,364 INFO L225 Difference]: With dead ends: 2083 [2021-12-28 03:25:19,364 INFO L226 Difference]: Without dead ends: 1389 [2021-12-28 03:25:19,366 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 [2021-12-28 03:25:19,367 INFO L933 BasicCegarLoop]: 915 mSDtfsCounter, 1391 mSDsluCounter, 5038 mSDsCounter, 0 mSdLazyCounter, 4496 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 5953 SdHoareTripleChecker+Invalid, 5141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 4496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:19,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1522 Valid, 5953 Invalid, 5141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 4496 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-28 03:25:19,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2021-12-28 03:25:19,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1364. [2021-12-28 03:25:19,399 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) [2021-12-28 03:25:19,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1813 transitions. [2021-12-28 03:25:19,402 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1813 transitions. Word has length 147 [2021-12-28 03:25:19,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:19,402 INFO L470 AbstractCegarLoop]: Abstraction has 1364 states and 1813 transitions. [2021-12-28 03:25:19,402 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) [2021-12-28 03:25:19,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1813 transitions. [2021-12-28 03:25:19,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-28 03:25:19,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:19,404 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] [2021-12-28 03:25:19,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 03:25:19,622 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 [2021-12-28 03:25:19,623 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:19,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:19,623 INFO L85 PathProgramCache]: Analyzing trace with hash -981047690, now seen corresponding path program 1 times [2021-12-28 03:25:19,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:19,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101849368] [2021-12-28 03:25:19,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:19,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:25:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:25:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:25:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:25:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:25:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:25:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:25:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:25:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:25:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:19,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:25:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-28 03:25:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-28 03:25:19,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:19,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101849368] [2021-12-28 03:25:19,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101849368] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:25:19,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817555253] [2021-12-28 03:25:19,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:19,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:25:19,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:25:19,874 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) [2021-12-28 03:25:19,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:25:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:20,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-28 03:25:20,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:25:20,584 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 [2021-12-28 03:25:20,586 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 [2021-12-28 03:25:20,603 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-28 03:25:20,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:25:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-28 03:25:20,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817555253] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-28 03:25:20,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:25:20,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 8] total 12 [2021-12-28 03:25:20,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211253675] [2021-12-28 03:25:20,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:20,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:25:20,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:20,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:25:20,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:25:20,878 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) [2021-12-28 03:25:21,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:21,357 INFO L93 Difference]: Finished difference Result 1429 states and 1891 transitions. [2021-12-28 03:25:21,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:25:21,357 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 [2021-12-28 03:25:21,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:21,362 INFO L225 Difference]: With dead ends: 1429 [2021-12-28 03:25:21,362 INFO L226 Difference]: Without dead ends: 1364 [2021-12-28 03:25:21,363 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 [2021-12-28 03:25:21,363 INFO L933 BasicCegarLoop]: 688 mSDtfsCounter, 6 mSDsluCounter, 2637 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:21,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 3325 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 03:25:21,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2021-12-28 03:25:21,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1364. [2021-12-28 03:25:21,393 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) [2021-12-28 03:25:21,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1812 transitions. [2021-12-28 03:25:21,397 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1812 transitions. Word has length 157 [2021-12-28 03:25:21,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:21,397 INFO L470 AbstractCegarLoop]: Abstraction has 1364 states and 1812 transitions. [2021-12-28 03:25:21,397 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) [2021-12-28 03:25:21,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1812 transitions. [2021-12-28 03:25:21,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-28 03:25:21,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:21,399 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] [2021-12-28 03:25:21,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 03:25:21,619 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 [2021-12-28 03:25:21,619 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:21,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:21,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1916407917, now seen corresponding path program 1 times [2021-12-28 03:25:21,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:21,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77557631] [2021-12-28 03:25:21,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:21,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:25:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:25:21,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:25:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:25:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:25:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:25:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:25:21,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:25:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:21,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:25:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:25:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-28 03:25:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:21,823 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-28 03:25:21,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:21,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77557631] [2021-12-28 03:25:21,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77557631] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:25:21,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565337400] [2021-12-28 03:25:21,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:21,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:25:21,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:25:21,825 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) [2021-12-28 03:25:21,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 03:25:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:22,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 1953 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-28 03:25:22,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:25:22,514 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-28 03:25:22,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:25:22,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565337400] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:22,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:25:22,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 10 [2021-12-28 03:25:22,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414240989] [2021-12-28 03:25:22,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:22,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:25:22,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:22,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:25:22,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:25:22,516 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) [2021-12-28 03:25:22,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:22,583 INFO L93 Difference]: Finished difference Result 2402 states and 3215 transitions. [2021-12-28 03:25:22,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:25:22,584 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 [2021-12-28 03:25:22,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:22,588 INFO L225 Difference]: With dead ends: 2402 [2021-12-28 03:25:22,588 INFO L226 Difference]: Without dead ends: 1364 [2021-12-28 03:25:22,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 193 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-28 03:25:22,590 INFO L933 BasicCegarLoop]: 689 mSDtfsCounter, 2 mSDsluCounter, 3441 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4130 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 [2021-12-28 03:25:22,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 4130 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 03:25:22,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2021-12-28 03:25:22,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1362. [2021-12-28 03:25:22,623 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) [2021-12-28 03:25:22,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1809 transitions. [2021-12-28 03:25:22,626 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1809 transitions. Word has length 158 [2021-12-28 03:25:22,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:22,626 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 1809 transitions. [2021-12-28 03:25:22,626 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) [2021-12-28 03:25:22,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1809 transitions. [2021-12-28 03:25:22,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-28 03:25:22,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:22,628 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] [2021-12-28 03:25:22,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 03:25:22,846 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 [2021-12-28 03:25:22,846 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:22,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:22,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1960882547, now seen corresponding path program 2 times [2021-12-28 03:25:22,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:22,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206979655] [2021-12-28 03:25:22,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:22,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:22,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:22,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:25:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:23,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:25:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:23,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:25:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:23,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:25:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:23,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:25:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:23,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:25:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:23,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:25:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:23,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:23,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:23,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:25:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:23,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:23,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:23,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:25:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:23,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:23,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:23,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:25:23,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:23,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:23,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:23,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-28 03:25:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:23,133 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-28 03:25:23,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:23,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206979655] [2021-12-28 03:25:23,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206979655] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:25:23,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382843957] [2021-12-28 03:25:23,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:25:23,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:25:23,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:25:23,134 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) [2021-12-28 03:25:23,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 03:25:23,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:25:23,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:25:23,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 1951 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-28 03:25:23,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:25:23,965 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-28 03:25:23,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:25:24,443 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-28 03:25:24,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382843957] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:25:24,443 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:25:24,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 14] total 24 [2021-12-28 03:25:24,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508163994] [2021-12-28 03:25:24,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:25:24,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-28 03:25:24,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:24,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-28 03:25:24,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2021-12-28 03:25:24,445 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) [2021-12-28 03:25:29,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:29,907 INFO L93 Difference]: Finished difference Result 3460 states and 4627 transitions. [2021-12-28 03:25:29,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-28 03:25:29,908 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 [2021-12-28 03:25:29,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:29,925 INFO L225 Difference]: With dead ends: 3460 [2021-12-28 03:25:29,925 INFO L226 Difference]: Without dead ends: 3457 [2021-12-28 03:25:29,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=457, Invalid=1103, Unknown=0, NotChecked=0, Total=1560 [2021-12-28 03:25:29,928 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 5860 mSDsluCounter, 3301 mSDsCounter, 0 mSdLazyCounter, 5634 mSolverCounterSat, 2672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s 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, 5.1s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:29,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6202 Valid, 4289 Invalid, 8306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2672 Valid, 5634 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-12-28 03:25:29,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3457 states. [2021-12-28 03:25:30,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3457 to 3386. [2021-12-28 03:25:30,016 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) [2021-12-28 03:25:30,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 4555 transitions. [2021-12-28 03:25:30,052 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 4555 transitions. Word has length 158 [2021-12-28 03:25:30,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:30,052 INFO L470 AbstractCegarLoop]: Abstraction has 3386 states and 4555 transitions. [2021-12-28 03:25:30,063 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) [2021-12-28 03:25:30,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 4555 transitions. [2021-12-28 03:25:30,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-28 03:25:30,070 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:30,070 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] [2021-12-28 03:25:30,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-28 03:25:30,284 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 [2021-12-28 03:25:30,284 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:30,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:30,284 INFO L85 PathProgramCache]: Analyzing trace with hash 507809139, now seen corresponding path program 3 times [2021-12-28 03:25:30,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:30,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692407857] [2021-12-28 03:25:30,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:30,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:30,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:30,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:25:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:30,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:25:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:30,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:25:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:30,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:25:30,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:30,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:25:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:30,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:25:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:30,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:25:30,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:30,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:30,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:30,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:30,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:25:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:30,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:30,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:30,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:30,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:25:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:30,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:30,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:30,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:30,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:25:30,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:30,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:30,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:30,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-28 03:25:30,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:30,517 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-28 03:25:30,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:30,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692407857] [2021-12-28 03:25:30,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692407857] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:25:30,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284806897] [2021-12-28 03:25:30,518 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 03:25:30,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:25:30,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:25:30,519 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) [2021-12-28 03:25:30,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 03:25:31,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-28 03:25:31,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:25:31,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 1567 conjuncts, 59 conjunts are in the unsatisfiable core [2021-12-28 03:25:31,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:25:31,330 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 [2021-12-28 03:25:31,334 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 [2021-12-28 03:25:31,511 INFO L353 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-28 03:25:31,512 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 [2021-12-28 03:25:31,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:25:31,516 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 [2021-12-28 03:25:31,669 INFO L353 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-28 03:25:31,670 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 [2021-12-28 03:25:31,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:25:31,674 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 [2021-12-28 03:25:35,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:25:35,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:25:35,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:25:35,970 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 [2021-12-28 03:25:35,974 INFO L353 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-12-28 03:25:35,974 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 [2021-12-28 03:25:36,020 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 71 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-28 03:25:36,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:25:36,394 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-28 03:25:36,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284806897] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:25:36,394 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:25:36,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 10] total 21 [2021-12-28 03:25:36,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875392591] [2021-12-28 03:25:36,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:25:36,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-28 03:25:36,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:36,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-28 03:25:36,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=352, Unknown=2, NotChecked=0, Total=420 [2021-12-28 03:25:36,397 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) [2021-12-28 03:25:42,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:42,564 INFO L93 Difference]: Finished difference Result 5887 states and 7901 transitions. [2021-12-28 03:25:42,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-28 03:25:42,564 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 [2021-12-28 03:25:42,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:42,573 INFO L225 Difference]: With dead ends: 5887 [2021-12-28 03:25:42,573 INFO L226 Difference]: Without dead ends: 2739 [2021-12-28 03:25:42,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 338 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=100, Invalid=547, Unknown=3, NotChecked=0, Total=650 [2021-12-28 03:25:42,594 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 160 mSDsluCounter, 5054 mSDsCounter, 0 mSdLazyCounter, 3277 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 5737 SdHoareTripleChecker+Invalid, 3849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 3277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 436 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:42,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 5737 Invalid, 3849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 3277 Invalid, 0 Unknown, 436 Unchecked, 4.0s Time] [2021-12-28 03:25:42,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2021-12-28 03:25:42,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2739. [2021-12-28 03:25:42,720 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) [2021-12-28 03:25:42,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 3649 transitions. [2021-12-28 03:25:42,733 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 3649 transitions. Word has length 158 [2021-12-28 03:25:42,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:42,733 INFO L470 AbstractCegarLoop]: Abstraction has 2739 states and 3649 transitions. [2021-12-28 03:25:42,734 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) [2021-12-28 03:25:42,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 3649 transitions. [2021-12-28 03:25:42,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-28 03:25:42,743 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:42,743 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] [2021-12-28 03:25:42,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-28 03:25:42,971 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 [2021-12-28 03:25:42,971 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:42,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:42,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1436807920, now seen corresponding path program 1 times [2021-12-28 03:25:42,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:42,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833995568] [2021-12-28 03:25:42,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:42,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:25:43,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:25:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:25:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:25:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:25:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:25:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:25:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:25:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:25:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:25:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-28 03:25:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-28 03:25:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,285 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-12-28 03:25:43,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:43,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833995568] [2021-12-28 03:25:43,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833995568] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:25:43,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246021006] [2021-12-28 03:25:43,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:43,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:25:43,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:25:43,300 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:25:43,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 03:25:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:43,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 1967 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-28 03:25:43,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:25:44,121 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 [2021-12-28 03:25:44,123 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 [2021-12-28 03:25:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-12-28 03:25:44,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:25:44,528 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-12-28 03:25:44,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246021006] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-28 03:25:44,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:25:44,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 8] total 12 [2021-12-28 03:25:44,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993888334] [2021-12-28 03:25:44,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:44,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:25:44,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:44,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:25:44,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:25:44,530 INFO L87 Difference]: Start difference. First operand 2739 states and 3649 transitions. Second operand has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 4 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-28 03:25:45,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:45,637 INFO L93 Difference]: Finished difference Result 2872 states and 3811 transitions. [2021-12-28 03:25:45,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:25:45,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 4 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 168 [2021-12-28 03:25:45,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:45,647 INFO L225 Difference]: With dead ends: 2872 [2021-12-28 03:25:45,647 INFO L226 Difference]: Without dead ends: 2739 [2021-12-28 03:25:45,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 370 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:25:45,648 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 6 mSDsluCounter, 3224 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3911 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:45,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 3911 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 03:25:45,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2021-12-28 03:25:45,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2739. [2021-12-28 03:25:45,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2739 states, 1935 states have (on average 1.2217054263565892) internal successors, (2364), 1984 states have internal predecessors, (2364), 611 states have call successors, (611), 185 states have call predecessors, (611), 192 states have return successors, (672), 599 states have call predecessors, (672), 609 states have call successors, (672) [2021-12-28 03:25:45,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2739 states to 2739 states and 3647 transitions. [2021-12-28 03:25:45,785 INFO L78 Accepts]: Start accepts. Automaton has 2739 states and 3647 transitions. Word has length 168 [2021-12-28 03:25:45,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:45,785 INFO L470 AbstractCegarLoop]: Abstraction has 2739 states and 3647 transitions. [2021-12-28 03:25:45,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 4 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-28 03:25:45,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2739 states and 3647 transitions. [2021-12-28 03:25:45,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-28 03:25:45,803 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:45,804 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:25:45,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-28 03:25:46,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-28 03:25:46,004 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:46,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:46,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2032139182, now seen corresponding path program 1 times [2021-12-28 03:25:46,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:46,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587193528] [2021-12-28 03:25:46,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:46,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:25:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:25:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:25:46,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:25:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:25:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:25:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:25:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:25:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:25:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:25:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 03:25:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-28 03:25:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,261 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-28 03:25:46,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:46,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587193528] [2021-12-28 03:25:46,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587193528] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:25:46,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824501152] [2021-12-28 03:25:46,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:46,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:25:46,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:25:46,263 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:25:46,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-28 03:25:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:46,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 1972 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-28 03:25:46,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:25:46,975 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 [2021-12-28 03:25:46,979 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 [2021-12-28 03:25:47,120 INFO L353 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-12-28 03:25:47,121 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 [2021-12-28 03:25:47,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:25:47,126 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 [2021-12-28 03:25:47,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 03:25:47,622 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 10 [2021-12-28 03:25:47,626 INFO L353 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-28 03:25:47,626 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 10 [2021-12-28 03:25:47,681 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 55 proven. 8 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-12-28 03:25:47,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:25:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-28 03:25:47,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824501152] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:25:47,987 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:25:47,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 8] total 17 [2021-12-28 03:25:47,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845041684] [2021-12-28 03:25:47,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:25:47,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-28 03:25:47,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:47,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-28 03:25:47,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-12-28 03:25:47,989 INFO L87 Difference]: Start difference. First operand 2739 states and 3647 transitions. Second operand has 17 states, 16 states have (on average 7.6875) internal successors, (123), 11 states have internal predecessors, (123), 7 states have call successors, (32), 8 states have call predecessors, (32), 5 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) [2021-12-28 03:25:50,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:50,749 INFO L93 Difference]: Finished difference Result 4560 states and 6039 transitions. [2021-12-28 03:25:50,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-28 03:25:50,750 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 7.6875) internal successors, (123), 11 states have internal predecessors, (123), 7 states have call successors, (32), 8 states have call predecessors, (32), 5 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) Word has length 169 [2021-12-28 03:25:50,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:50,771 INFO L225 Difference]: With dead ends: 4560 [2021-12-28 03:25:50,787 INFO L226 Difference]: Without dead ends: 2088 [2021-12-28 03:25:50,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 366 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2021-12-28 03:25:50,795 INFO L933 BasicCegarLoop]: 679 mSDtfsCounter, 318 mSDsluCounter, 4394 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 5073 SdHoareTripleChecker+Invalid, 3090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 779 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:50,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 5073 Invalid, 3090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 2046 Invalid, 0 Unknown, 779 Unchecked, 2.5s Time] [2021-12-28 03:25:50,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2021-12-28 03:25:50,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 2088. [2021-12-28 03:25:50,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2088 states, 1475 states have (on average 1.2169491525423728) internal successors, (1795), 1512 states have internal predecessors, (1795), 452 states have call successors, (452), 156 states have call predecessors, (452), 160 states have return successors, (488), 442 states have call predecessors, (488), 450 states have call successors, (488) [2021-12-28 03:25:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 2735 transitions. [2021-12-28 03:25:50,916 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 2735 transitions. Word has length 169 [2021-12-28 03:25:50,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:50,916 INFO L470 AbstractCegarLoop]: Abstraction has 2088 states and 2735 transitions. [2021-12-28 03:25:50,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 7.6875) internal successors, (123), 11 states have internal predecessors, (123), 7 states have call successors, (32), 8 states have call predecessors, (32), 5 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) [2021-12-28 03:25:50,917 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 2735 transitions. [2021-12-28 03:25:50,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-28 03:25:50,919 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:50,919 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:25:50,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-28 03:25:51,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-28 03:25:51,139 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:51,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:51,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1191246487, now seen corresponding path program 1 times [2021-12-28 03:25:51,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:51,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044409944] [2021-12-28 03:25:51,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:51,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:25:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:25:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:25:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:25:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:25:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:25:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:25:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:51,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:25:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:25:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:51,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:25:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 03:25:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-28 03:25:51,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-28 03:25:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:51,481 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-28 03:25:51,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:51,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044409944] [2021-12-28 03:25:51,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044409944] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:25:51,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757508173] [2021-12-28 03:25:51,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:51,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:25:51,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:25:51,483 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:25:51,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-28 03:25:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:52,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 2004 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-28 03:25:52,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:25:52,496 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 [2021-12-28 03:25:52,498 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 [2021-12-28 03:25:52,518 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-28 03:25:52,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:25:52,785 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-28 03:25:52,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757508173] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-28 03:25:52,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:25:52,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10, 8] total 12 [2021-12-28 03:25:52,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619505371] [2021-12-28 03:25:52,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:52,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:25:52,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:52,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:25:52,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:25:52,787 INFO L87 Difference]: Start difference. First operand 2088 states and 2735 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 03:25:53,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:53,746 INFO L93 Difference]: Finished difference Result 2154 states and 2794 transitions. [2021-12-28 03:25:53,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 03:25:53,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 179 [2021-12-28 03:25:53,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:53,753 INFO L225 Difference]: With dead ends: 2154 [2021-12-28 03:25:53,753 INFO L226 Difference]: Without dead ends: 2059 [2021-12-28 03:25:53,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 392 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-28 03:25:53,754 INFO L933 BasicCegarLoop]: 678 mSDtfsCounter, 7 mSDsluCounter, 3176 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3854 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:53,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 3854 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 03:25:53,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2021-12-28 03:25:53,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 2059. [2021-12-28 03:25:53,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2059 states, 1460 states have (on average 1.2184931506849315) internal successors, (1779), 1497 states have internal predecessors, (1779), 438 states have call successors, (438), 156 states have call predecessors, (438), 160 states have return successors, (464), 428 states have call predecessors, (464), 436 states have call successors, (464) [2021-12-28 03:25:53,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 2681 transitions. [2021-12-28 03:25:53,799 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 2681 transitions. Word has length 179 [2021-12-28 03:25:53,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:53,799 INFO L470 AbstractCegarLoop]: Abstraction has 2059 states and 2681 transitions. [2021-12-28 03:25:53,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 4 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-28 03:25:53,799 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 2681 transitions. [2021-12-28 03:25:53,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-12-28 03:25:53,803 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:53,803 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:25:53,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-28 03:25:54,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-28 03:25:54,025 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:54,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:54,025 INFO L85 PathProgramCache]: Analyzing trace with hash -730439303, now seen corresponding path program 1 times [2021-12-28 03:25:54,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:54,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620366523] [2021-12-28 03:25:54,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:54,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:25:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:25:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:25:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:25:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:25:54,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:25:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:25:54,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:25:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:25:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:25:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 03:25:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-28 03:25:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-28 03:25:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-28 03:25:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-28 03:25:54,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-28 03:25:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-28 03:25:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-28 03:25:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-28 03:25:54,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:54,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-28 03:25:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-28 03:25:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-28 03:25:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-12-28 03:25:54,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:54,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620366523] [2021-12-28 03:25:54,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620366523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:54,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:25:54,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-28 03:25:54,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847674434] [2021-12-28 03:25:54,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:54,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:25:54,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:54,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:25:54,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-28 03:25:54,329 INFO L87 Difference]: Start difference. First operand 2059 states and 2681 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 5 states have internal predecessors, (118), 3 states have call successors, (27), 5 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-28 03:25:56,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:56,987 INFO L93 Difference]: Finished difference Result 3837 states and 5036 transitions. [2021-12-28 03:25:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-28 03:25:56,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 5 states have internal predecessors, (118), 3 states have call successors, (27), 5 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 251 [2021-12-28 03:25:56,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:57,000 INFO L225 Difference]: With dead ends: 3837 [2021-12-28 03:25:57,003 INFO L226 Difference]: Without dead ends: 2092 [2021-12-28 03:25:57,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:25:57,008 INFO L933 BasicCegarLoop]: 637 mSDtfsCounter, 270 mSDsluCounter, 2197 mSDsCounter, 0 mSdLazyCounter, 1787 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 2048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 1787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:57,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 2834 Invalid, 2048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 1787 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-28 03:25:57,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2092 states. [2021-12-28 03:25:57,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2092 to 2052. [2021-12-28 03:25:57,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 1455 states have (on average 1.2192439862542956) internal successors, (1774), 1492 states have internal predecessors, (1774), 438 states have call successors, (438), 156 states have call predecessors, (438), 158 states have return successors, (461), 426 states have call predecessors, (461), 436 states have call successors, (461) [2021-12-28 03:25:57,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 2673 transitions. [2021-12-28 03:25:57,056 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 2673 transitions. Word has length 251 [2021-12-28 03:25:57,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:57,056 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 2673 transitions. [2021-12-28 03:25:57,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 5 states have internal predecessors, (118), 3 states have call successors, (27), 5 states have call predecessors, (27), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-12-28 03:25:57,056 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 2673 transitions. [2021-12-28 03:25:57,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-12-28 03:25:57,059 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:57,059 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:25:57,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 03:25:57,059 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:57,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:57,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1586354599, now seen corresponding path program 1 times [2021-12-28 03:25:57,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:57,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330509692] [2021-12-28 03:25:57,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:57,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:25:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:25:57,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:25:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:25:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:25:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:25:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:25:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:25:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:57,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:25:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:25:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 03:25:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-28 03:25:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-28 03:25:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-28 03:25:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-28 03:25:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-28 03:25:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-28 03:25:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-28 03:25:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-28 03:25:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-28 03:25:57,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-28 03:25:57,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2021-12-28 03:25:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:57,314 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-12-28 03:25:57,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:57,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330509692] [2021-12-28 03:25:57,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330509692] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:25:57,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:25:57,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 03:25:57,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845067534] [2021-12-28 03:25:57,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:25:57,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 03:25:57,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:25:57,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 03:25:57,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-28 03:25:57,316 INFO L87 Difference]: Start difference. First operand 2052 states and 2673 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-28 03:25:59,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 03:25:59,243 INFO L93 Difference]: Finished difference Result 2112 states and 2772 transitions. [2021-12-28 03:25:59,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:25:59,243 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 251 [2021-12-28 03:25:59,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 03:25:59,249 INFO L225 Difference]: With dead ends: 2112 [2021-12-28 03:25:59,249 INFO L226 Difference]: Without dead ends: 2102 [2021-12-28 03:25:59,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-12-28 03:25:59,250 INFO L933 BasicCegarLoop]: 808 mSDtfsCounter, 960 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-28 03:25:59,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1056 Valid, 2341 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-28 03:25:59,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2021-12-28 03:25:59,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 2052. [2021-12-28 03:25:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 1455 states have (on average 1.2185567010309277) internal successors, (1773), 1492 states have internal predecessors, (1773), 438 states have call successors, (438), 156 states have call predecessors, (438), 158 states have return successors, (461), 426 states have call predecessors, (461), 436 states have call successors, (461) [2021-12-28 03:25:59,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 2672 transitions. [2021-12-28 03:25:59,330 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 2672 transitions. Word has length 251 [2021-12-28 03:25:59,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 03:25:59,330 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 2672 transitions. [2021-12-28 03:25:59,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (27), 5 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2021-12-28 03:25:59,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 2672 transitions. [2021-12-28 03:25:59,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-12-28 03:25:59,332 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 03:25:59,333 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:25:59,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-28 03:25:59,333 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 03:25:59,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:25:59,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1150769733, now seen corresponding path program 1 times [2021-12-28 03:25:59,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:25:59,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320849111] [2021-12-28 03:25:59,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:59,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:25:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 03:25:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-28 03:25:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-28 03:25:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-28 03:25:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-28 03:25:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-28 03:25:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-28 03:25:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-28 03:25:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:59,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-28 03:25:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:59,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-28 03:25:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-28 03:25:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-28 03:25:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-28 03:25:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-28 03:25:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-28 03:25:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-28 03:25:59,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-28 03:25:59,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-28 03:25:59,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-28 03:25:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-28 03:25:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-28 03:25:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 03:25:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-28 03:25:59,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-28 03:25:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-28 03:25:59,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:25:59,627 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-12-28 03:25:59,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:25:59,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320849111] [2021-12-28 03:25:59,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320849111] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:25:59,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299146024] [2021-12-28 03:25:59,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:25:59,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:25:59,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:25:59,628 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:25:59,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process