./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.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 275849fbaca37e76eea790df33e2de383489441cc01df773179ecf6c76094336 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 02:20:35,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 02:20:35,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 02:20:35,944 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 02:20:35,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 02:20:35,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 02:20:35,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 02:20:35,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 02:20:35,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 02:20:35,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 02:20:35,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 02:20:35,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 02:20:35,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 02:20:35,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 02:20:35,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 02:20:35,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 02:20:35,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 02:20:35,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 02:20:35,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 02:20:35,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 02:20:35,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 02:20:35,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 02:20:35,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 02:20:35,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 02:20:35,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 02:20:35,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 02:20:35,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 02:20:35,992 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 02:20:35,993 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 02:20:35,994 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 02:20:35,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 02:20:35,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 02:20:35,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 02:20:35,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 02:20:35,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 02:20:36,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 02:20:36,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 02:20:36,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 02:20:36,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 02:20:36,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 02:20:36,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 02:20:36,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 02:20:36,038 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 02:20:36,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 02:20:36,041 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 02:20:36,041 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 02:20:36,042 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 02:20:36,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 02:20:36,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 02:20:36,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 02:20:36,044 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 02:20:36,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 02:20:36,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 02:20:36,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 02:20:36,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 02:20:36,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 02:20:36,045 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 02:20:36,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 02:20:36,046 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 02:20:36,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 02:20:36,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 02:20:36,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 02:20:36,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 02:20:36,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 02:20:36,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 02:20:36,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 02:20:36,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 02:20:36,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 02:20:36,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 02:20:36,048 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 02:20:36,048 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 02:20:36,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 02:20:36,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 02:20:36,049 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 275849fbaca37e76eea790df33e2de383489441cc01df773179ecf6c76094336 [2021-12-18 02:20:36,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 02:20:36,277 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 02:20:36,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 02:20:36,280 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 02:20:36,281 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 02:20:36,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i [2021-12-18 02:20:36,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6ffa3fe4/3c52a007737645d39a5cabf70d9c2a6a/FLAGd37810e85 [2021-12-18 02:20:36,974 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 02:20:36,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i [2021-12-18 02:20:37,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6ffa3fe4/3c52a007737645d39a5cabf70d9c2a6a/FLAGd37810e85 [2021-12-18 02:20:37,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6ffa3fe4/3c52a007737645d39a5cabf70d9c2a6a [2021-12-18 02:20:37,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 02:20:37,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 02:20:37,145 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 02:20:37,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 02:20:37,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 02:20:37,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 02:20:37" (1/1) ... [2021-12-18 02:20:37,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b9cf99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:20:37, skipping insertion in model container [2021-12-18 02:20:37,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 02:20:37" (1/1) ... [2021-12-18 02:20:37,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 02:20:37,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 02:20:38,034 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-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i[158757,158770] [2021-12-18 02:20:38,053 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 02:20:38,080 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 02:20:38,243 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-commit-tester/m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i[158757,158770] [2021-12-18 02:20:38,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 02:20:38,296 INFO L208 MainTranslator]: Completed translation [2021-12-18 02:20:38,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:20:38 WrapperNode [2021-12-18 02:20:38,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 02:20:38,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 02:20:38,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 02:20:38,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 02:20:38,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:20:38" (1/1) ... [2021-12-18 02:20:38,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:20:38" (1/1) ... [2021-12-18 02:20:38,481 INFO L137 Inliner]: procedures = 191, calls = 1267, calls flagged for inlining = 83, calls inlined = 83, statements flattened = 3340 [2021-12-18 02:20:38,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 02:20:38,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 02:20:38,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 02:20:38,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 02:20:38,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:20:38" (1/1) ... [2021-12-18 02:20:38,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:20:38" (1/1) ... [2021-12-18 02:20:38,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:20:38" (1/1) ... [2021-12-18 02:20:38,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:20:38" (1/1) ... [2021-12-18 02:20:38,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:20:38" (1/1) ... [2021-12-18 02:20:38,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:20:38" (1/1) ... [2021-12-18 02:20:38,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:20:38" (1/1) ... [2021-12-18 02:20:38,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 02:20:38,655 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 02:20:38,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 02:20:38,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 02:20:38,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:20:38" (1/1) ... [2021-12-18 02:20:38,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 02:20:38,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 02:20:38,724 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 02:20:38,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 02:20:38,765 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2021-12-18 02:20:38,775 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2021-12-18 02:20:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-18 02:20:38,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-18 02:20:38,775 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-18 02:20:38,776 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-18 02:20:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 02:20:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-18 02:20:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 02:20:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 02:20:38,776 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2021-12-18 02:20:38,776 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2021-12-18 02:20:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2021-12-18 02:20:38,777 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2021-12-18 02:20:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-18 02:20:38,777 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-18 02:20:38,777 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2021-12-18 02:20:38,779 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2021-12-18 02:20:38,779 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2021-12-18 02:20:38,779 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2021-12-18 02:20:38,779 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-18 02:20:38,779 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-18 02:20:38,779 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 02:20:38,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 02:20:38,780 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2021-12-18 02:20:38,780 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2021-12-18 02:20:38,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive_int [2021-12-18 02:20:38,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive_int [2021-12-18 02:20:38,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2021-12-18 02:20:38,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2021-12-18 02:20:38,781 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-12-18 02:20:38,781 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-12-18 02:20:38,781 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2021-12-18 02:20:38,781 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2021-12-18 02:20:38,781 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2021-12-18 02:20:38,782 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2021-12-18 02:20:38,782 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2021-12-18 02:20:38,782 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2021-12-18 02:20:38,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 02:20:38,782 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 02:20:38,782 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 02:20:38,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 02:20:38,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 02:20:38,783 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2021-12-18 02:20:38,783 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2021-12-18 02:20:38,783 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2021-12-18 02:20:38,783 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2021-12-18 02:20:38,784 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2021-12-18 02:20:38,784 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2021-12-18 02:20:38,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-18 02:20:38,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-18 02:20:38,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 02:20:38,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 02:20:38,784 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2021-12-18 02:20:38,785 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2021-12-18 02:20:38,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 02:20:38,786 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-12-18 02:20:38,786 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2021-12-18 02:20:38,787 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2021-12-18 02:20:38,787 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2021-12-18 02:20:38,788 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-18 02:20:38,788 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-18 02:20:38,788 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2021-12-18 02:20:38,788 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2021-12-18 02:20:38,788 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-12-18 02:20:38,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-12-18 02:20:38,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 02:20:38,789 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2021-12-18 02:20:38,789 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2021-12-18 02:20:38,789 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2021-12-18 02:20:38,789 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2021-12-18 02:20:38,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 02:20:38,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 02:20:38,789 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-18 02:20:38,790 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-18 02:20:38,790 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-18 02:20:38,790 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2021-12-18 02:20:38,791 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2021-12-18 02:20:38,791 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2021-12-18 02:20:38,791 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2021-12-18 02:20:38,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 02:20:38,791 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_sched_notrace [2021-12-18 02:20:38,792 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_sched_notrace [2021-12-18 02:20:38,792 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2021-12-18 02:20:38,792 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2021-12-18 02:20:38,792 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2021-12-18 02:20:38,792 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2021-12-18 02:20:38,793 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-18 02:20:38,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-18 02:20:38,793 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-18 02:20:38,793 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-18 02:20:38,794 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-18 02:20:38,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-18 02:20:38,794 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-18 02:20:38,794 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-18 02:20:38,795 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-18 02:20:38,795 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-18 02:20:38,795 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-12-18 02:20:38,795 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-12-18 02:20:38,796 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2021-12-18 02:20:38,797 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2021-12-18 02:20:38,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 02:20:38,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 02:20:38,797 INFO L130 BoogieDeclarations]: Found specification of procedure trace_kmalloc [2021-12-18 02:20:38,797 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_kmalloc [2021-12-18 02:20:38,798 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-18 02:20:38,798 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-18 02:20:38,798 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-18 02:20:38,798 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-18 02:20:38,798 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-18 02:20:38,798 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-18 02:20:38,798 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2021-12-18 02:20:38,799 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2021-12-18 02:20:38,799 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-18 02:20:38,799 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-18 02:20:38,799 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2021-12-18 02:20:38,800 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2021-12-18 02:20:38,800 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-18 02:20:38,801 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-18 02:20:38,803 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-18 02:20:38,803 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-18 02:20:38,803 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2021-12-18 02:20:38,804 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2021-12-18 02:20:38,806 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2021-12-18 02:20:38,806 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2021-12-18 02:20:38,806 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 02:20:38,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-18 02:20:38,806 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-18 02:20:38,812 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-18 02:20:38,812 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2021-12-18 02:20:38,812 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2021-12-18 02:20:38,812 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-18 02:20:38,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-18 02:20:38,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2021-12-18 02:20:38,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2021-12-18 02:20:38,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 02:20:38,813 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-18 02:20:38,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-18 02:20:38,813 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-12-18 02:20:38,813 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-12-18 02:20:38,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-18 02:20:38,814 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-18 02:20:38,814 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-18 02:20:38,814 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-18 02:20:38,814 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-18 02:20:38,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 02:20:38,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 02:20:38,814 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-18 02:20:38,815 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-18 02:20:39,415 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 02:20:39,417 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 02:20:54,243 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 02:20:54,271 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 02:20:54,271 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 02:20:54,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 02:20:54 BoogieIcfgContainer [2021-12-18 02:20:54,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 02:20:54,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 02:20:54,283 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 02:20:54,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 02:20:54,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 02:20:37" (1/3) ... [2021-12-18 02:20:54,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27645e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 02:20:54, skipping insertion in model container [2021-12-18 02:20:54,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 02:20:38" (2/3) ... [2021-12-18 02:20:54,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27645e58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 02:20:54, skipping insertion in model container [2021-12-18 02:20:54,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 02:20:54" (3/3) ... [2021-12-18 02:20:54,293 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-usb-gadget-g_printer-ko--106_1a--2b9ec6c-2.i [2021-12-18 02:20:54,297 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 02:20:54,297 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 02:20:54,341 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 02:20:54,347 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 02:20:54,347 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 02:20:54,386 INFO L276 IsEmpty]: Start isEmpty. Operand has 1225 states, 841 states have (on average 1.375743162901308) internal successors, (1157), 881 states have internal predecessors, (1157), 317 states have call successors, (317), 65 states have call predecessors, (317), 65 states have return successors, (317), 314 states have call predecessors, (317), 317 states have call successors, (317) [2021-12-18 02:20:54,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-18 02:20:54,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:20:54,391 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 02:20:54,391 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:20:54,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:20:54,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1560528525, now seen corresponding path program 1 times [2021-12-18 02:20:54,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:20:54,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363449113] [2021-12-18 02:20:54,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:20:54,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:20:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:20:55,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:20:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:20:55,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 02:20:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:20:55,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 02:20:55,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:20:55,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363449113] [2021-12-18 02:20:55,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363449113] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:20:55,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:20:55,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 02:20:55,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249554971] [2021-12-18 02:20:55,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:20:55,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 02:20:55,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:20:55,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 02:20:55,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 02:20:55,161 INFO L87 Difference]: Start difference. First operand has 1225 states, 841 states have (on average 1.375743162901308) internal successors, (1157), 881 states have internal predecessors, (1157), 317 states have call successors, (317), 65 states have call predecessors, (317), 65 states have return successors, (317), 314 states have call predecessors, (317), 317 states have call successors, (317) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 02:20:57,243 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:21:03,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:21:03,165 INFO L93 Difference]: Finished difference Result 3954 states and 5954 transitions. [2021-12-18 02:21:03,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 02:21:03,167 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-12-18 02:21:03,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:21:03,196 INFO L225 Difference]: With dead ends: 3954 [2021-12-18 02:21:03,197 INFO L226 Difference]: Without dead ends: 2729 [2021-12-18 02:21:03,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 02:21:03,214 INFO L933 BasicCegarLoop]: 2078 mSDtfsCounter, 2721 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 913 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3016 SdHoareTripleChecker+Valid, 4332 SdHoareTripleChecker+Invalid, 2031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 913 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-12-18 02:21:03,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3016 Valid, 4332 Invalid, 2031 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [913 Valid, 1117 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2021-12-18 02:21:03,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2729 states. [2021-12-18 02:21:03,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2729 to 2224. [2021-12-18 02:21:03,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2224 states, 1510 states have (on average 1.3543046357615893) internal successors, (2045), 1568 states have internal predecessors, (2045), 593 states have call successors, (593), 122 states have call predecessors, (593), 120 states have return successors, (584), 577 states have call predecessors, (584), 584 states have call successors, (584) [2021-12-18 02:21:03,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 3222 transitions. [2021-12-18 02:21:03,360 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 3222 transitions. Word has length 17 [2021-12-18 02:21:03,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:21:03,361 INFO L470 AbstractCegarLoop]: Abstraction has 2224 states and 3222 transitions. [2021-12-18 02:21:03,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 02:21:03,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 3222 transitions. [2021-12-18 02:21:03,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-18 02:21:03,362 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:21:03,362 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 02:21:03,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 02:21:03,362 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:21:03,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:21:03,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1132781344, now seen corresponding path program 1 times [2021-12-18 02:21:03,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:21:03,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478631813] [2021-12-18 02:21:03,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:21:03,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:21:03,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:21:03,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:21:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:21:03,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 02:21:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:21:03,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 02:21:03,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:21:03,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478631813] [2021-12-18 02:21:03,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478631813] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:21:03,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:21:03,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 02:21:03,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241773356] [2021-12-18 02:21:03,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:21:03,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 02:21:03,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:21:03,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 02:21:03,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 02:21:03,540 INFO L87 Difference]: Start difference. First operand 2224 states and 3222 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 02:21:05,566 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:21:09,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:21:09,596 INFO L93 Difference]: Finished difference Result 6504 states and 9632 transitions. [2021-12-18 02:21:09,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 02:21:09,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-12-18 02:21:09,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:21:09,624 INFO L225 Difference]: With dead ends: 6504 [2021-12-18 02:21:09,625 INFO L226 Difference]: Without dead ends: 5418 [2021-12-18 02:21:09,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 02:21:09,636 INFO L933 BasicCegarLoop]: 2798 mSDtfsCounter, 2384 mSDsluCounter, 2584 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 790 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2679 SdHoareTripleChecker+Valid, 5382 SdHoareTripleChecker+Invalid, 1929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 790 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-12-18 02:21:09,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2679 Valid, 5382 Invalid, 1929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [790 Valid, 1138 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2021-12-18 02:21:09,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5418 states. [2021-12-18 02:21:09,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5418 to 4408. [2021-12-18 02:21:09,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4408 states, 2997 states have (on average 1.3546880213546881) internal successors, (4060), 3107 states have internal predecessors, (4060), 1171 states have call successors, (1171), 243 states have call predecessors, (1171), 239 states have return successors, (1159), 1145 states have call predecessors, (1159), 1159 states have call successors, (1159) [2021-12-18 02:21:09,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4408 states to 4408 states and 6390 transitions. [2021-12-18 02:21:09,780 INFO L78 Accepts]: Start accepts. Automaton has 4408 states and 6390 transitions. Word has length 18 [2021-12-18 02:21:09,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:21:09,780 INFO L470 AbstractCegarLoop]: Abstraction has 4408 states and 6390 transitions. [2021-12-18 02:21:09,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 02:21:09,781 INFO L276 IsEmpty]: Start isEmpty. Operand 4408 states and 6390 transitions. [2021-12-18 02:21:09,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-18 02:21:09,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:21:09,782 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] [2021-12-18 02:21:09,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 02:21:09,782 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:21:09,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:21:09,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1342676608, now seen corresponding path program 1 times [2021-12-18 02:21:09,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:21:09,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021738557] [2021-12-18 02:21:09,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:21:09,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:21:09,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:21:09,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:21:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:21:09,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 02:21:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:21:09,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 02:21:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:21:09,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 02:21:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:21:09,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 02:21:09,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:21:09,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021738557] [2021-12-18 02:21:09,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021738557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:21:09,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:21:09,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 02:21:09,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097906056] [2021-12-18 02:21:09,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:21:09,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 02:21:09,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:21:09,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 02:21:09,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 02:21:09,980 INFO L87 Difference]: Start difference. First operand 4408 states and 6390 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-18 02:21:12,017 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:21:16,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:21:16,221 INFO L93 Difference]: Finished difference Result 11851 states and 17589 transitions. [2021-12-18 02:21:16,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 02:21:16,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2021-12-18 02:21:16,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:21:16,299 INFO L225 Difference]: With dead ends: 11851 [2021-12-18 02:21:16,300 INFO L226 Difference]: Without dead ends: 10750 [2021-12-18 02:21:16,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 02:21:16,319 INFO L933 BasicCegarLoop]: 2260 mSDtfsCounter, 2626 mSDsluCounter, 2154 mSDsCounter, 0 mSdLazyCounter, 1131 mSolverCounterSat, 903 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2917 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 2035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 903 IncrementalHoareTripleChecker+Valid, 1131 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-12-18 02:21:16,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2917 Valid, 4414 Invalid, 2035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [903 Valid, 1131 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2021-12-18 02:21:16,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10750 states. [2021-12-18 02:21:16,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10750 to 7676. [2021-12-18 02:21:16,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7676 states, 5224 states have (on average 1.354709035222052) internal successors, (7077), 5414 states have internal predecessors, (7077), 2033 states have call successors, (2033), 424 states have call predecessors, (2033), 418 states have return successors, (2019), 1991 states have call predecessors, (2019), 2019 states have call successors, (2019) [2021-12-18 02:21:16,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7676 states to 7676 states and 11129 transitions. [2021-12-18 02:21:16,699 INFO L78 Accepts]: Start accepts. Automaton has 7676 states and 11129 transitions. Word has length 36 [2021-12-18 02:21:16,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:21:16,700 INFO L470 AbstractCegarLoop]: Abstraction has 7676 states and 11129 transitions. [2021-12-18 02:21:16,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-18 02:21:16,700 INFO L276 IsEmpty]: Start isEmpty. Operand 7676 states and 11129 transitions. [2021-12-18 02:21:16,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-18 02:21:16,705 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:21:16,705 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] [2021-12-18 02:21:16,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 02:21:16,705 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:21:16,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:21:16,705 INFO L85 PathProgramCache]: Analyzing trace with hash 2327976, now seen corresponding path program 1 times [2021-12-18 02:21:16,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:21:16,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126971623] [2021-12-18 02:21:16,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:21:16,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:21:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:21:17,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:21:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:21:17,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 02:21:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:21:17,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 02:21:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:21:17,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 02:21:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:21:17,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 02:21:17,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:21:17,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126971623] [2021-12-18 02:21:17,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126971623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:21:17,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:21:17,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-18 02:21:17,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442376594] [2021-12-18 02:21:17,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:21:17,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-18 02:21:17,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:21:17,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-18 02:21:17,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-12-18 02:21:17,629 INFO L87 Difference]: Start difference. First operand 7676 states and 11129 transitions. Second operand has 14 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 10 states have internal predecessors, (29), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-18 02:21:19,673 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:21:37,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:21:37,463 INFO L93 Difference]: Finished difference Result 22061 states and 32715 transitions. [2021-12-18 02:21:37,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-18 02:21:37,464 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 10 states have internal predecessors, (29), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2021-12-18 02:21:37,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:21:37,589 INFO L225 Difference]: With dead ends: 22061 [2021-12-18 02:21:37,589 INFO L226 Difference]: Without dead ends: 16650 [2021-12-18 02:21:37,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=124, Invalid=746, Unknown=0, NotChecked=0, Total=870 [2021-12-18 02:21:37,620 INFO L933 BasicCegarLoop]: 2613 mSDtfsCounter, 3303 mSDsluCounter, 24820 mSDsCounter, 0 mSdLazyCounter, 8542 mSolverCounterSat, 1477 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3600 SdHoareTripleChecker+Valid, 27433 SdHoareTripleChecker+Invalid, 10020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1477 IncrementalHoareTripleChecker+Valid, 8542 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2021-12-18 02:21:37,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3600 Valid, 27433 Invalid, 10020 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1477 Valid, 8542 Invalid, 1 Unknown, 0 Unchecked, 18.6s Time] [2021-12-18 02:21:37,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16650 states. [2021-12-18 02:21:38,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16650 to 10978. [2021-12-18 02:21:38,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10978 states, 7469 states have (on average 1.3542642924086223) internal successors, (10115), 7739 states have internal predecessors, (10115), 2905 states have call successors, (2905), 610 states have call predecessors, (2905), 603 states have return successors, (2893), 2848 states have call predecessors, (2893), 2890 states have call successors, (2893) [2021-12-18 02:21:38,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10978 states to 10978 states and 15913 transitions. [2021-12-18 02:21:38,088 INFO L78 Accepts]: Start accepts. Automaton has 10978 states and 15913 transitions. Word has length 38 [2021-12-18 02:21:38,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:21:38,088 INFO L470 AbstractCegarLoop]: Abstraction has 10978 states and 15913 transitions. [2021-12-18 02:21:38,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 10 states have internal predecessors, (29), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-18 02:21:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand 10978 states and 15913 transitions. [2021-12-18 02:21:38,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-18 02:21:38,090 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:21:38,090 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-18 02:21:38,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 02:21:38,090 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:21:38,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:21:38,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1064452566, now seen corresponding path program 1 times [2021-12-18 02:21:38,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:21:38,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144646554] [2021-12-18 02:21:38,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:21:38,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:21:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:21:38,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:21:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:21:38,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 02:21:38,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:21:38,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 02:21:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:21:38,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 02:21:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:21:38,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 02:21:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:21:39,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-18 02:21:39,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:21:39,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144646554] [2021-12-18 02:21:39,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144646554] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:21:39,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:21:39,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-18 02:21:39,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245263191] [2021-12-18 02:21:39,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:21:39,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-18 02:21:39,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:21:39,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-18 02:21:39,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2021-12-18 02:21:39,033 INFO L87 Difference]: Start difference. First operand 10978 states and 15913 transitions. Second operand has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 12 states have internal predecessors, (34), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-18 02:21:41,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:22:03,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:22:03,047 INFO L93 Difference]: Finished difference Result 17437 states and 25948 transitions. [2021-12-18 02:22:03,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-18 02:22:03,048 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 12 states have internal predecessors, (34), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 45 [2021-12-18 02:22:03,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:22:03,140 INFO L225 Difference]: With dead ends: 17437 [2021-12-18 02:22:03,140 INFO L226 Difference]: Without dead ends: 16373 [2021-12-18 02:22:03,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=161, Invalid=1171, Unknown=0, NotChecked=0, Total=1332 [2021-12-18 02:22:03,161 INFO L933 BasicCegarLoop]: 2295 mSDtfsCounter, 3981 mSDsluCounter, 23536 mSDsCounter, 0 mSdLazyCounter, 9539 mSolverCounterSat, 1829 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4267 SdHoareTripleChecker+Valid, 25831 SdHoareTripleChecker+Invalid, 11369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1829 IncrementalHoareTripleChecker+Valid, 9539 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2021-12-18 02:22:03,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4267 Valid, 25831 Invalid, 11369 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1829 Valid, 9539 Invalid, 1 Unknown, 0 Unchecked, 22.4s Time] [2021-12-18 02:22:03,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16373 states. [2021-12-18 02:22:03,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16373 to 9922. [2021-12-18 02:22:03,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9922 states, 6754 states have (on average 1.3532721350310928) internal successors, (9140), 6998 states have internal predecessors, (9140), 2620 states have call successors, (2620), 554 states have call predecessors, (2620), 547 states have return successors, (2608), 2567 states have call predecessors, (2608), 2605 states have call successors, (2608) [2021-12-18 02:22:03,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9922 states to 9922 states and 14368 transitions. [2021-12-18 02:22:03,906 INFO L78 Accepts]: Start accepts. Automaton has 9922 states and 14368 transitions. Word has length 45 [2021-12-18 02:22:03,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:22:03,910 INFO L470 AbstractCegarLoop]: Abstraction has 9922 states and 14368 transitions. [2021-12-18 02:22:03,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 12 states have internal predecessors, (34), 5 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-12-18 02:22:03,912 INFO L276 IsEmpty]: Start isEmpty. Operand 9922 states and 14368 transitions. [2021-12-18 02:22:03,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-18 02:22:03,918 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:22:03,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 02:22:03,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 02:22:03,919 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:22:03,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:22:03,919 INFO L85 PathProgramCache]: Analyzing trace with hash 575821089, now seen corresponding path program 1 times [2021-12-18 02:22:03,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:22:03,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102498458] [2021-12-18 02:22:03,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:22:03,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:22:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:04,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:22:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:04,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 02:22:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:04,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 02:22:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:04,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 02:22:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:04,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 02:22:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:04,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 02:22:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:04,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 02:22:04,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:22:04,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102498458] [2021-12-18 02:22:04,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102498458] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:22:04,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:22:04,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 02:22:04,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746814508] [2021-12-18 02:22:04,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:22:04,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 02:22:04,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:22:04,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 02:22:04,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 02:22:04,204 INFO L87 Difference]: Start difference. First operand 9922 states and 14368 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 02:22:06,256 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:22:08,259 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:22:12,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:22:12,496 INFO L93 Difference]: Finished difference Result 14804 states and 22011 transitions. [2021-12-18 02:22:12,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 02:22:12,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 52 [2021-12-18 02:22:12,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:22:12,600 INFO L225 Difference]: With dead ends: 14804 [2021-12-18 02:22:12,601 INFO L226 Difference]: Without dead ends: 14783 [2021-12-18 02:22:12,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 02:22:12,619 INFO L933 BasicCegarLoop]: 3339 mSDtfsCounter, 2019 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 1145 mSolverCounterSat, 669 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2304 SdHoareTripleChecker+Valid, 5977 SdHoareTripleChecker+Invalid, 1816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 1145 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-12-18 02:22:12,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2304 Valid, 5977 Invalid, 1816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 1145 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2021-12-18 02:22:12,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14783 states. [2021-12-18 02:22:13,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14783 to 7766. [2021-12-18 02:22:13,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7766 states, 5290 states have (on average 1.3506616257088846) internal successors, (7145), 5482 states have internal predecessors, (7145), 2046 states have call successors, (2046), 436 states have call predecessors, (2046), 429 states have return successors, (2036), 2001 states have call predecessors, (2036), 2033 states have call successors, (2036) [2021-12-18 02:22:13,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7766 states to 7766 states and 11227 transitions. [2021-12-18 02:22:13,092 INFO L78 Accepts]: Start accepts. Automaton has 7766 states and 11227 transitions. Word has length 52 [2021-12-18 02:22:13,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:22:13,093 INFO L470 AbstractCegarLoop]: Abstraction has 7766 states and 11227 transitions. [2021-12-18 02:22:13,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 02:22:13,093 INFO L276 IsEmpty]: Start isEmpty. Operand 7766 states and 11227 transitions. [2021-12-18 02:22:13,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-18 02:22:13,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:22:13,094 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-18 02:22:13,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 02:22:13,094 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:22:13,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:22:13,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1749749551, now seen corresponding path program 1 times [2021-12-18 02:22:13,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:22:13,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33950320] [2021-12-18 02:22:13,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:22:13,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:22:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:13,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:22:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:13,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 02:22:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:13,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 02:22:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:13,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-18 02:22:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:13,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 02:22:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:13,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-18 02:22:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:13,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 02:22:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:13,709 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-18 02:22:13,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:22:13,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33950320] [2021-12-18 02:22:13,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33950320] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 02:22:13,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245879871] [2021-12-18 02:22:13,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:22:13,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 02:22:13,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 02:22:13,711 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 02:22:13,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 02:22:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:18,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 2111 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-18 02:22:18,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 02:22:19,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 02:22:19,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 02:22:19,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245879871] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:22:19,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 02:22:19,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 14 [2021-12-18 02:22:19,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190169100] [2021-12-18 02:22:19,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:22:19,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 02:22:19,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:22:19,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 02:22:19,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-12-18 02:22:19,418 INFO L87 Difference]: Start difference. First operand 7766 states and 11227 transitions. Second operand has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-18 02:22:20,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:22:20,096 INFO L93 Difference]: Finished difference Result 9905 states and 14340 transitions. [2021-12-18 02:22:20,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 02:22:20,097 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 53 [2021-12-18 02:22:20,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:22:20,114 INFO L225 Difference]: With dead ends: 9905 [2021-12-18 02:22:20,114 INFO L226 Difference]: Without dead ends: 5552 [2021-12-18 02:22:20,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 61 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-12-18 02:22:20,127 INFO L933 BasicCegarLoop]: 1637 mSDtfsCounter, 263 mSDsluCounter, 7801 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 9438 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 02:22:20,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 9438 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 02:22:20,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5552 states. [2021-12-18 02:22:20,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5552 to 5544. [2021-12-18 02:22:20,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5544 states, 3773 states have (on average 1.3501192684866155) internal successors, (5094), 3908 states have internal predecessors, (5094), 1462 states have call successors, (1462), 313 states have call predecessors, (1462), 308 states have return successors, (1458), 1432 states have call predecessors, (1458), 1455 states have call successors, (1458) [2021-12-18 02:22:20,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5544 states to 5544 states and 8014 transitions. [2021-12-18 02:22:20,363 INFO L78 Accepts]: Start accepts. Automaton has 5544 states and 8014 transitions. Word has length 53 [2021-12-18 02:22:20,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:22:20,363 INFO L470 AbstractCegarLoop]: Abstraction has 5544 states and 8014 transitions. [2021-12-18 02:22:20,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-18 02:22:20,364 INFO L276 IsEmpty]: Start isEmpty. Operand 5544 states and 8014 transitions. [2021-12-18 02:22:20,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-18 02:22:20,365 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:22:20,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 02:22:20,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 02:22:20,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 02:22:20,591 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:22:20,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:22:20,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1357667059, now seen corresponding path program 1 times [2021-12-18 02:22:20,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:22:20,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189799699] [2021-12-18 02:22:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:22:20,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:22:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:20,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:22:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:20,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 02:22:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:20,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 02:22:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:20,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 02:22:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:20,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 02:22:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:20,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 02:22:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:20,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 02:22:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:20,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 02:22:20,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:22:20,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189799699] [2021-12-18 02:22:20,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189799699] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:22:20,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:22:20,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 02:22:20,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778469898] [2021-12-18 02:22:20,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:22:20,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 02:22:20,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:22:20,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 02:22:20,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-18 02:22:20,930 INFO L87 Difference]: Start difference. First operand 5544 states and 8014 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 02:22:22,978 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:22:25,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:22:42,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:22:42,457 INFO L93 Difference]: Finished difference Result 8917 states and 13364 transitions. [2021-12-18 02:22:42,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 02:22:42,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2021-12-18 02:22:42,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:22:42,503 INFO L225 Difference]: With dead ends: 8917 [2021-12-18 02:22:42,503 INFO L226 Difference]: Without dead ends: 7833 [2021-12-18 02:22:42,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-12-18 02:22:42,516 INFO L933 BasicCegarLoop]: 2294 mSDtfsCounter, 3107 mSDsluCounter, 5716 mSDsCounter, 0 mSdLazyCounter, 5880 mSolverCounterSat, 1734 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3344 SdHoareTripleChecker+Valid, 8010 SdHoareTripleChecker+Invalid, 7616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1734 IncrementalHoareTripleChecker+Valid, 5880 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2021-12-18 02:22:42,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3344 Valid, 8010 Invalid, 7616 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1734 Valid, 5880 Invalid, 2 Unknown, 0 Unchecked, 20.7s Time] [2021-12-18 02:22:42,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7833 states. [2021-12-18 02:22:42,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7833 to 5533. [2021-12-18 02:22:42,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5533 states, 3767 states have (on average 1.349880541544996) internal successors, (5085), 3900 states have internal predecessors, (5085), 1457 states have call successors, (1457), 313 states have call predecessors, (1457), 308 states have return successors, (1454), 1429 states have call predecessors, (1454), 1451 states have call successors, (1454) [2021-12-18 02:22:42,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5533 states to 5533 states and 7996 transitions. [2021-12-18 02:22:42,910 INFO L78 Accepts]: Start accepts. Automaton has 5533 states and 7996 transitions. Word has length 64 [2021-12-18 02:22:42,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:22:42,910 INFO L470 AbstractCegarLoop]: Abstraction has 5533 states and 7996 transitions. [2021-12-18 02:22:42,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 02:22:42,911 INFO L276 IsEmpty]: Start isEmpty. Operand 5533 states and 7996 transitions. [2021-12-18 02:22:42,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-18 02:22:42,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:22:42,912 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-18 02:22:42,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 02:22:42,913 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:22:42,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:22:42,914 INFO L85 PathProgramCache]: Analyzing trace with hash -723478224, now seen corresponding path program 1 times [2021-12-18 02:22:42,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:22:42,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028301541] [2021-12-18 02:22:42,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:22:42,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:22:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:43,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:22:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:43,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 02:22:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:43,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 02:22:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:43,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 02:22:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:43,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 02:22:43,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:43,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 02:22:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:43,318 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 02:22:43,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:22:43,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028301541] [2021-12-18 02:22:43,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028301541] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 02:22:43,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003940158] [2021-12-18 02:22:43,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:22:43,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 02:22:43,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 02:22:43,319 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 02:22:43,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 02:22:44,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:44,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 2147 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-18 02:22:44,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 02:22:44,395 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 02:22:44,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 02:22:44,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003940158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:22:44,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 02:22:44,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 13 [2021-12-18 02:22:44,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879343329] [2021-12-18 02:22:44,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:22:44,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 02:22:44,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:22:44,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 02:22:44,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-18 02:22:44,397 INFO L87 Difference]: Start difference. First operand 5533 states and 7996 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 02:22:45,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:22:45,301 INFO L93 Difference]: Finished difference Result 7432 states and 10871 transitions. [2021-12-18 02:22:45,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 02:22:45,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 63 [2021-12-18 02:22:45,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:22:45,317 INFO L225 Difference]: With dead ends: 7432 [2021-12-18 02:22:45,317 INFO L226 Difference]: Without dead ends: 4168 [2021-12-18 02:22:45,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-12-18 02:22:45,338 INFO L933 BasicCegarLoop]: 1986 mSDtfsCounter, 981 mSDsluCounter, 7197 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 9183 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 02:22:45,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1094 Valid, 9183 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 02:22:45,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4168 states. [2021-12-18 02:22:45,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4168 to 3391. [2021-12-18 02:22:45,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3391 states, 2314 states have (on average 1.3414001728608471) internal successors, (3104), 2393 states have internal predecessors, (3104), 881 states have call successors, (881), 198 states have call predecessors, (881), 195 states have return successors, (879), 865 states have call predecessors, (879), 876 states have call successors, (879) [2021-12-18 02:22:45,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3391 states to 3391 states and 4864 transitions. [2021-12-18 02:22:45,601 INFO L78 Accepts]: Start accepts. Automaton has 3391 states and 4864 transitions. Word has length 63 [2021-12-18 02:22:45,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:22:45,601 INFO L470 AbstractCegarLoop]: Abstraction has 3391 states and 4864 transitions. [2021-12-18 02:22:45,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-18 02:22:45,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3391 states and 4864 transitions. [2021-12-18 02:22:45,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-18 02:22:45,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:22:45,602 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-18 02:22:45,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 02:22:45,830 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,SelfDestructingSolverStorable8 [2021-12-18 02:22:45,830 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:22:45,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:22:45,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1127472847, now seen corresponding path program 1 times [2021-12-18 02:22:45,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:22:45,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409782624] [2021-12-18 02:22:45,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:22:45,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:22:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:46,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:22:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:46,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 02:22:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:46,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 02:22:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:46,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 02:22:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:46,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 02:22:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:46,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 02:22:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:46,180 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 02:22:46,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:22:46,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409782624] [2021-12-18 02:22:46,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409782624] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:22:46,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:22:46,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 02:22:46,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834317354] [2021-12-18 02:22:46,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:22:46,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 02:22:46,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:22:46,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 02:22:46,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-18 02:22:46,182 INFO L87 Difference]: Start difference. First operand 3391 states and 4864 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-18 02:22:48,209 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:22:56,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:22:56,411 INFO L93 Difference]: Finished difference Result 6245 states and 9373 transitions. [2021-12-18 02:22:56,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 02:22:56,412 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 66 [2021-12-18 02:22:56,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:22:56,456 INFO L225 Difference]: With dead ends: 6245 [2021-12-18 02:22:56,457 INFO L226 Difference]: Without dead ends: 5182 [2021-12-18 02:22:56,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-12-18 02:22:56,467 INFO L933 BasicCegarLoop]: 2332 mSDtfsCounter, 1878 mSDsluCounter, 14774 mSDsCounter, 0 mSdLazyCounter, 3473 mSolverCounterSat, 949 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2071 SdHoareTripleChecker+Valid, 17106 SdHoareTripleChecker+Invalid, 4423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 949 IncrementalHoareTripleChecker+Valid, 3473 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-12-18 02:22:56,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2071 Valid, 17106 Invalid, 4423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [949 Valid, 3473 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2021-12-18 02:22:56,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5182 states. [2021-12-18 02:22:56,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5182 to 3388. [2021-12-18 02:22:56,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 2311 states have (on average 1.3405452185201212) internal successors, (3098), 2390 states have internal predecessors, (3098), 881 states have call successors, (881), 198 states have call predecessors, (881), 195 states have return successors, (879), 865 states have call predecessors, (879), 876 states have call successors, (879) [2021-12-18 02:22:56,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 4858 transitions. [2021-12-18 02:22:56,802 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 4858 transitions. Word has length 66 [2021-12-18 02:22:56,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:22:56,803 INFO L470 AbstractCegarLoop]: Abstraction has 3388 states and 4858 transitions. [2021-12-18 02:22:56,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 9 states have internal predecessors, (52), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-18 02:22:56,803 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 4858 transitions. [2021-12-18 02:22:56,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-18 02:22:56,805 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:22:56,805 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-18 02:22:56,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 02:22:56,806 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:22:56,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:22:56,806 INFO L85 PathProgramCache]: Analyzing trace with hash -964928150, now seen corresponding path program 1 times [2021-12-18 02:22:56,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:22:56,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278553496] [2021-12-18 02:22:56,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:22:56,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:22:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:57,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:22:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:57,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 02:22:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:57,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 02:22:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:57,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 02:22:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:57,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 02:22:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:57,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 02:22:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:57,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-18 02:22:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:22:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-18 02:22:57,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:22:57,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278553496] [2021-12-18 02:22:57,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278553496] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:22:57,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:22:57,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 02:22:57,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626894236] [2021-12-18 02:22:57,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:22:57,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 02:22:57,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:22:57,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 02:22:57,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-18 02:22:57,126 INFO L87 Difference]: Start difference. First operand 3388 states and 4858 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 02:22:59,168 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:23:03,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:23:03,924 INFO L93 Difference]: Finished difference Result 6286 states and 9212 transitions. [2021-12-18 02:23:03,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 02:23:03,925 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2021-12-18 02:23:03,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:23:03,963 INFO L225 Difference]: With dead ends: 6286 [2021-12-18 02:23:03,963 INFO L226 Difference]: Without dead ends: 4124 [2021-12-18 02:23:03,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-18 02:23:03,984 INFO L933 BasicCegarLoop]: 2197 mSDtfsCounter, 1514 mSDsluCounter, 7267 mSDsCounter, 0 mSdLazyCounter, 2056 mSolverCounterSat, 806 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 9464 SdHoareTripleChecker+Invalid, 2863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2056 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-12-18 02:23:03,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1592 Valid, 9464 Invalid, 2863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2056 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2021-12-18 02:23:03,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4124 states. [2021-12-18 02:23:04,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4124 to 3369. [2021-12-18 02:23:04,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3369 states, 2299 states have (on average 1.3405828621139626) internal successors, (3082), 2377 states have internal predecessors, (3082), 876 states have call successors, (876), 194 states have call predecessors, (876), 193 states have return successors, (875), 863 states have call predecessors, (875), 872 states have call successors, (875) [2021-12-18 02:23:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3369 states to 3369 states and 4833 transitions. [2021-12-18 02:23:04,157 INFO L78 Accepts]: Start accepts. Automaton has 3369 states and 4833 transitions. Word has length 69 [2021-12-18 02:23:04,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:23:04,158 INFO L470 AbstractCegarLoop]: Abstraction has 3369 states and 4833 transitions. [2021-12-18 02:23:04,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-18 02:23:04,158 INFO L276 IsEmpty]: Start isEmpty. Operand 3369 states and 4833 transitions. [2021-12-18 02:23:04,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-18 02:23:04,160 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:23:04,160 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-18 02:23:04,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-18 02:23:04,160 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:23:04,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:23:04,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2888052, now seen corresponding path program 1 times [2021-12-18 02:23:04,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:23:04,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26767330] [2021-12-18 02:23:04,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:23:04,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:23:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:04,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:23:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:04,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 02:23:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:04,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 02:23:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:04,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 02:23:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:04,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 02:23:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:04,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 02:23:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-18 02:23:04,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:23:04,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26767330] [2021-12-18 02:23:04,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26767330] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:23:04,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:23:04,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 02:23:04,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874894612] [2021-12-18 02:23:04,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:23:04,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 02:23:04,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:23:04,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 02:23:04,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 02:23:04,432 INFO L87 Difference]: Start difference. First operand 3369 states and 4833 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-18 02:23:06,459 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:23:11,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:23:11,875 INFO L93 Difference]: Finished difference Result 4120 states and 6071 transitions. [2021-12-18 02:23:11,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 02:23:11,876 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 68 [2021-12-18 02:23:11,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:23:11,889 INFO L225 Difference]: With dead ends: 4120 [2021-12-18 02:23:11,889 INFO L226 Difference]: Without dead ends: 4115 [2021-12-18 02:23:11,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-18 02:23:11,891 INFO L933 BasicCegarLoop]: 2020 mSDtfsCounter, 1276 mSDsluCounter, 4797 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 695 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 6817 SdHoareTripleChecker+Invalid, 2361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 695 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-12-18 02:23:11,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1466 Valid, 6817 Invalid, 2361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [695 Valid, 1665 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2021-12-18 02:23:11,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states. [2021-12-18 02:23:12,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 3366. [2021-12-18 02:23:12,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3366 states, 2297 states have (on average 1.3404440574662604) internal successors, (3079), 2374 states have internal predecessors, (3079), 875 states have call successors, (875), 194 states have call predecessors, (875), 193 states have return successors, (875), 863 states have call predecessors, (875), 872 states have call successors, (875) [2021-12-18 02:23:12,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3366 states to 3366 states and 4829 transitions. [2021-12-18 02:23:12,049 INFO L78 Accepts]: Start accepts. Automaton has 3366 states and 4829 transitions. Word has length 68 [2021-12-18 02:23:12,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:23:12,050 INFO L470 AbstractCegarLoop]: Abstraction has 3366 states and 4829 transitions. [2021-12-18 02:23:12,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-18 02:23:12,050 INFO L276 IsEmpty]: Start isEmpty. Operand 3366 states and 4829 transitions. [2021-12-18 02:23:12,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-18 02:23:12,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:23:12,051 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-18 02:23:12,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 02:23:12,051 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:23:12,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:23:12,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1229122377, now seen corresponding path program 1 times [2021-12-18 02:23:12,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:23:12,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298205125] [2021-12-18 02:23:12,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:23:12,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:23:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:12,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:23:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:12,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 02:23:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:12,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 02:23:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:12,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 02:23:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:12,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 02:23:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:12,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 02:23:12,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:12,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 02:23:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:12,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 02:23:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:12,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 02:23:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:12,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-18 02:23:12,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:23:12,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298205125] [2021-12-18 02:23:12,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298205125] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:23:12,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:23:12,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 02:23:12,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096550785] [2021-12-18 02:23:12,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:23:12,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 02:23:12,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:23:12,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 02:23:12,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-18 02:23:12,371 INFO L87 Difference]: Start difference. First operand 3366 states and 4829 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-18 02:23:14,421 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:23:16,463 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:23:25,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:23:25,146 INFO L93 Difference]: Finished difference Result 3634 states and 5257 transitions. [2021-12-18 02:23:25,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 02:23:25,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 71 [2021-12-18 02:23:25,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:23:25,153 INFO L225 Difference]: With dead ends: 3634 [2021-12-18 02:23:25,153 INFO L226 Difference]: Without dead ends: 1480 [2021-12-18 02:23:25,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-18 02:23:25,160 INFO L933 BasicCegarLoop]: 1472 mSDtfsCounter, 1685 mSDsluCounter, 2498 mSDsCounter, 0 mSdLazyCounter, 4156 mSolverCounterSat, 886 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 3970 SdHoareTripleChecker+Invalid, 5044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 886 IncrementalHoareTripleChecker+Valid, 4156 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-12-18 02:23:25,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1811 Valid, 3970 Invalid, 5044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [886 Valid, 4156 Invalid, 2 Unknown, 0 Unchecked, 12.5s Time] [2021-12-18 02:23:25,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-12-18 02:23:25,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1161. [2021-12-18 02:23:25,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1161 states, 794 states have (on average 1.3299748110831233) internal successors, (1056), 821 states have internal predecessors, (1056), 298 states have call successors, (298), 70 states have call predecessors, (298), 68 states have return successors, (294), 291 states have call predecessors, (294), 294 states have call successors, (294) [2021-12-18 02:23:25,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1648 transitions. [2021-12-18 02:23:25,258 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1648 transitions. Word has length 71 [2021-12-18 02:23:25,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:23:25,258 INFO L470 AbstractCegarLoop]: Abstraction has 1161 states and 1648 transitions. [2021-12-18 02:23:25,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-18 02:23:25,258 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1648 transitions. [2021-12-18 02:23:25,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-18 02:23:25,259 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:23:25,260 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-18 02:23:25,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-18 02:23:25,260 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:23:25,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:23:25,272 INFO L85 PathProgramCache]: Analyzing trace with hash -78799712, now seen corresponding path program 1 times [2021-12-18 02:23:25,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:23:25,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317554056] [2021-12-18 02:23:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:23:25,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:23:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:25,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:23:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:25,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 02:23:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:25,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 02:23:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:25,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 02:23:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:25,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 02:23:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:25,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 02:23:25,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:25,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 02:23:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:25,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 02:23:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:25,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 02:23:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:25,513 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-18 02:23:25,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:23:25,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317554056] [2021-12-18 02:23:25,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317554056] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:23:25,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:23:25,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 02:23:25,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052755650] [2021-12-18 02:23:25,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:23:25,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 02:23:25,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:23:25,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 02:23:25,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 02:23:25,518 INFO L87 Difference]: Start difference. First operand 1161 states and 1648 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-18 02:23:27,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:23:29,635 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:23:31,648 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:23:36,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:23:36,018 INFO L93 Difference]: Finished difference Result 1415 states and 2064 transitions. [2021-12-18 02:23:36,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 02:23:36,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2021-12-18 02:23:36,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:23:36,024 INFO L225 Difference]: With dead ends: 1415 [2021-12-18 02:23:36,024 INFO L226 Difference]: Without dead ends: 1380 [2021-12-18 02:23:36,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-18 02:23:36,025 INFO L933 BasicCegarLoop]: 1478 mSDtfsCounter, 3060 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 1099 mSolverCounterSat, 1455 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3175 SdHoareTripleChecker+Valid, 1991 SdHoareTripleChecker+Invalid, 2557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1455 IncrementalHoareTripleChecker+Valid, 1099 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-12-18 02:23:36,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3175 Valid, 1991 Invalid, 2557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1455 Valid, 1099 Invalid, 3 Unknown, 0 Unchecked, 10.3s Time] [2021-12-18 02:23:36,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2021-12-18 02:23:36,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1128. [2021-12-18 02:23:36,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1128 states, 772 states have (on average 1.3354922279792747) internal successors, (1031), 797 states have internal predecessors, (1031), 291 states have call successors, (291), 65 states have call predecessors, (291), 64 states have return successors, (290), 287 states have call predecessors, (290), 290 states have call successors, (290) [2021-12-18 02:23:36,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1128 states to 1128 states and 1612 transitions. [2021-12-18 02:23:36,123 INFO L78 Accepts]: Start accepts. Automaton has 1128 states and 1612 transitions. Word has length 79 [2021-12-18 02:23:36,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:23:36,124 INFO L470 AbstractCegarLoop]: Abstraction has 1128 states and 1612 transitions. [2021-12-18 02:23:36,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-18 02:23:36,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1128 states and 1612 transitions. [2021-12-18 02:23:36,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-18 02:23:36,126 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 02:23:36,126 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-18 02:23:36,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-18 02:23:36,127 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 02:23:36,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 02:23:36,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1039755587, now seen corresponding path program 1 times [2021-12-18 02:23:36,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 02:23:36,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221164515] [2021-12-18 02:23:36,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 02:23:36,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 02:23:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:36,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 02:23:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:36,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 02:23:36,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:36,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 02:23:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:36,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 02:23:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:36,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-18 02:23:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:36,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 02:23:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:36,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-18 02:23:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:36,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 02:23:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 02:23:36,305 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-18 02:23:36,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 02:23:36,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221164515] [2021-12-18 02:23:36,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221164515] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 02:23:36,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 02:23:36,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 02:23:36,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420148015] [2021-12-18 02:23:36,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 02:23:36,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 02:23:36,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 02:23:36,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 02:23:36,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 02:23:36,307 INFO L87 Difference]: Start difference. First operand 1128 states and 1612 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 02:23:38,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:23:40,379 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 02:23:42,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 02:23:42,392 INFO L93 Difference]: Finished difference Result 1380 states and 2027 transitions. [2021-12-18 02:23:42,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 02:23:42,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 79 [2021-12-18 02:23:42,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 02:23:42,403 INFO L225 Difference]: With dead ends: 1380 [2021-12-18 02:23:42,403 INFO L226 Difference]: Without dead ends: 0 [2021-12-18 02:23:42,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 02:23:42,408 INFO L933 BasicCegarLoop]: 1611 mSDtfsCounter, 2085 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 575 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 575 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-12-18 02:23:42,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2288 Valid, 2337 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [575 Valid, 401 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2021-12-18 02:23:42,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-18 02:23:42,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-18 02:23:42,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 02:23:42,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-18 02:23:42,409 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 79 [2021-12-18 02:23:42,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 02:23:42,410 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-18 02:23:42,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 02:23:42,410 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-18 02:23:42,410 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-18 02:23:42,414 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-18 02:23:42,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-18 02:23:42,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-18 02:23:52,640 WARN L227 SmtUtils]: Spent 10.00s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:24:01,405 WARN L227 SmtUtils]: Spent 8.76s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:24:10,741 WARN L227 SmtUtils]: Spent 9.26s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:24:19,496 WARN L227 SmtUtils]: Spent 8.75s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:24:29,736 WARN L227 SmtUtils]: Spent 10.20s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:24:38,249 WARN L227 SmtUtils]: Spent 8.51s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:24:47,084 WARN L227 SmtUtils]: Spent 8.81s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:24:56,020 WARN L227 SmtUtils]: Spent 8.93s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:25:04,752 WARN L227 SmtUtils]: Spent 8.71s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:25:13,522 WARN L227 SmtUtils]: Spent 8.77s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:25:22,051 WARN L227 SmtUtils]: Spent 8.52s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:25:31,455 WARN L227 SmtUtils]: Spent 9.38s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:25:40,887 WARN L227 SmtUtils]: Spent 9.43s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:25:49,922 WARN L227 SmtUtils]: Spent 9.01s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:25:59,580 WARN L227 SmtUtils]: Spent 9.66s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:26:08,322 WARN L227 SmtUtils]: Spent 8.74s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:26:18,009 WARN L227 SmtUtils]: Spent 9.68s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:26:27,263 WARN L227 SmtUtils]: Spent 9.20s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:26:36,146 WARN L227 SmtUtils]: Spent 8.88s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:26:45,814 WARN L227 SmtUtils]: Spent 9.62s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:26:55,355 WARN L227 SmtUtils]: Spent 9.54s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:27:04,848 WARN L227 SmtUtils]: Spent 9.49s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:27:13,275 WARN L227 SmtUtils]: Spent 8.42s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:27:21,910 WARN L227 SmtUtils]: Spent 8.59s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:27:30,391 WARN L227 SmtUtils]: Spent 8.48s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:27:39,267 WARN L227 SmtUtils]: Spent 8.85s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:27:47,747 WARN L227 SmtUtils]: Spent 8.48s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:27:57,324 WARN L227 SmtUtils]: Spent 9.52s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:28:06,926 WARN L227 SmtUtils]: Spent 9.60s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:28:16,105 WARN L227 SmtUtils]: Spent 9.17s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:28:24,548 WARN L227 SmtUtils]: Spent 8.44s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:28:33,587 WARN L227 SmtUtils]: Spent 9.01s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:28:42,401 WARN L227 SmtUtils]: Spent 8.81s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:28:51,486 WARN L227 SmtUtils]: Spent 9.06s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:28:59,937 WARN L227 SmtUtils]: Spent 8.45s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:29:09,763 WARN L227 SmtUtils]: Spent 9.81s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:29:18,728 WARN L227 SmtUtils]: Spent 8.96s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:29:28,426 WARN L227 SmtUtils]: Spent 9.68s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:29:36,954 WARN L227 SmtUtils]: Spent 8.53s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:29:45,774 WARN L227 SmtUtils]: Spent 8.78s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:29:54,284 WARN L227 SmtUtils]: Spent 8.50s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:30:03,082 WARN L227 SmtUtils]: Spent 8.77s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:30:12,564 WARN L227 SmtUtils]: Spent 9.48s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:30:22,673 WARN L227 SmtUtils]: Spent 10.10s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:30:31,526 WARN L227 SmtUtils]: Spent 8.85s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:30:40,048 WARN L227 SmtUtils]: Spent 8.48s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:30:48,496 WARN L227 SmtUtils]: Spent 8.45s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:30:56,980 WARN L227 SmtUtils]: Spent 8.48s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:31:05,455 WARN L227 SmtUtils]: Spent 8.47s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:31:13,925 WARN L227 SmtUtils]: Spent 8.47s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:31:22,373 WARN L227 SmtUtils]: Spent 8.44s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:31:31,912 WARN L227 SmtUtils]: Spent 9.51s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:31:40,451 WARN L227 SmtUtils]: Spent 8.54s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:31:49,653 WARN L227 SmtUtils]: Spent 9.20s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:31:58,364 WARN L227 SmtUtils]: Spent 8.47s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:32:06,839 WARN L227 SmtUtils]: Spent 8.47s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:32:15,437 WARN L227 SmtUtils]: Spent 8.48s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:32:25,015 WARN L227 SmtUtils]: Spent 9.58s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:32:35,285 WARN L227 SmtUtils]: Spent 10.25s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:32:45,272 WARN L227 SmtUtils]: Spent 9.98s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:32:55,271 WARN L227 SmtUtils]: Spent 9.98s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:33:04,227 WARN L227 SmtUtils]: Spent 8.95s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:33:13,050 WARN L227 SmtUtils]: Spent 8.82s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:33:21,573 WARN L227 SmtUtils]: Spent 8.52s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:33:30,407 WARN L227 SmtUtils]: Spent 8.83s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:33:39,140 WARN L227 SmtUtils]: Spent 8.69s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:33:47,889 WARN L227 SmtUtils]: Spent 8.75s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:33:56,392 WARN L227 SmtUtils]: Spent 8.47s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:34:04,871 WARN L227 SmtUtils]: Spent 8.48s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:34:14,603 WARN L227 SmtUtils]: Spent 9.68s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:34:23,105 WARN L227 SmtUtils]: Spent 8.50s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:34:31,641 WARN L227 SmtUtils]: Spent 8.49s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:34:40,173 WARN L227 SmtUtils]: Spent 8.53s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:34:48,735 WARN L227 SmtUtils]: Spent 8.55s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-18 02:34:58,015 WARN L227 SmtUtils]: Spent 9.28s on a formula simplification. DAG size of input: 80 DAG size of output: 72 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) Killed by 15