./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 14:02:00,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 14:02:00,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 14:02:00,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 14:02:00,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 14:02:00,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 14:02:00,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 14:02:00,408 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 14:02:00,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 14:02:00,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 14:02:00,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 14:02:00,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 14:02:00,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 14:02:00,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 14:02:00,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 14:02:00,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 14:02:00,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 14:02:00,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 14:02:00,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 14:02:00,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 14:02:00,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 14:02:00,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 14:02:00,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 14:02:00,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 14:02:00,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 14:02:00,430 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 14:02:00,430 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 14:02:00,430 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 14:02:00,431 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 14:02:00,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 14:02:00,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 14:02:00,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 14:02:00,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 14:02:00,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 14:02:00,446 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 14:02:00,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 14:02:00,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 14:02:00,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 14:02:00,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 14:02:00,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 14:02:00,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 14:02:00,450 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 14:02:00,474 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 14:02:00,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 14:02:00,480 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 14:02:00,480 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 14:02:00,481 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 14:02:00,482 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 14:02:00,482 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 14:02:00,482 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 14:02:00,482 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 14:02:00,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 14:02:00,483 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 14:02:00,483 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 14:02:00,483 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 14:02:00,483 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 14:02:00,483 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 14:02:00,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 14:02:00,484 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 14:02:00,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 14:02:00,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 14:02:00,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 14:02:00,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 14:02:00,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 14:02:00,484 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 14:02:00,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 14:02:00,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 14:02:00,485 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 14:02:00,485 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 14:02:00,486 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 14:02:00,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 14:02:00,486 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a [2021-11-05 14:02:00,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 14:02:00,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 14:02:00,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 14:02:00,744 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 14:02:00,745 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 14:02:00,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-05 14:02:00,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6d24e64d/7e1312ab98ba48aea7aa06a081535ac7/FLAG6f77bd979 [2021-11-05 14:02:01,355 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 14:02:01,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-05 14:02:01,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6d24e64d/7e1312ab98ba48aea7aa06a081535ac7/FLAG6f77bd979 [2021-11-05 14:02:01,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b6d24e64d/7e1312ab98ba48aea7aa06a081535ac7 [2021-11-05 14:02:01,541 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 14:02:01,543 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 14:02:01,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 14:02:01,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 14:02:01,548 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 14:02:01,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:02:01" (1/1) ... [2021-11-05 14:02:01,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51d8529c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:02:01, skipping insertion in model container [2021-11-05 14:02:01,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:02:01" (1/1) ... [2021-11-05 14:02:01,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 14:02:01,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 14:02:02,362 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-05 14:02:02,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 14:02:02,408 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 14:02:02,584 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-05 14:02:02,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 14:02:02,699 INFO L208 MainTranslator]: Completed translation [2021-11-05 14:02:02,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:02:02 WrapperNode [2021-11-05 14:02:02,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 14:02:02,702 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 14:02:02,702 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 14:02:02,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 14:02:02,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:02:02" (1/1) ... [2021-11-05 14:02:02,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:02:02" (1/1) ... [2021-11-05 14:02:02,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 14:02:02,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 14:02:02,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 14:02:02,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 14:02:02,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:02:02" (1/1) ... [2021-11-05 14:02:02,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:02:02" (1/1) ... [2021-11-05 14:02:02,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:02:02" (1/1) ... [2021-11-05 14:02:02,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:02:02" (1/1) ... [2021-11-05 14:02:02,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:02:02" (1/1) ... [2021-11-05 14:02:02,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:02:02" (1/1) ... [2021-11-05 14:02:02,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:02:02" (1/1) ... [2021-11-05 14:02:02,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 14:02:02,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 14:02:02,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 14:02:02,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 14:02:02,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:02:02" (1/1) ... [2021-11-05 14:02:02,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 14:02:02,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 14:02:02,980 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) [2021-11-05 14:02:02,983 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 [2021-11-05 14:02:03,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 14:02:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 14:02:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 14:02:03,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 14:02:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 14:02:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 14:02:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 14:02:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 14:02:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 14:02:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 14:02:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 14:02:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 14:02:03,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 14:02:03,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 14:02:03,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 14:02:03,323 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-05 14:02:05,905 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume !false; [2021-11-05 14:02:05,905 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume false; [2021-11-05 14:02:05,917 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 14:02:05,917 INFO L299 CfgBuilder]: Removed 434 assume(true) statements. [2021-11-05 14:02:05,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:02:05 BoogieIcfgContainer [2021-11-05 14:02:05,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 14:02:05,920 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 14:02:05,920 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 14:02:05,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 14:02:05,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 02:02:01" (1/3) ... [2021-11-05 14:02:05,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33639272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:02:05, skipping insertion in model container [2021-11-05 14:02:05,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:02:02" (2/3) ... [2021-11-05 14:02:05,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33639272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:02:05, skipping insertion in model container [2021-11-05 14:02:05,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:02:05" (3/3) ... [2021-11-05 14:02:05,924 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-05 14:02:05,928 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 14:02:05,928 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-05 14:02:05,968 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 14:02:05,973 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 [2021-11-05 14:02:05,974 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-05 14:02:05,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 410 states, 398 states have (on average 1.5025125628140703) internal successors, (598), 409 states have internal predecessors, (598), 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) [2021-11-05 14:02:06,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-05 14:02:06,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:06,004 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:02:06,005 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:06,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:06,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1465825715, now seen corresponding path program 1 times [2021-11-05 14:02:06,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:06,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799032051] [2021-11-05 14:02:06,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:06,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:06,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:06,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:06,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799032051] [2021-11-05 14:02:06,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799032051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:06,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:06,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 14:02:06,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960178084] [2021-11-05 14:02:06,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:06,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 14:02:06,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:06,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 14:02:06,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 14:02:06,372 INFO L87 Difference]: Start difference. First operand has 410 states, 398 states have (on average 1.5025125628140703) internal successors, (598), 409 states have internal predecessors, (598), 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) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-05 14:02:06,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:06,500 INFO L93 Difference]: Finished difference Result 1189 states and 1749 transitions. [2021-11-05 14:02:06,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 14:02:06,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) Word has length 10 [2021-11-05 14:02:06,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:06,519 INFO L225 Difference]: With dead ends: 1189 [2021-11-05 14:02:06,520 INFO L226 Difference]: Without dead ends: 765 [2021-11-05 14:02:06,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.81ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 14:02:06,528 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 503 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.28ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.50ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:06,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 1007 Invalid, 39 Unknown, 0 Unchecked, 11.28ms Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 41.50ms Time] [2021-11-05 14:02:06,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2021-11-05 14:02:06,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 747. [2021-11-05 14:02:06,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 736 states have (on average 1.327445652173913) internal successors, (977), 746 states have internal predecessors, (977), 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) [2021-11-05 14:02:06,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 977 transitions. [2021-11-05 14:02:06,607 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 977 transitions. Word has length 10 [2021-11-05 14:02:06,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:06,608 INFO L470 AbstractCegarLoop]: Abstraction has 747 states and 977 transitions. [2021-11-05 14:02:06,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-05 14:02:06,608 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 977 transitions. [2021-11-05 14:02:06,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-05 14:02:06,608 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:06,609 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:02:06,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 14:02:06,609 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:06,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:06,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1804042980, now seen corresponding path program 1 times [2021-11-05 14:02:06,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:06,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029312903] [2021-11-05 14:02:06,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:06,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:06,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:06,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:06,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:06,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029312903] [2021-11-05 14:02:06,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029312903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:06,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:06,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 14:02:06,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090371234] [2021-11-05 14:02:06,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:06,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 14:02:06,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:06,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 14:02:06,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 14:02:06,685 INFO L87 Difference]: Start difference. First operand 747 states and 977 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-11-05 14:02:06,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:06,766 INFO L93 Difference]: Finished difference Result 2217 states and 2904 transitions. [2021-11-05 14:02:06,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 14:02:06,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) Word has length 11 [2021-11-05 14:02:06,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:06,771 INFO L225 Difference]: With dead ends: 2217 [2021-11-05 14:02:06,771 INFO L226 Difference]: Without dead ends: 1475 [2021-11-05 14:02:06,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.44ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 14:02:06,777 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 487 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.73ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.69ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:06,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 985 Invalid, 20 Unknown, 0 Unchecked, 2.73ms Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 17.69ms Time] [2021-11-05 14:02:06,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2021-11-05 14:02:06,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1446. [2021-11-05 14:02:06,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1435 states have (on average 1.3261324041811846) internal successors, (1903), 1445 states have internal predecessors, (1903), 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) [2021-11-05 14:02:06,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 1903 transitions. [2021-11-05 14:02:06,813 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 1903 transitions. Word has length 11 [2021-11-05 14:02:06,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:06,815 INFO L470 AbstractCegarLoop]: Abstraction has 1446 states and 1903 transitions. [2021-11-05 14:02:06,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-11-05 14:02:06,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 1903 transitions. [2021-11-05 14:02:06,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-05 14:02:06,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:06,822 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] [2021-11-05 14:02:06,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-05 14:02:06,822 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:06,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:06,823 INFO L85 PathProgramCache]: Analyzing trace with hash 739890622, now seen corresponding path program 1 times [2021-11-05 14:02:06,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:06,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376343388] [2021-11-05 14:02:06,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:06,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:06,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:06,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:06,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376343388] [2021-11-05 14:02:06,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376343388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:06,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:06,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 14:02:06,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697138745] [2021-11-05 14:02:06,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:06,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 14:02:06,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:06,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 14:02:06,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 14:02:06,910 INFO L87 Difference]: Start difference. First operand 1446 states and 1903 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-11-05 14:02:06,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:06,966 INFO L93 Difference]: Finished difference Result 3924 states and 5208 transitions. [2021-11-05 14:02:06,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 14:02:06,966 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) Word has length 38 [2021-11-05 14:02:06,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:06,973 INFO L225 Difference]: With dead ends: 3924 [2021-11-05 14:02:06,973 INFO L226 Difference]: Without dead ends: 2485 [2021-11-05 14:02:06,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.42ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 14:02:06,976 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 453 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.65ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.57ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:06,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 902 Invalid, 15 Unknown, 0 Unchecked, 1.65ms Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 12.57ms Time] [2021-11-05 14:02:06,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2021-11-05 14:02:07,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2453. [2021-11-05 14:02:07,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2453 states, 2442 states have (on average 1.341932841932842) internal successors, (3277), 2452 states have internal predecessors, (3277), 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) [2021-11-05 14:02:07,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 3277 transitions. [2021-11-05 14:02:07,024 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 3277 transitions. Word has length 38 [2021-11-05 14:02:07,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:07,024 INFO L470 AbstractCegarLoop]: Abstraction has 2453 states and 3277 transitions. [2021-11-05 14:02:07,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-11-05 14:02:07,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 3277 transitions. [2021-11-05 14:02:07,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-05 14:02:07,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:07,026 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] [2021-11-05 14:02:07,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-05 14:02:07,026 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:07,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:07,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1309389857, now seen corresponding path program 1 times [2021-11-05 14:02:07,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:07,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713835828] [2021-11-05 14:02:07,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:07,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:07,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:07,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:07,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713835828] [2021-11-05 14:02:07,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713835828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:07,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:07,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 14:02:07,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090132446] [2021-11-05 14:02:07,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:07,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:02:07,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:07,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:02:07,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:02:07,115 INFO L87 Difference]: Start difference. First operand 2453 states and 3277 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2021-11-05 14:02:07,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:07,225 INFO L93 Difference]: Finished difference Result 7327 states and 9781 transitions. [2021-11-05 14:02:07,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 14:02:07,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) Word has length 41 [2021-11-05 14:02:07,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:07,240 INFO L225 Difference]: With dead ends: 7327 [2021-11-05 14:02:07,241 INFO L226 Difference]: Without dead ends: 4882 [2021-11-05 14:02:07,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.75ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:02:07,251 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 979 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.91ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.95ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:07,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 1863 Invalid, 12 Unknown, 0 Unchecked, 2.91ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 8.95ms Time] [2021-11-05 14:02:07,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4882 states. [2021-11-05 14:02:07,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4882 to 2469. [2021-11-05 14:02:07,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2469 states, 2458 states have (on average 1.339707078925956) internal successors, (3293), 2468 states have internal predecessors, (3293), 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) [2021-11-05 14:02:07,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 3293 transitions. [2021-11-05 14:02:07,331 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 3293 transitions. Word has length 41 [2021-11-05 14:02:07,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:07,332 INFO L470 AbstractCegarLoop]: Abstraction has 2469 states and 3293 transitions. [2021-11-05 14:02:07,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2021-11-05 14:02:07,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 3293 transitions. [2021-11-05 14:02:07,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-05 14:02:07,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:07,333 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] [2021-11-05 14:02:07,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 14:02:07,334 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:07,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:07,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1996940455, now seen corresponding path program 1 times [2021-11-05 14:02:07,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:07,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211746646] [2021-11-05 14:02:07,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:07,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:07,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:07,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:07,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211746646] [2021-11-05 14:02:07,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211746646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:07,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:07,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 14:02:07,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563740256] [2021-11-05 14:02:07,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:07,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:02:07,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:07,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:02:07,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:02:07,397 INFO L87 Difference]: Start difference. First operand 2469 states and 3293 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2021-11-05 14:02:07,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:07,516 INFO L93 Difference]: Finished difference Result 6707 states and 8941 transitions. [2021-11-05 14:02:07,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 14:02:07,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) Word has length 42 [2021-11-05 14:02:07,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:07,528 INFO L225 Difference]: With dead ends: 6707 [2021-11-05 14:02:07,529 INFO L226 Difference]: Without dead ends: 4246 [2021-11-05 14:02:07,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.57ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:02:07,532 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 742 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.92ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:07,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 1876 Invalid, 11 Unknown, 0 Unchecked, 2.45ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 8.92ms Time] [2021-11-05 14:02:07,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4246 states. [2021-11-05 14:02:07,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4246 to 2485. [2021-11-05 14:02:07,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2485 states, 2474 states have (on average 1.3375101050929668) internal successors, (3309), 2484 states have internal predecessors, (3309), 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) [2021-11-05 14:02:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 3309 transitions. [2021-11-05 14:02:07,606 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 3309 transitions. Word has length 42 [2021-11-05 14:02:07,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:07,606 INFO L470 AbstractCegarLoop]: Abstraction has 2485 states and 3309 transitions. [2021-11-05 14:02:07,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2021-11-05 14:02:07,607 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 3309 transitions. [2021-11-05 14:02:07,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-05 14:02:07,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:07,608 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] [2021-11-05 14:02:07,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 14:02:07,608 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:07,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:07,608 INFO L85 PathProgramCache]: Analyzing trace with hash -942849768, now seen corresponding path program 1 times [2021-11-05 14:02:07,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:07,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687399930] [2021-11-05 14:02:07,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:07,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:07,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:07,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:07,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687399930] [2021-11-05 14:02:07,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687399930] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:07,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:07,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 14:02:07,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289837381] [2021-11-05 14:02:07,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:07,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 14:02:07,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:07,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 14:02:07,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:02:07,685 INFO L87 Difference]: Start difference. First operand 2485 states and 3309 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2021-11-05 14:02:08,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:08,232 INFO L93 Difference]: Finished difference Result 13586 states and 18045 transitions. [2021-11-05 14:02:08,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 14:02:08,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) Word has length 42 [2021-11-05 14:02:08,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:08,278 INFO L225 Difference]: With dead ends: 13586 [2021-11-05 14:02:08,279 INFO L226 Difference]: Without dead ends: 12316 [2021-11-05 14:02:08,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 32.88ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 14:02:08,286 INFO L933 BasicCegarLoop]: 1056 mSDtfsCounter, 3034 mSDsluCounter, 3157 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 119.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3034 SdHoareTripleChecker+Valid, 4213 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.01ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 138.33ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:08,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3034 Valid, 4213 Invalid, 144 Unknown, 0 Unchecked, 10.01ms Time], IncrementalHoareTripleChecker [25 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 138.33ms Time] [2021-11-05 14:02:08,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12316 states. [2021-11-05 14:02:08,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12316 to 2545. [2021-11-05 14:02:08,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2534 states have (on average 1.329518547750592) internal successors, (3369), 2544 states have internal predecessors, (3369), 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) [2021-11-05 14:02:08,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 3369 transitions. [2021-11-05 14:02:08,427 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 3369 transitions. Word has length 42 [2021-11-05 14:02:08,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:08,429 INFO L470 AbstractCegarLoop]: Abstraction has 2545 states and 3369 transitions. [2021-11-05 14:02:08,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2021-11-05 14:02:08,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 3369 transitions. [2021-11-05 14:02:08,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-05 14:02:08,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:08,430 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] [2021-11-05 14:02:08,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 14:02:08,430 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:08,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:08,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1763769626, now seen corresponding path program 1 times [2021-11-05 14:02:08,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:08,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541768436] [2021-11-05 14:02:08,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:08,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:08,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:08,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:08,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541768436] [2021-11-05 14:02:08,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541768436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:08,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:08,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 14:02:08,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187424516] [2021-11-05 14:02:08,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:08,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 14:02:08,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:08,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 14:02:08,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 14:02:08,526 INFO L87 Difference]: Start difference. First operand 2545 states and 3369 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-11-05 14:02:09,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:09,855 INFO L93 Difference]: Finished difference Result 19757 states and 26263 transitions. [2021-11-05 14:02:09,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-05 14:02:09,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) Word has length 42 [2021-11-05 14:02:09,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:09,888 INFO L225 Difference]: With dead ends: 19757 [2021-11-05 14:02:09,888 INFO L226 Difference]: Without dead ends: 17220 [2021-11-05 14:02:09,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 83.84ms TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-05 14:02:09,897 INFO L933 BasicCegarLoop]: 2470 mSDtfsCounter, 4259 mSDsluCounter, 8569 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 416.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4259 SdHoareTripleChecker+Valid, 11039 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.10ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 466.95ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:09,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4259 Valid, 11039 Invalid, 396 Unknown, 0 Unchecked, 16.10ms Time], IncrementalHoareTripleChecker [21 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 466.95ms Time] [2021-11-05 14:02:09,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17220 states. [2021-11-05 14:02:10,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17220 to 2523. [2021-11-05 14:02:10,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2523 states, 2512 states have (on average 1.3244426751592357) internal successors, (3327), 2522 states have internal predecessors, (3327), 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) [2021-11-05 14:02:10,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 3327 transitions. [2021-11-05 14:02:10,127 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 3327 transitions. Word has length 42 [2021-11-05 14:02:10,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:10,128 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 3327 transitions. [2021-11-05 14:02:10,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-11-05 14:02:10,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 3327 transitions. [2021-11-05 14:02:10,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-05 14:02:10,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:10,129 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] [2021-11-05 14:02:10,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 14:02:10,129 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:10,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:10,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1882537444, now seen corresponding path program 1 times [2021-11-05 14:02:10,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:10,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34786222] [2021-11-05 14:02:10,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:10,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:10,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:10,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:10,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34786222] [2021-11-05 14:02:10,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34786222] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:10,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:10,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 14:02:10,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642115294] [2021-11-05 14:02:10,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:10,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:02:10,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:10,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:02:10,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:02:10,189 INFO L87 Difference]: Start difference. First operand 2523 states and 3327 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-11-05 14:02:10,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:10,583 INFO L93 Difference]: Finished difference Result 8648 states and 11424 transitions. [2021-11-05 14:02:10,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 14:02:10,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) Word has length 44 [2021-11-05 14:02:10,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:10,592 INFO L225 Difference]: With dead ends: 8648 [2021-11-05 14:02:10,592 INFO L226 Difference]: Without dead ends: 6133 [2021-11-05 14:02:10,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.19ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:02:10,595 INFO L933 BasicCegarLoop]: 1026 mSDtfsCounter, 1250 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.40ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.18ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:10,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1250 Valid, 2686 Invalid, 39 Unknown, 0 Unchecked, 3.40ms Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 68.18ms Time] [2021-11-05 14:02:10,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6133 states. [2021-11-05 14:02:10,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6133 to 2261. [2021-11-05 14:02:10,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 2250 states have (on average 1.3177777777777777) internal successors, (2965), 2260 states have internal predecessors, (2965), 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) [2021-11-05 14:02:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 2965 transitions. [2021-11-05 14:02:10,726 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 2965 transitions. Word has length 44 [2021-11-05 14:02:10,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:10,726 INFO L470 AbstractCegarLoop]: Abstraction has 2261 states and 2965 transitions. [2021-11-05 14:02:10,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-11-05 14:02:10,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 2965 transitions. [2021-11-05 14:02:10,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-05 14:02:10,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:10,727 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] [2021-11-05 14:02:10,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 14:02:10,727 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:10,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:10,727 INFO L85 PathProgramCache]: Analyzing trace with hash -297582244, now seen corresponding path program 1 times [2021-11-05 14:02:10,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:10,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657753546] [2021-11-05 14:02:10,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:10,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:10,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:10,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657753546] [2021-11-05 14:02:10,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657753546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:10,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:10,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 14:02:10,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817744710] [2021-11-05 14:02:10,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:10,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:02:10,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:10,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:02:10,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:02:10,788 INFO L87 Difference]: Start difference. First operand 2261 states and 2965 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-05 14:02:11,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:11,154 INFO L93 Difference]: Finished difference Result 3590 states and 4695 transitions. [2021-11-05 14:02:11,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 14:02:11,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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) Word has length 44 [2021-11-05 14:02:11,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:11,160 INFO L225 Difference]: With dead ends: 3590 [2021-11-05 14:02:11,160 INFO L226 Difference]: Without dead ends: 3575 [2021-11-05 14:02:11,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.14ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:02:11,161 INFO L933 BasicCegarLoop]: 855 mSDtfsCounter, 820 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.76ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 141.75ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:11,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [820 Valid, 1811 Invalid, 86 Unknown, 0 Unchecked, 2.76ms Time], IncrementalHoareTripleChecker [18 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 141.75ms Time] [2021-11-05 14:02:11,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3575 states. [2021-11-05 14:02:11,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3575 to 3517. [2021-11-05 14:02:11,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3517 states, 3506 states have (on average 1.3168853394181403) internal successors, (4617), 3516 states have internal predecessors, (4617), 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) [2021-11-05 14:02:11,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3517 states to 3517 states and 4617 transitions. [2021-11-05 14:02:11,383 INFO L78 Accepts]: Start accepts. Automaton has 3517 states and 4617 transitions. Word has length 44 [2021-11-05 14:02:11,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:11,384 INFO L470 AbstractCegarLoop]: Abstraction has 3517 states and 4617 transitions. [2021-11-05 14:02:11,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 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) [2021-11-05 14:02:11,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3517 states and 4617 transitions. [2021-11-05 14:02:11,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-05 14:02:11,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:11,385 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] [2021-11-05 14:02:11,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-05 14:02:11,385 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:11,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:11,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1289306960, now seen corresponding path program 1 times [2021-11-05 14:02:11,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:11,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336729489] [2021-11-05 14:02:11,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:11,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:11,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:11,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336729489] [2021-11-05 14:02:11,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336729489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:11,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:11,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 14:02:11,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585604561] [2021-11-05 14:02:11,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:11,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 14:02:11,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:11,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 14:02:11,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 14:02:11,488 INFO L87 Difference]: Start difference. First operand 3517 states and 4617 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2021-11-05 14:02:12,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:12,413 INFO L93 Difference]: Finished difference Result 11542 states and 15215 transitions. [2021-11-05 14:02:12,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-05 14:02:12,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) Word has length 47 [2021-11-05 14:02:12,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:12,427 INFO L225 Difference]: With dead ends: 11542 [2021-11-05 14:02:12,427 INFO L226 Difference]: Without dead ends: 8978 [2021-11-05 14:02:12,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 106.65ms TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-11-05 14:02:12,432 INFO L933 BasicCegarLoop]: 1526 mSDtfsCounter, 2894 mSDsluCounter, 3293 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 187.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2894 SdHoareTripleChecker+Valid, 4819 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.96ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 228.64ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:12,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2894 Valid, 4819 Invalid, 235 Unknown, 0 Unchecked, 7.96ms Time], IncrementalHoareTripleChecker [29 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 228.64ms Time] [2021-11-05 14:02:12,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8978 states. [2021-11-05 14:02:12,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8978 to 3533. [2021-11-05 14:02:12,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3533 states, 3522 states have (on average 1.3154457694491766) internal successors, (4633), 3532 states have internal predecessors, (4633), 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) [2021-11-05 14:02:12,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3533 states to 3533 states and 4633 transitions. [2021-11-05 14:02:12,649 INFO L78 Accepts]: Start accepts. Automaton has 3533 states and 4633 transitions. Word has length 47 [2021-11-05 14:02:12,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:12,649 INFO L470 AbstractCegarLoop]: Abstraction has 3533 states and 4633 transitions. [2021-11-05 14:02:12,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 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) [2021-11-05 14:02:12,649 INFO L276 IsEmpty]: Start isEmpty. Operand 3533 states and 4633 transitions. [2021-11-05 14:02:12,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 14:02:12,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:12,650 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] [2021-11-05 14:02:12,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-05 14:02:12,650 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:12,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:12,650 INFO L85 PathProgramCache]: Analyzing trace with hash 523835089, now seen corresponding path program 1 times [2021-11-05 14:02:12,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:12,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012385850] [2021-11-05 14:02:12,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:12,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:12,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:12,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:12,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012385850] [2021-11-05 14:02:12,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012385850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:12,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:12,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 14:02:12,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040917962] [2021-11-05 14:02:12,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:12,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:02:12,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:12,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:02:12,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:02:12,728 INFO L87 Difference]: Start difference. First operand 3533 states and 4633 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2021-11-05 14:02:13,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:13,314 INFO L93 Difference]: Finished difference Result 11349 states and 14904 transitions. [2021-11-05 14:02:13,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 14:02:13,314 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) Word has length 51 [2021-11-05 14:02:13,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:13,324 INFO L225 Difference]: With dead ends: 11349 [2021-11-05 14:02:13,324 INFO L226 Difference]: Without dead ends: 7824 [2021-11-05 14:02:13,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.09ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:02:13,328 INFO L933 BasicCegarLoop]: 1197 mSDtfsCounter, 867 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 2815 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.85ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.73ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:13,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 2815 Invalid, 42 Unknown, 0 Unchecked, 2.85ms Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 68.73ms Time] [2021-11-05 14:02:13,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7824 states. [2021-11-05 14:02:13,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7824 to 2999. [2021-11-05 14:02:13,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2988 states have (on average 1.3119143239625168) internal successors, (3920), 2998 states have internal predecessors, (3920), 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) [2021-11-05 14:02:13,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 3920 transitions. [2021-11-05 14:02:13,529 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 3920 transitions. Word has length 51 [2021-11-05 14:02:13,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:13,530 INFO L470 AbstractCegarLoop]: Abstraction has 2999 states and 3920 transitions. [2021-11-05 14:02:13,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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) [2021-11-05 14:02:13,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 3920 transitions. [2021-11-05 14:02:13,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-05 14:02:13,531 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:13,531 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] [2021-11-05 14:02:13,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-05 14:02:13,531 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:13,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:13,532 INFO L85 PathProgramCache]: Analyzing trace with hash 291347065, now seen corresponding path program 1 times [2021-11-05 14:02:13,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:13,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431624416] [2021-11-05 14:02:13,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:13,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:13,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:13,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:13,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431624416] [2021-11-05 14:02:13,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431624416] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:13,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:13,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 14:02:13,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855699582] [2021-11-05 14:02:13,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:13,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:02:13,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:13,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:02:13,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:02:13,594 INFO L87 Difference]: Start difference. First operand 2999 states and 3920 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2021-11-05 14:02:14,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:14,295 INFO L93 Difference]: Finished difference Result 9993 states and 13045 transitions. [2021-11-05 14:02:14,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 14:02:14,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) Word has length 52 [2021-11-05 14:02:14,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:14,304 INFO L225 Difference]: With dead ends: 9993 [2021-11-05 14:02:14,305 INFO L226 Difference]: Without dead ends: 7413 [2021-11-05 14:02:14,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.22ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:02:14,309 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 1354 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.27ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78.82ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:14,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1354 Valid, 2696 Invalid, 25 Unknown, 0 Unchecked, 3.27ms Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 78.82ms Time] [2021-11-05 14:02:14,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7413 states. [2021-11-05 14:02:14,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7413 to 2791. [2021-11-05 14:02:14,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2780 states have (on average 1.3071942446043165) internal successors, (3634), 2790 states have internal predecessors, (3634), 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) [2021-11-05 14:02:14,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 3634 transitions. [2021-11-05 14:02:14,540 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 3634 transitions. Word has length 52 [2021-11-05 14:02:14,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:14,540 INFO L470 AbstractCegarLoop]: Abstraction has 2791 states and 3634 transitions. [2021-11-05 14:02:14,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2021-11-05 14:02:14,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 3634 transitions. [2021-11-05 14:02:14,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-05 14:02:14,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:14,542 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] [2021-11-05 14:02:14,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 14:02:14,542 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:14,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:14,542 INFO L85 PathProgramCache]: Analyzing trace with hash -729721289, now seen corresponding path program 1 times [2021-11-05 14:02:14,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:14,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107160018] [2021-11-05 14:02:14,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:14,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:14,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:14,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107160018] [2021-11-05 14:02:14,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107160018] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:14,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:14,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 14:02:14,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212055594] [2021-11-05 14:02:14,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:14,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 14:02:14,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:14,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 14:02:14,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:02:14,610 INFO L87 Difference]: Start difference. First operand 2791 states and 3634 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2021-11-05 14:02:15,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:15,987 INFO L93 Difference]: Finished difference Result 16519 states and 21743 transitions. [2021-11-05 14:02:15,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 14:02:15,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) Word has length 52 [2021-11-05 14:02:15,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:16,005 INFO L225 Difference]: With dead ends: 16519 [2021-11-05 14:02:16,005 INFO L226 Difference]: Without dead ends: 15196 [2021-11-05 14:02:16,009 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 27.57ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 14:02:16,010 INFO L933 BasicCegarLoop]: 1441 mSDtfsCounter, 1931 mSDsluCounter, 3585 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1931 SdHoareTripleChecker+Valid, 5026 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.01ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.70ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:16,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1931 Valid, 5026 Invalid, 181 Unknown, 0 Unchecked, 6.01ms Time], IncrementalHoareTripleChecker [16 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 108.70ms Time] [2021-11-05 14:02:16,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15196 states. [2021-11-05 14:02:16,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15196 to 2839. [2021-11-05 14:02:16,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2839 states, 2828 states have (on average 1.301980198019802) internal successors, (3682), 2838 states have internal predecessors, (3682), 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) [2021-11-05 14:02:16,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2839 states to 2839 states and 3682 transitions. [2021-11-05 14:02:16,323 INFO L78 Accepts]: Start accepts. Automaton has 2839 states and 3682 transitions. Word has length 52 [2021-11-05 14:02:16,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:16,323 INFO L470 AbstractCegarLoop]: Abstraction has 2839 states and 3682 transitions. [2021-11-05 14:02:16,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2021-11-05 14:02:16,323 INFO L276 IsEmpty]: Start isEmpty. Operand 2839 states and 3682 transitions. [2021-11-05 14:02:16,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-05 14:02:16,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:16,324 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] [2021-11-05 14:02:16,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-05 14:02:16,325 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:16,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:16,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1876302265, now seen corresponding path program 1 times [2021-11-05 14:02:16,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:16,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344315149] [2021-11-05 14:02:16,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:16,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:16,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:16,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:16,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344315149] [2021-11-05 14:02:16,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344315149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:16,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:16,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 14:02:16,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169798066] [2021-11-05 14:02:16,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:16,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 14:02:16,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:16,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 14:02:16,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 14:02:16,375 INFO L87 Difference]: Start difference. First operand 2839 states and 3682 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2021-11-05 14:02:16,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:16,694 INFO L93 Difference]: Finished difference Result 5333 states and 6923 transitions. [2021-11-05 14:02:16,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 14:02:16,695 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) Word has length 52 [2021-11-05 14:02:16,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:16,700 INFO L225 Difference]: With dead ends: 5333 [2021-11-05 14:02:16,700 INFO L226 Difference]: Without dead ends: 3986 [2021-11-05 14:02:16,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.25ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 14:02:16,703 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 438 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.50ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.20ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:16,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 1361 Invalid, 20 Unknown, 0 Unchecked, 1.50ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 19.20ms Time] [2021-11-05 14:02:16,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2021-11-05 14:02:16,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 2847. [2021-11-05 14:02:16,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2847 states, 2836 states have (on average 1.3011283497884345) internal successors, (3690), 2846 states have internal predecessors, (3690), 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) [2021-11-05 14:02:16,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 3690 transitions. [2021-11-05 14:02:16,935 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 3690 transitions. Word has length 52 [2021-11-05 14:02:16,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:16,936 INFO L470 AbstractCegarLoop]: Abstraction has 2847 states and 3690 transitions. [2021-11-05 14:02:16,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2021-11-05 14:02:16,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 3690 transitions. [2021-11-05 14:02:16,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 14:02:16,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:16,937 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:02:16,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-05 14:02:16,937 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:16,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:16,938 INFO L85 PathProgramCache]: Analyzing trace with hash -873150611, now seen corresponding path program 1 times [2021-11-05 14:02:16,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:16,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86164357] [2021-11-05 14:02:16,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:16,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:16,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:17,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:17,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:17,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86164357] [2021-11-05 14:02:17,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86164357] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:17,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:17,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 14:02:17,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131393041] [2021-11-05 14:02:17,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:17,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 14:02:17,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:17,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 14:02:17,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-05 14:02:17,078 INFO L87 Difference]: Start difference. First operand 2847 states and 3690 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 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) [2021-11-05 14:02:19,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:19,433 INFO L93 Difference]: Finished difference Result 14958 states and 19505 transitions. [2021-11-05 14:02:19,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-05 14:02:19,434 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 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) Word has length 53 [2021-11-05 14:02:19,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:19,447 INFO L225 Difference]: With dead ends: 14958 [2021-11-05 14:02:19,447 INFO L226 Difference]: Without dead ends: 12530 [2021-11-05 14:02:19,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 441.09ms TimeCoverageRelationStatistics Valid=570, Invalid=2082, Unknown=0, NotChecked=0, Total=2652 [2021-11-05 14:02:19,453 INFO L933 BasicCegarLoop]: 1546 mSDtfsCounter, 5010 mSDsluCounter, 5630 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 388.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5010 SdHoareTripleChecker+Valid, 7176 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.31ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 487.15ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:19,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5010 Valid, 7176 Invalid, 444 Unknown, 0 Unchecked, 12.31ms Time], IncrementalHoareTripleChecker [35 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 487.15ms Time] [2021-11-05 14:02:19,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12530 states. [2021-11-05 14:02:19,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12530 to 2845. [2021-11-05 14:02:19,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2845 states, 2834 states have (on average 1.297106563161609) internal successors, (3676), 2844 states have internal predecessors, (3676), 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) [2021-11-05 14:02:19,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 3676 transitions. [2021-11-05 14:02:19,755 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 3676 transitions. Word has length 53 [2021-11-05 14:02:19,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:19,755 INFO L470 AbstractCegarLoop]: Abstraction has 2845 states and 3676 transitions. [2021-11-05 14:02:19,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 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) [2021-11-05 14:02:19,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 3676 transitions. [2021-11-05 14:02:19,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 14:02:19,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:19,756 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:02:19,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-05 14:02:19,757 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:19,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:19,757 INFO L85 PathProgramCache]: Analyzing trace with hash 24644017, now seen corresponding path program 1 times [2021-11-05 14:02:19,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:19,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564289301] [2021-11-05 14:02:19,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:19,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:19,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:19,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564289301] [2021-11-05 14:02:19,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564289301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:19,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:19,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 14:02:19,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325366915] [2021-11-05 14:02:19,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:19,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:02:19,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:19,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:02:19,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:02:19,802 INFO L87 Difference]: Start difference. First operand 2845 states and 3676 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2021-11-05 14:02:20,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:20,288 INFO L93 Difference]: Finished difference Result 5701 states and 7365 transitions. [2021-11-05 14:02:20,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 14:02:20,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) Word has length 53 [2021-11-05 14:02:20,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:20,292 INFO L225 Difference]: With dead ends: 5701 [2021-11-05 14:02:20,292 INFO L226 Difference]: Without dead ends: 2862 [2021-11-05 14:02:20,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.99ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:02:20,296 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 15 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 171.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.95ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 185.84ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:20,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1505 Invalid, 10 Unknown, 0 Unchecked, 0.95ms Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 185.84ms Time] [2021-11-05 14:02:20,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2021-11-05 14:02:20,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2849. [2021-11-05 14:02:20,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2849 states, 2838 states have (on average 1.2963354474982383) internal successors, (3679), 2848 states have internal predecessors, (3679), 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) [2021-11-05 14:02:20,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 3679 transitions. [2021-11-05 14:02:20,576 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 3679 transitions. Word has length 53 [2021-11-05 14:02:20,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:20,577 INFO L470 AbstractCegarLoop]: Abstraction has 2849 states and 3679 transitions. [2021-11-05 14:02:20,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2021-11-05 14:02:20,577 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 3679 transitions. [2021-11-05 14:02:20,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-05 14:02:20,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:20,577 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] [2021-11-05 14:02:20,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-05 14:02:20,578 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:20,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:20,578 INFO L85 PathProgramCache]: Analyzing trace with hash 446058872, now seen corresponding path program 1 times [2021-11-05 14:02:20,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:20,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899202281] [2021-11-05 14:02:20,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:20,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:20,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:20,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899202281] [2021-11-05 14:02:20,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899202281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:20,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:20,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 14:02:20,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176837893] [2021-11-05 14:02:20,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:20,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:02:20,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:20,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:02:20,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:02:20,641 INFO L87 Difference]: Start difference. First operand 2849 states and 3679 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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) [2021-11-05 14:02:21,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:21,281 INFO L93 Difference]: Finished difference Result 4213 states and 5426 transitions. [2021-11-05 14:02:21,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 14:02:21,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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) Word has length 54 [2021-11-05 14:02:21,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:21,285 INFO L225 Difference]: With dead ends: 4213 [2021-11-05 14:02:21,286 INFO L226 Difference]: Without dead ends: 4207 [2021-11-05 14:02:21,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.73ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:02:21,287 INFO L933 BasicCegarLoop]: 896 mSDtfsCounter, 846 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 200.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.09ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 217.31ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:21,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 1868 Invalid, 44 Unknown, 0 Unchecked, 2.09ms Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 217.31ms Time] [2021-11-05 14:02:21,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2021-11-05 14:02:21,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 4161. [2021-11-05 14:02:21,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4161 states, 4150 states have (on average 1.296144578313253) internal successors, (5379), 4160 states have internal predecessors, (5379), 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) [2021-11-05 14:02:21,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4161 states to 4161 states and 5379 transitions. [2021-11-05 14:02:21,681 INFO L78 Accepts]: Start accepts. Automaton has 4161 states and 5379 transitions. Word has length 54 [2021-11-05 14:02:21,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:21,681 INFO L470 AbstractCegarLoop]: Abstraction has 4161 states and 5379 transitions. [2021-11-05 14:02:21,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 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) [2021-11-05 14:02:21,681 INFO L276 IsEmpty]: Start isEmpty. Operand 4161 states and 5379 transitions. [2021-11-05 14:02:21,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-05 14:02:21,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:21,682 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:02:21,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-05 14:02:21,682 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:21,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:21,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1584391570, now seen corresponding path program 1 times [2021-11-05 14:02:21,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:21,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620286991] [2021-11-05 14:02:21,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:21,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:21,880 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 14:02:21,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:21,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620286991] [2021-11-05 14:02:21,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620286991] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:21,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:21,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 14:02:21,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664579978] [2021-11-05 14:02:21,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:21,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:02:21,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:21,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:02:21,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:02:21,882 INFO L87 Difference]: Start difference. First operand 4161 states and 5379 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2021-11-05 14:02:22,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:22,341 INFO L93 Difference]: Finished difference Result 8316 states and 10751 transitions. [2021-11-05 14:02:22,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 14:02:22,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) Word has length 55 [2021-11-05 14:02:22,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:22,346 INFO L225 Difference]: With dead ends: 8316 [2021-11-05 14:02:22,346 INFO L226 Difference]: Without dead ends: 4161 [2021-11-05 14:02:22,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.68ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:02:22,349 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 1 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.88ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.87ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:22,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1501 Invalid, 7 Unknown, 0 Unchecked, 0.88ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 3.87ms Time] [2021-11-05 14:02:22,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4161 states. [2021-11-05 14:02:22,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4161 to 4161. [2021-11-05 14:02:22,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4161 states, 4150 states have (on average 1.2959036144578313) internal successors, (5378), 4160 states have internal predecessors, (5378), 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) [2021-11-05 14:02:22,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4161 states to 4161 states and 5378 transitions. [2021-11-05 14:02:22,733 INFO L78 Accepts]: Start accepts. Automaton has 4161 states and 5378 transitions. Word has length 55 [2021-11-05 14:02:22,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:22,734 INFO L470 AbstractCegarLoop]: Abstraction has 4161 states and 5378 transitions. [2021-11-05 14:02:22,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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) [2021-11-05 14:02:22,734 INFO L276 IsEmpty]: Start isEmpty. Operand 4161 states and 5378 transitions. [2021-11-05 14:02:22,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-05 14:02:22,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:22,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:02:22,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-05 14:02:22,735 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:22,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:22,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1103311312, now seen corresponding path program 1 times [2021-11-05 14:02:22,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:22,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966813343] [2021-11-05 14:02:22,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:22,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:22,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-05 14:02:22,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:22,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966813343] [2021-11-05 14:02:22,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966813343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:22,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:22,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 14:02:22,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274028581] [2021-11-05 14:02:22,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:22,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:02:22,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:22,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:02:22,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:02:22,891 INFO L87 Difference]: Start difference. First operand 4161 states and 5378 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 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) [2021-11-05 14:02:24,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:24,095 INFO L93 Difference]: Finished difference Result 10859 states and 14066 transitions. [2021-11-05 14:02:24,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 14:02:24,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 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) Word has length 55 [2021-11-05 14:02:24,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:24,104 INFO L225 Difference]: With dead ends: 10859 [2021-11-05 14:02:24,104 INFO L226 Difference]: Without dead ends: 8950 [2021-11-05 14:02:24,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.31ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:02:24,108 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 766 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 156.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.13ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 182.15ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:24,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 1768 Invalid, 88 Unknown, 0 Unchecked, 2.13ms Time], IncrementalHoareTripleChecker [17 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 182.15ms Time] [2021-11-05 14:02:24,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8950 states. [2021-11-05 14:02:24,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8950 to 8709. [2021-11-05 14:02:24,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8709 states, 8698 states have (on average 1.2994941365831225) internal successors, (11303), 8708 states have internal predecessors, (11303), 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) [2021-11-05 14:02:25,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8709 states to 8709 states and 11303 transitions. [2021-11-05 14:02:25,010 INFO L78 Accepts]: Start accepts. Automaton has 8709 states and 11303 transitions. Word has length 55 [2021-11-05 14:02:25,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:25,010 INFO L470 AbstractCegarLoop]: Abstraction has 8709 states and 11303 transitions. [2021-11-05 14:02:25,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 3 states have internal predecessors, (53), 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) [2021-11-05 14:02:25,010 INFO L276 IsEmpty]: Start isEmpty. Operand 8709 states and 11303 transitions. [2021-11-05 14:02:25,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-05 14:02:25,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:25,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:02:25,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-05 14:02:25,011 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:25,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:25,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1514792705, now seen corresponding path program 1 times [2021-11-05 14:02:25,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:25,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685449572] [2021-11-05 14:02:25,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:25,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:25,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:25,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:25,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685449572] [2021-11-05 14:02:25,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685449572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:25,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:25,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 14:02:25,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007403326] [2021-11-05 14:02:25,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:25,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 14:02:25,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:25,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 14:02:25,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 14:02:25,080 INFO L87 Difference]: Start difference. First operand 8709 states and 11303 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2021-11-05 14:02:27,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:27,943 INFO L93 Difference]: Finished difference Result 25969 states and 33869 transitions. [2021-11-05 14:02:27,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-05 14:02:27,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) Word has length 56 [2021-11-05 14:02:27,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:27,979 INFO L225 Difference]: With dead ends: 25969 [2021-11-05 14:02:27,980 INFO L226 Difference]: Without dead ends: 22427 [2021-11-05 14:02:27,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 106.94ms TimeCoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2021-11-05 14:02:27,992 INFO L933 BasicCegarLoop]: 1589 mSDtfsCounter, 2896 mSDsluCounter, 3629 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 153.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2896 SdHoareTripleChecker+Valid, 5218 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.14ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 180.46ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:27,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2896 Valid, 5218 Invalid, 236 Unknown, 0 Unchecked, 7.14ms Time], IncrementalHoareTripleChecker [23 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 180.46ms Time] [2021-11-05 14:02:28,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22427 states. [2021-11-05 14:02:29,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22427 to 8709. [2021-11-05 14:02:29,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8709 states, 8698 states have (on average 1.2978845711657852) internal successors, (11289), 8708 states have internal predecessors, (11289), 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) [2021-11-05 14:02:29,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8709 states to 8709 states and 11289 transitions. [2021-11-05 14:02:29,043 INFO L78 Accepts]: Start accepts. Automaton has 8709 states and 11289 transitions. Word has length 56 [2021-11-05 14:02:29,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:29,043 INFO L470 AbstractCegarLoop]: Abstraction has 8709 states and 11289 transitions. [2021-11-05 14:02:29,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2021-11-05 14:02:29,043 INFO L276 IsEmpty]: Start isEmpty. Operand 8709 states and 11289 transitions. [2021-11-05 14:02:29,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-05 14:02:29,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:29,044 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] [2021-11-05 14:02:29,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-05 14:02:29,044 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:29,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:29,045 INFO L85 PathProgramCache]: Analyzing trace with hash 850396480, now seen corresponding path program 1 times [2021-11-05 14:02:29,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:29,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024562772] [2021-11-05 14:02:29,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:29,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:29,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:29,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:29,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024562772] [2021-11-05 14:02:29,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024562772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:29,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:29,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 14:02:29,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058485621] [2021-11-05 14:02:29,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:29,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 14:02:29,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:29,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 14:02:29,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:02:29,103 INFO L87 Difference]: Start difference. First operand 8709 states and 11289 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2021-11-05 14:02:30,254 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 14:02:32,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:32,423 INFO L93 Difference]: Finished difference Result 23747 states and 30994 transitions. [2021-11-05 14:02:32,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 14:02:32,424 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) Word has length 58 [2021-11-05 14:02:32,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:32,443 INFO L225 Difference]: With dead ends: 23747 [2021-11-05 14:02:32,443 INFO L226 Difference]: Without dead ends: 15040 [2021-11-05 14:02:32,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.79ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 14:02:32,457 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 380 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1404.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.39ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1438.98ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:32,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 2666 Invalid, 82 Unknown, 0 Unchecked, 2.39ms Time], IncrementalHoareTripleChecker [9 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 1438.98ms Time] [2021-11-05 14:02:32,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15040 states. [2021-11-05 14:02:33,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15040 to 8718. [2021-11-05 14:02:33,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8718 states, 8707 states have (on average 1.2973469622143103) internal successors, (11296), 8717 states have internal predecessors, (11296), 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) [2021-11-05 14:02:33,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8718 states to 8718 states and 11296 transitions. [2021-11-05 14:02:33,486 INFO L78 Accepts]: Start accepts. Automaton has 8718 states and 11296 transitions. Word has length 58 [2021-11-05 14:02:33,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:33,486 INFO L470 AbstractCegarLoop]: Abstraction has 8718 states and 11296 transitions. [2021-11-05 14:02:33,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 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) [2021-11-05 14:02:33,487 INFO L276 IsEmpty]: Start isEmpty. Operand 8718 states and 11296 transitions. [2021-11-05 14:02:33,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-05 14:02:33,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:33,488 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] [2021-11-05 14:02:33,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-05 14:02:33,488 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:33,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:33,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1274043202, now seen corresponding path program 1 times [2021-11-05 14:02:33,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:33,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105591414] [2021-11-05 14:02:33,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:33,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:33,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:33,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:33,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105591414] [2021-11-05 14:02:33,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105591414] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:33,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:33,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 14:02:33,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655562162] [2021-11-05 14:02:33,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:33,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 14:02:33,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:33,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 14:02:33,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 14:02:33,535 INFO L87 Difference]: Start difference. First operand 8718 states and 11296 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-05 14:02:34,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:34,514 INFO L93 Difference]: Finished difference Result 17476 states and 22648 transitions. [2021-11-05 14:02:34,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 14:02:34,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) Word has length 58 [2021-11-05 14:02:34,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:34,527 INFO L225 Difference]: With dead ends: 17476 [2021-11-05 14:02:34,527 INFO L226 Difference]: Without dead ends: 8766 [2021-11-05 14:02:34,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.20ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 14:02:34,537 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 1 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.69ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.11ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:34,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 997 Invalid, 6 Unknown, 0 Unchecked, 0.69ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 4.11ms Time] [2021-11-05 14:02:34,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8766 states. [2021-11-05 14:02:35,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8766 to 8750. [2021-11-05 14:02:35,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8750 states, 8739 states have (on average 1.2962581531067627) internal successors, (11328), 8749 states have internal predecessors, (11328), 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) [2021-11-05 14:02:35,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8750 states to 8750 states and 11328 transitions. [2021-11-05 14:02:35,537 INFO L78 Accepts]: Start accepts. Automaton has 8750 states and 11328 transitions. Word has length 58 [2021-11-05 14:02:35,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:35,538 INFO L470 AbstractCegarLoop]: Abstraction has 8750 states and 11328 transitions. [2021-11-05 14:02:35,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-11-05 14:02:35,538 INFO L276 IsEmpty]: Start isEmpty. Operand 8750 states and 11328 transitions. [2021-11-05 14:02:35,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-05 14:02:35,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:35,539 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] [2021-11-05 14:02:35,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-05 14:02:35,539 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:35,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:35,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1482038547, now seen corresponding path program 1 times [2021-11-05 14:02:35,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:35,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155352692] [2021-11-05 14:02:35,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:35,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:35,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:35,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:35,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155352692] [2021-11-05 14:02:35,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155352692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:35,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:35,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 14:02:35,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213588821] [2021-11-05 14:02:35,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:35,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:02:35,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:35,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:02:35,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:02:35,594 INFO L87 Difference]: Start difference. First operand 8750 states and 11328 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-05 14:02:38,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:38,548 INFO L93 Difference]: Finished difference Result 33275 states and 42756 transitions. [2021-11-05 14:02:38,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 14:02:38,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) Word has length 59 [2021-11-05 14:02:38,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:38,581 INFO L225 Difference]: With dead ends: 33275 [2021-11-05 14:02:38,581 INFO L226 Difference]: Without dead ends: 24533 [2021-11-05 14:02:38,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.89ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:02:38,594 INFO L933 BasicCegarLoop]: 1140 mSDtfsCounter, 1015 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 2780 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.19ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.83ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:38,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 2780 Invalid, 36 Unknown, 0 Unchecked, 3.19ms Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 31.83ms Time] [2021-11-05 14:02:38,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24533 states. [2021-11-05 14:02:39,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24533 to 8814. [2021-11-05 14:02:39,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8814 states, 8803 states have (on average 1.2941042826309213) internal successors, (11392), 8813 states have internal predecessors, (11392), 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) [2021-11-05 14:02:39,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8814 states to 8814 states and 11392 transitions. [2021-11-05 14:02:39,794 INFO L78 Accepts]: Start accepts. Automaton has 8814 states and 11392 transitions. Word has length 59 [2021-11-05 14:02:39,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:39,795 INFO L470 AbstractCegarLoop]: Abstraction has 8814 states and 11392 transitions. [2021-11-05 14:02:39,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-05 14:02:39,795 INFO L276 IsEmpty]: Start isEmpty. Operand 8814 states and 11392 transitions. [2021-11-05 14:02:39,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-05 14:02:39,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:39,796 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] [2021-11-05 14:02:39,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-05 14:02:39,796 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:39,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:39,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1678973000, now seen corresponding path program 1 times [2021-11-05 14:02:39,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:39,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789330580] [2021-11-05 14:02:39,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:39,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:39,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:39,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:39,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789330580] [2021-11-05 14:02:39,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789330580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:39,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:39,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 14:02:39,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510319552] [2021-11-05 14:02:39,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:39,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:02:39,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:39,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:02:39,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:02:39,860 INFO L87 Difference]: Start difference. First operand 8814 states and 11392 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-05 14:02:43,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:43,123 INFO L93 Difference]: Finished difference Result 31078 states and 40126 transitions. [2021-11-05 14:02:43,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 14:02:43,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) Word has length 59 [2021-11-05 14:02:43,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:43,154 INFO L225 Difference]: With dead ends: 31078 [2021-11-05 14:02:43,155 INFO L226 Difference]: Without dead ends: 23690 [2021-11-05 14:02:43,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.19ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:02:43,169 INFO L933 BasicCegarLoop]: 1396 mSDtfsCounter, 785 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.72ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.36ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:43,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 3008 Invalid, 29 Unknown, 0 Unchecked, 3.72ms Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 56.36ms Time] [2021-11-05 14:02:43,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23690 states. [2021-11-05 14:02:44,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23690 to 8689. [2021-11-05 14:02:44,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8689 states, 8678 states have (on average 1.293500806637474) internal successors, (11225), 8688 states have internal predecessors, (11225), 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) [2021-11-05 14:02:44,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8689 states to 8689 states and 11225 transitions. [2021-11-05 14:02:44,487 INFO L78 Accepts]: Start accepts. Automaton has 8689 states and 11225 transitions. Word has length 59 [2021-11-05 14:02:44,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:44,487 INFO L470 AbstractCegarLoop]: Abstraction has 8689 states and 11225 transitions. [2021-11-05 14:02:44,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-11-05 14:02:44,488 INFO L276 IsEmpty]: Start isEmpty. Operand 8689 states and 11225 transitions. [2021-11-05 14:02:44,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-05 14:02:44,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:44,489 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] [2021-11-05 14:02:44,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-05 14:02:44,489 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:44,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:44,489 INFO L85 PathProgramCache]: Analyzing trace with hash -940767085, now seen corresponding path program 1 times [2021-11-05 14:02:44,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:44,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948963537] [2021-11-05 14:02:44,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:44,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:44,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:44,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948963537] [2021-11-05 14:02:44,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948963537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:44,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:44,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 14:02:44,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854711169] [2021-11-05 14:02:44,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:44,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 14:02:44,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:44,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 14:02:44,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-05 14:02:44,613 INFO L87 Difference]: Start difference. First operand 8689 states and 11225 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 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) [2021-11-05 14:02:50,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:50,945 INFO L93 Difference]: Finished difference Result 45877 states and 59552 transitions. [2021-11-05 14:02:50,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-05 14:02:50,945 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 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) Word has length 60 [2021-11-05 14:02:50,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:50,999 INFO L225 Difference]: With dead ends: 45877 [2021-11-05 14:02:50,999 INFO L226 Difference]: Without dead ends: 38193 [2021-11-05 14:02:51,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 472.04ms TimeCoverageRelationStatistics Valid=570, Invalid=2082, Unknown=0, NotChecked=0, Total=2652 [2021-11-05 14:02:51,014 INFO L933 BasicCegarLoop]: 1534 mSDtfsCounter, 4237 mSDsluCounter, 4084 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 325.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4237 SdHoareTripleChecker+Valid, 5618 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.71ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 378.12ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:51,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4237 Valid, 5618 Invalid, 408 Unknown, 0 Unchecked, 10.71ms Time], IncrementalHoareTripleChecker [41 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 378.12ms Time] [2021-11-05 14:02:51,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38193 states. [2021-11-05 14:02:52,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38193 to 8635. [2021-11-05 14:02:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8635 states, 8624 states have (on average 1.2911641929499071) internal successors, (11135), 8634 states have internal predecessors, (11135), 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) [2021-11-05 14:02:52,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8635 states to 8635 states and 11135 transitions. [2021-11-05 14:02:52,352 INFO L78 Accepts]: Start accepts. Automaton has 8635 states and 11135 transitions. Word has length 60 [2021-11-05 14:02:52,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:52,352 INFO L470 AbstractCegarLoop]: Abstraction has 8635 states and 11135 transitions. [2021-11-05 14:02:52,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 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) [2021-11-05 14:02:52,352 INFO L276 IsEmpty]: Start isEmpty. Operand 8635 states and 11135 transitions. [2021-11-05 14:02:52,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-05 14:02:52,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:52,353 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] [2021-11-05 14:02:52,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-05 14:02:52,354 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:52,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:52,354 INFO L85 PathProgramCache]: Analyzing trace with hash 306863343, now seen corresponding path program 1 times [2021-11-05 14:02:52,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:52,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250964400] [2021-11-05 14:02:52,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:52,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:52,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:52,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:52,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250964400] [2021-11-05 14:02:52,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250964400] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 14:02:52,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490623880] [2021-11-05 14:02:52,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:52,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 14:02:52,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 14:02:52,404 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) [2021-11-05 14:02:52,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 14:02:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:52,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 14:02:52,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:02:52,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:52,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:02:52,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:52,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490623880] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 14:02:52,918 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-05 14:02:52,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-05 14:02:52,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654968364] [2021-11-05 14:02:52,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-05 14:02:52,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 14:02:52,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:52,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 14:02:52,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-05 14:02:52,920 INFO L87 Difference]: Start difference. First operand 8635 states and 11135 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 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) [2021-11-05 14:02:54,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:02:54,184 INFO L93 Difference]: Finished difference Result 17406 states and 22454 transitions. [2021-11-05 14:02:54,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 14:02:54,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 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) Word has length 61 [2021-11-05 14:02:54,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:02:54,195 INFO L225 Difference]: With dead ends: 17406 [2021-11-05 14:02:54,195 INFO L226 Difference]: Without dead ends: 8779 [2021-11-05 14:02:54,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 11.35ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-05 14:02:54,203 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 6 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.94ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.01ms IncrementalHoareTripleChecker+Time [2021-11-05 14:02:54,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 997 Invalid, 18 Unknown, 0 Unchecked, 0.94ms Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 25.01ms Time] [2021-11-05 14:02:54,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8779 states. [2021-11-05 14:02:55,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8779 to 8779. [2021-11-05 14:02:55,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8779 states, 8768 states have (on average 1.286382299270073) internal successors, (11279), 8778 states have internal predecessors, (11279), 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) [2021-11-05 14:02:55,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8779 states to 8779 states and 11279 transitions. [2021-11-05 14:02:55,414 INFO L78 Accepts]: Start accepts. Automaton has 8779 states and 11279 transitions. Word has length 61 [2021-11-05 14:02:55,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:02:55,415 INFO L470 AbstractCegarLoop]: Abstraction has 8779 states and 11279 transitions. [2021-11-05 14:02:55,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 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) [2021-11-05 14:02:55,415 INFO L276 IsEmpty]: Start isEmpty. Operand 8779 states and 11279 transitions. [2021-11-05 14:02:55,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-05 14:02:55,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:02:55,416 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:02:55,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 14:02:55,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-05 14:02:55,619 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:02:55,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:02:55,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1699998706, now seen corresponding path program 1 times [2021-11-05 14:02:55,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:02:55,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151996116] [2021-11-05 14:02:55,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:02:55,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:02:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:02:55,735 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:02:55,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:02:55,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151996116] [2021-11-05 14:02:55,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151996116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:02:55,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:02:55,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 14:02:55,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664964422] [2021-11-05 14:02:55,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:02:55,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 14:02:55,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:02:55,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 14:02:55,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-05 14:02:55,737 INFO L87 Difference]: Start difference. First operand 8779 states and 11279 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 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) [2021-11-05 14:03:00,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:00,706 INFO L93 Difference]: Finished difference Result 32486 states and 41796 transitions. [2021-11-05 14:03:00,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-05 14:03:00,707 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 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) Word has length 62 [2021-11-05 14:03:00,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:00,741 INFO L225 Difference]: With dead ends: 32486 [2021-11-05 14:03:00,742 INFO L226 Difference]: Without dead ends: 27091 [2021-11-05 14:03:00,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 413.38ms TimeCoverageRelationStatistics Valid=570, Invalid=2082, Unknown=0, NotChecked=0, Total=2652 [2021-11-05 14:03:00,751 INFO L933 BasicCegarLoop]: 1589 mSDtfsCounter, 4337 mSDsluCounter, 6122 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 407.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4337 SdHoareTripleChecker+Valid, 7711 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.60ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 459.32ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:00,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4337 Valid, 7711 Invalid, 408 Unknown, 0 Unchecked, 11.60ms Time], IncrementalHoareTripleChecker [31 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 459.32ms Time] [2021-11-05 14:03:00,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27091 states. [2021-11-05 14:03:02,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27091 to 8753. [2021-11-05 14:03:02,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8753 states, 8742 states have (on average 1.2835735529627088) internal successors, (11221), 8752 states have internal predecessors, (11221), 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) [2021-11-05 14:03:02,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8753 states to 8753 states and 11221 transitions. [2021-11-05 14:03:02,068 INFO L78 Accepts]: Start accepts. Automaton has 8753 states and 11221 transitions. Word has length 62 [2021-11-05 14:03:02,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:02,068 INFO L470 AbstractCegarLoop]: Abstraction has 8753 states and 11221 transitions. [2021-11-05 14:03:02,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 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) [2021-11-05 14:03:02,068 INFO L276 IsEmpty]: Start isEmpty. Operand 8753 states and 11221 transitions. [2021-11-05 14:03:02,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-05 14:03:02,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:02,069 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] [2021-11-05 14:03:02,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-05 14:03:02,069 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:03:02,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:02,070 INFO L85 PathProgramCache]: Analyzing trace with hash 905815513, now seen corresponding path program 1 times [2021-11-05 14:03:02,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:03:02,070 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726096787] [2021-11-05 14:03:02,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:02,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:03:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:02,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:02,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 14:03:02,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726096787] [2021-11-05 14:03:02,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726096787] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:02,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:02,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 14:03:02,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837456622] [2021-11-05 14:03:02,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:02,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 14:03:02,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 14:03:02,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 14:03:02,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 14:03:02,130 INFO L87 Difference]: Start difference. First operand 8753 states and 11221 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2021-11-05 14:03:11,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:11,122 INFO L93 Difference]: Finished difference Result 56028 states and 73571 transitions. [2021-11-05 14:03:11,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-05 14:03:11,122 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) Word has length 63 [2021-11-05 14:03:11,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:11,215 INFO L225 Difference]: With dead ends: 56028 [2021-11-05 14:03:11,215 INFO L226 Difference]: Without dead ends: 50881 [2021-11-05 14:03:11,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 79.65ms TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-05 14:03:11,239 INFO L933 BasicCegarLoop]: 1289 mSDtfsCounter, 5015 mSDsluCounter, 5933 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 175.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5015 SdHoareTripleChecker+Valid, 7222 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.49ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 204.13ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:11,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5015 Valid, 7222 Invalid, 282 Unknown, 0 Unchecked, 10.49ms Time], IncrementalHoareTripleChecker [19 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 204.13ms Time] [2021-11-05 14:03:11,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50881 states. [2021-11-05 14:03:12,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50881 to 8717. [2021-11-05 14:03:12,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8717 states, 8706 states have (on average 1.2785435331954973) internal successors, (11131), 8716 states have internal predecessors, (11131), 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) [2021-11-05 14:03:12,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8717 states to 8717 states and 11131 transitions. [2021-11-05 14:03:12,897 INFO L78 Accepts]: Start accepts. Automaton has 8717 states and 11131 transitions. Word has length 63 [2021-11-05 14:03:12,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:12,897 INFO L470 AbstractCegarLoop]: Abstraction has 8717 states and 11131 transitions. [2021-11-05 14:03:12,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 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) [2021-11-05 14:03:12,897 INFO L276 IsEmpty]: Start isEmpty. Operand 8717 states and 11131 transitions. [2021-11-05 14:03:12,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-05 14:03:12,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:12,898 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:03:12,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-05 14:03:12,898 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:03:12,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:12,899 INFO L85 PathProgramCache]: Analyzing trace with hash -86443031, now seen corresponding path program 1 times [2021-11-05 14:03:12,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 14:03:12,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795508269] [2021-11-05 14:03:12,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:12,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 14:03:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-05 14:03:13,047 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-05 14:03:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-05 14:03:13,263 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-05 14:03:13,263 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-05 14:03:13,264 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (10 of 11 remaining) [2021-11-05 14:03:13,265 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (9 of 11 remaining) [2021-11-05 14:03:13,266 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (8 of 11 remaining) [2021-11-05 14:03:13,266 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (7 of 11 remaining) [2021-11-05 14:03:13,268 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (6 of 11 remaining) [2021-11-05 14:03:13,268 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 11 remaining) [2021-11-05 14:03:13,268 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 11 remaining) [2021-11-05 14:03:13,268 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (3 of 11 remaining) [2021-11-05 14:03:13,268 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (2 of 11 remaining) [2021-11-05 14:03:13,268 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (1 of 11 remaining) [2021-11-05 14:03:13,268 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (0 of 11 remaining) [2021-11-05 14:03:13,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-05 14:03:13,271 INFO L732 BasicCegarLoop]: Path program 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] [2021-11-05 14:03:13,272 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-05 14:03:13,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.11 02:03:13 BoogieIcfgContainer [2021-11-05 14:03:13,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-05 14:03:13,408 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-05 14:03:13,408 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-05 14:03:13,409 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-05 14:03:13,409 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:02:05" (3/4) ... [2021-11-05 14:03:13,411 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-05 14:03:13,411 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-05 14:03:13,411 INFO L158 Benchmark]: Toolchain (without parser) took 71867.79ms. Allocated memory was 67.1MB in the beginning and 3.5GB in the end (delta: 3.4GB). Free memory was 38.9MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2021-11-05 14:03:13,411 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 67.1MB. Free memory was 48.2MB in the beginning and 48.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-05 14:03:13,411 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1156.32ms. Allocated memory was 67.1MB in the beginning and 111.1MB in the end (delta: 44.0MB). Free memory was 38.6MB in the beginning and 69.5MB in the end (delta: -30.9MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. [2021-11-05 14:03:13,411 INFO L158 Benchmark]: Boogie Procedure Inliner took 102.88ms. Allocated memory is still 111.1MB. Free memory was 69.5MB in the beginning and 54.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-05 14:03:13,412 INFO L158 Benchmark]: Boogie Preprocessor took 127.53ms. Allocated memory is still 111.1MB. Free memory was 54.8MB in the beginning and 40.7MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-05 14:03:13,412 INFO L158 Benchmark]: RCFGBuilder took 2985.56ms. Allocated memory was 111.1MB in the beginning and 316.7MB in the end (delta: 205.5MB). Free memory was 40.7MB in the beginning and 230.9MB in the end (delta: -190.2MB). Peak memory consumption was 68.5MB. Max. memory is 16.1GB. [2021-11-05 14:03:13,412 INFO L158 Benchmark]: TraceAbstraction took 67487.73ms. Allocated memory was 316.7MB in the beginning and 3.5GB in the end (delta: 3.2GB). Free memory was 230.9MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2021-11-05 14:03:13,412 INFO L158 Benchmark]: Witness Printer took 2.31ms. Allocated memory is still 3.5GB. Free memory is still 1.7GB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-05 14:03:13,413 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56ms. Allocated memory is still 67.1MB. Free memory was 48.2MB in the beginning and 48.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1156.32ms. Allocated memory was 67.1MB in the beginning and 111.1MB in the end (delta: 44.0MB). Free memory was 38.6MB in the beginning and 69.5MB in the end (delta: -30.9MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 102.88ms. Allocated memory is still 111.1MB. Free memory was 69.5MB in the beginning and 54.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 127.53ms. Allocated memory is still 111.1MB. Free memory was 54.8MB in the beginning and 40.7MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * RCFGBuilder took 2985.56ms. Allocated memory was 111.1MB in the beginning and 316.7MB in the end (delta: 205.5MB). Free memory was 40.7MB in the beginning and 230.9MB in the end (delta: -190.2MB). Peak memory consumption was 68.5MB. Max. memory is 16.1GB. * TraceAbstraction took 67487.73ms. Allocated memory was 316.7MB in the beginning and 3.5GB in the end (delta: 3.2GB). Free memory was 230.9MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. * Witness Printer took 2.31ms. Allocated memory is still 3.5GB. Free memory is still 1.7GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 5143, overapproximation of bitwiseAnd at line 6104. Possible FailurePath: [L5149] static struct lock_class_key __key___7 ; [L5150] static struct lock_class_key __key___8 ; [L5290-L5303] static char const __mod_author31[46] __attribute__((__used__, __unused__, __section__(".modinfo"), __aligned__(1))) = { (char const )'a', (char const )'u', (char const )'t', (char const )'h', (char const )'o', (char const )'r', (char const )'=', (char const )'S', (char const )'e', (char const )'b', (char const )'a', (char const )'s', (char const )'t', (char const )'i', (char const )'a', (char const )'n', (char const )' ', (char const )'H', (char const )'a', (char const )'a', (char const )'s', (char const )' ', (char const )'<', (char const )'h', (char const )'a', (char const )'a', (char const )'s', (char const )'@', (char const )'e', (char const )'m', (char const )'s', (char const )'-', (char const )'w', (char const )'u', (char const )'e', (char const )'n', (char const )'s', (char const )'c', (char const )'h', (char const )'e', (char const )'.', (char const )'c', (char const )'o', (char const )'m', (char const )'>', (char const )'\000'}; [L5304-L5323] static char const __mod_description32[70] __attribute__((__used__, __unused__, __section__(".modinfo"), __aligned__(1))) = { (char const )'d', (char const )'e', (char const )'s', (char const )'c', (char const )'r', (char const )'i', (char const )'p', (char const )'t', (char const )'i', (char const )'o', (char const )'n', (char const )'=', (char const )'C', (char const )'A', (char const )'N', (char const )' ', (char const )'d', (char const )'r', (char const )'i', (char const )'v', (char const )'e', (char const )'r', (char const )' ', (char const )'f', (char const )'o', (char const )'r', (char const )' ', (char const )'E', (char const )'M', (char const )'S', (char const )' ', (char const )'D', (char const )'r', (char const )'.', (char const )' ', (char const )'T', (char const )'h', (char const )'o', (char const )'m', (char const )'a', (char const )'s', (char const )' ', (char const )'W', (char const )'u', (char const )'e', (char const )'n', (char const )'s', (char const )'c', (char const )'h', (char const )'e', (char const )' ', (char const )'C', (char const )'A', (char const )'N', (char const )'/', (char const )'U', (char const )'S', (char const )'B', (char const )' ', (char const )'i', (char const )'n', (char const )'t', (char const )'e', (char const )'r', (char const )'f', (char const )'a', (char const )'c', (char const )'e', (char const )'s', (char const )'\000'}; [L5324-L5329] static char const __mod_license33[15] __attribute__((__used__, __unused__, __section__(".modinfo"), __aligned__(1))) = { (char const )'l', (char const )'i', (char const )'c', (char const )'e', (char const )'n', (char const )'s', (char const )'e', (char const )'=', (char const )'G', (char const )'P', (char const )'L', (char const )' ', (char const )'v', (char const )'2', (char const )'\000'}; [L5330-L5332] static struct usb_device_id ems_usb_table[1] = { {(__u16 )3, (__u16 )4822, (__u16 )1092, (unsigned short)0, (unsigned short)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, 0UL}}; [L6247-L6287] static struct net_device_ops const ems_usb_netdev_ops = {(int (*)(struct net_device *dev ))0, (void (*)(struct net_device *dev ))0, & ems_usb_open, & ems_usb_close, & ems_usb_start_xmit, (u16 (*)(struct net_device *dev , struct sk_buff *skb ))0, (void (*)(struct net_device *dev , int flags ))0, (void (*)(struct net_device *dev ))0, (void (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , void *addr ))0, (int (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , struct ifreq *ifr , int cmd ))0, (int (*)(struct net_device *dev , struct ifmap *map ))0, (int (*)(struct net_device *dev , int new_mtu ))0, (int (*)(struct net_device *dev , struct neigh_parms * ))0, (void (*)(struct net_device *dev ))0, (struct rtnl_link_stats64 *(*)(struct net_device *dev , struct rtnl_link_stats64 *storage ))0, (struct net_device_stats *(*)(struct net_device *dev ))0, (void (*)(struct net_device *dev , struct vlan_group *grp ))0, (void (*)(struct net_device *dev , unsigned short vid ))0, (void (*)(struct net_device *dev , unsigned short vid ))0, (void (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , struct netpoll_info *info ))0, (void (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , int queue , u8 *mac ))0, (int (*)(struct net_device *dev , int queue , u16 vlan , u8 qos ))0, (int (*)(struct net_device *dev , int vf , int rate ))0, (int (*)(struct net_device *dev , int vf , struct ifla_vf_info *ivf ))0, (int (*)(struct net_device *dev , int vf , struct nlattr **port ))0, (int (*)(struct net_device *dev , int vf , struct sk_buff *skb ))0, (int (*)(struct net_device *dev , u8 tc ))0, (int (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev ))0, (int (*)(struct net_device *dev , u16 xid , struct scatterlist *sgl , unsigned int sgc ))0, (int (*)(struct net_device *dev , u16 xid ))0, (int (*)(struct net_device *dev , u16 xid , struct scatterlist *sgl , unsigned int sgc ))0, (int (*)(struct net_device *dev , u64 *wwn , int type ))0, (int (*)(struct net_device *dev , struct sk_buff const *skb , u16 rxq_index , u32 flow_id ))0, (int (*)(struct net_device *dev , struct net_device *slave_dev ))0, (int (*)(struct net_device *dev , struct net_device *slave_dev ))0, (u32 (*)(struct net_device *dev , u32 features ))0, (int (*)(struct net_device *dev , u32 features ))0}; [L6288-L6292] static struct can_bittiming_const ems_usb_bittiming_const = {{(char )'e', (char )'m', (char )'s', (char )'_', (char )'u', (char )'s', (char )'b', (char )'\000', (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0}, (__u32 )1, (__u32 )16, (__u32 )1, (__u32 )8, (__u32 )4, (__u32 )1, (__u32 )64, (__u32 )1}; [L6543-L6561] static struct usb_driver ems_usb_driver = {"ems_usb", & ems_usb_probe, & ems_usb_disconnect, (int (*)(struct usb_interface *intf , unsigned int code , void *buf ))0, (int (*)(struct usb_interface *intf , pm_message_t message ))0, (int (*)(struct usb_interface *intf ))0, (int (*)(struct usb_interface *intf ))0, (int (*)(struct usb_interface *intf ))0, (int (*)(struct usb_interface *intf ))0, (struct usb_device_id const *)(ems_usb_table), {{{{{0U}, 0U, 0U, (void *)0, {(struct lock_class_key *)0, {(struct lock_class *)0, (struct lock_class *)0}, (char const *)0, 0, 0UL}}}}, {(struct list_head *)0, (struct list_head *)0}}, {{(char const *)0, (struct bus_type *)0, (struct module *)0, (char const *)0, (_Bool)0, (struct of_device_id const *)0, (int (*)(struct device *dev ))0, (int (*)(struct device *dev ))0, (void (*)(struct device *dev ))0, (int (*)(struct device *dev , pm_message_t state ))0, (int (*)(struct device *dev ))0, (struct attribute_group const **)0, (struct dev_pm_ops const *)0, (struct driver_private *)0}, 0}, 0U, 0U, 0U}; [L6614] int LDV_IN_INTERRUPT ; [L6615] static int res_ems_usb_open_10 ; [L6616] static int res_ems_usb_close_12 ; [L6617] static int res_ems_usb_probe_16 ; [L6767] int ldv_urb_state = 0; [L6768] int ldv_coherent_state = 0; VAL [__key___7={107:0}, __key___8={129:0}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=0, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6619] struct net_device *var_group1 ; [L6620] struct sk_buff *var_group2 ; [L6621] struct usb_interface *var_group3 ; [L6622] struct usb_device_id const *var_ems_usb_probe_16_p1 ; [L6623] int tmp___7 ; [L6624] int ldv_s_ems_usb_netdev_ops_net_device_ops ; [L6625] int ldv_s_ems_usb_driver_usb_driver ; [L6626] int tmp___8 ; [L6627] int tmp___9 ; [L6630] LDV_IN_INTERRUPT = 1 VAL [__key___7={107:0}, __key___8={129:0}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6565] int err ; [L5140] int tmp___7 ; [L5143] CALL, EXPR usb_register_driver(driver, & __this_module, "ems_usb") [L7025] return __VERIFIER_nondet_int(); [L5143] tmp___7 = usb_register_driver(driver, & __this_module, "ems_usb") [L5145] return (tmp___7); VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6569] err = usb_register(& ems_usb_driver) [L6571] COND FALSE !(\read(err)) [L6578] return (0); VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6632] tmp___7 = ems_usb_init() [L6634] COND FALSE !(\read(tmp___7)) [L6638] ldv_s_ems_usb_netdev_ops_net_device_ops = 0 [L6639] ldv_s_ems_usb_driver_usb_driver = 0 VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6641] COND TRUE 1 VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6644] tmp___9 = __VERIFIER_nondet_int() [L6646] COND TRUE \read(tmp___9) VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6655] tmp___8 = __VERIFIER_nondet_int() [L6657] COND FALSE !(tmp___8 == 0) VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6660] COND FALSE !(tmp___8 == 1) VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6663] COND TRUE tmp___8 == 2 VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6048] struct ems_usb *dev ; [L6049] void *tmp___7 ; [L6050] struct ems_tx_urb_context *context ; [L6051] struct net_device_stats *stats ; [L6052] struct can_frame *cf ; [L6053] struct ems_cpc_msg *msg ; [L6054] struct urb *urb ; [L6055] u8 *buf ; [L6056] int i ; [L6057] int err ; [L6058] size_t size ; [L6059] int tmp___8 ; [L6060] void *tmp___9 ; [L6061] unsigned int tmp___10 ; [L6062] int tmp___11 ; [L6063] long tmp___12 ; [L4976] return ((void *)((char *)dev + ((sizeof(struct net_device ) + 31UL) & 0x0fffffffffffffe0UL))); VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6066] tmp___7 = netdev_priv((struct net_device const *)netdev) [L6067] dev = (struct ems_usb *)tmp___7 [L6068] context = (struct ems_tx_urb_context *)((void *)0) [L6069] stats = & netdev->stats [L6070] EXPR skb->data [L6070] cf = (struct can_frame *)skb->data [L6071] size = 15UL + sizeof(struct cpc_can_msg ) [L5252] struct can_frame const *cf ; [L5253] int tmp___7 ; [L5254] long tmp___8 ; [L5256] EXPR skb->data [L5256] cf = (struct can_frame const *)((struct can_frame *)skb->data) [L5257] EXPR skb->len VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L5257] COND FALSE !((unsigned long )skb->len != sizeof(*cf)) [L5260] EXPR cf->can_dlc VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L5260] COND FALSE !((int const )cf->can_dlc > 8) [L5263] tmp___7 = 0 VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L5266] tmp___8 = __builtin_expect((long )tmp___7, 0L) VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L5268] COND FALSE !(\read(tmp___8)) [L5276] return (0); VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6072] tmp___8 = can_dropped_invalid_skb(netdev, skb) [L6074] COND FALSE !(\read(tmp___8)) [L6830] void *arbitrary_memory ; [L6831] void *tmp___7 ; VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6834] COND TRUE 1 VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6911] COND FALSE !(__VERIFIER_nondet_bool()) [L6912] return malloc(size); [L6982] return ldv_malloc(0UL); [L6837] tmp___7 = ldv_undefined_pointer() [L6838] arbitrary_memory = tmp___7 VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=0, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6840] COND FALSE !(! arbitrary_memory) [L6844] ldv_urb_state = ldv_urb_state + 1 [L6845] return ((struct urb *)arbitrary_memory); VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6079] urb = usb_alloc_urb(0, 32U) [L6081] COND FALSE !(! urb) [L6089] EXPR dev->udev [L6773] void *arbitrary_memory ; [L6774] void *tmp___7 ; VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6777] COND TRUE 1 VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6911] COND FALSE !(__VERIFIER_nondet_bool()) [L6912] return malloc(size); [L6982] return ldv_malloc(0UL); [L6780] tmp___7 = ldv_undefined_pointer() [L6781] arbitrary_memory = tmp___7 VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6783] COND FALSE !(! arbitrary_memory) [L6787] ldv_coherent_state = ldv_coherent_state + 1 [L6788] return (arbitrary_memory); VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6089] tmp___9 = usb_alloc_coherent(dev->udev, size, 32U, & urb->transfer_dma) [L6090] buf = (u8 *)tmp___9 VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6092] COND FALSE !(! buf) [L6100] msg = (struct ems_cpc_msg *)(buf + 4) [L6101] EXPR cf->can_id [L6101] msg->msg.can_msg.id = cf->can_id & 536870911U [L6102] EXPR cf->can_dlc [L6102] msg->msg.can_msg.length = cf->can_dlc [L6103] EXPR cf->can_id VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6103] COND TRUE cf->can_id & 1073741824U [L6104] EXPR cf->can_id VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6104] COND TRUE cf->can_id & 2147483648U [L6105] msg->type = (u8 )16 VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6109] msg->length = (u8 )5 VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6132] EXPR msg->msg.can_msg.id [L6132] msg->msg.can_msg.id = msg->msg.can_msg.id [L6133] i = 0 VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6135] COND TRUE 1 VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6137] COND TRUE i < 10 VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6141] EXPR dev->tx_contexts[i].echo_index VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6141] COND TRUE dev->tx_contexts[i].echo_index == 10U [L6142] context = & dev->tx_contexts[i] VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6151] COND TRUE ! context [L6154] dev->udev [L6154] urb->transfer_dma [L6802] COND TRUE 1 VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6804] COND FALSE !(! ((unsigned long )addr != (unsigned long )((void *)0))) VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6810] COND TRUE \read(*addr) VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6811] COND TRUE ldv_coherent_state >= 1 VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=1, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6817] ldv_coherent_state = ldv_coherent_state - 1 VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6155] netdev->dev.parent [L6157] return ((netdev_tx_t )16); VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6641] COND TRUE 1 VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6644] tmp___9 = __VERIFIER_nondet_int() [L6646] COND FALSE !(\read(tmp___9)) VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6648] COND FALSE !(! (ldv_s_ems_usb_netdev_ops_net_device_ops == 0)) VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6650] COND FALSE !(! (ldv_s_ems_usb_driver_usb_driver == 0)) VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6889] COND FALSE !(ldv_urb_state == 0) VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] [L6754] reach_error() VAL [__key___7={107:0}, __key___8={129:0}, __this_module={18446744073709551617:18446744073709551622}, ems_usb_bittiming_const={81:0}, ems_usb_driver={89:0}, ems_usb_netdev_ops={135:0}, ems_usb_table={90:0}, ldv_coherent_state=0, LDV_IN_INTERRUPT=1, ldv_urb_state=1, res_ems_usb_close_12=0, res_ems_usb_open_10=0, res_ems_usb_probe_16=0] - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 6754]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 410 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 67305.18ms, OverallIterations: 29, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 41.64ms, AutomataDifference: 47967.70ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 15.23ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45321 SdHoareTripleChecker+Valid, 5263.56ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 45321 mSDsluCounter, 93134 SdHoareTripleChecker+Invalid, 4700.78ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 63896 mSDsCounter, 328 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3035 IncrementalHoareTripleChecker+Invalid, 3363 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 328 mSolverCounterUnsat, 29238 mSDtfsCounter, 3035 mSolverCounterSat, 144.11ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 551 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2942 ImplicationChecksByTransitivity, 1889.04ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8814occurred in iteration=23, InterpolantAutomatonStates: 329, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 15588.49ms AutomataMinimizationTime, 28 MinimizatonAttempts, 211860 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 156.12ms SsaConstructionTime, 1053.27ms SatisfiabilityAnalysisTime, 1553.94ms InterpolantComputationTime, 1499 NumberOfCodeBlocks, 1499 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 1466 ConstructedInterpolants, 0 QuantifiedInterpolants, 2274 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1122 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 30 InterpolantComputations, 27 PerfectInterpolantSequences, 35/41 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-05 14:03:13,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 14:03:15,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 14:03:15,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 14:03:15,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 14:03:15,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 14:03:15,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 14:03:15,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 14:03:15,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 14:03:15,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 14:03:15,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 14:03:15,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 14:03:15,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 14:03:15,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 14:03:15,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 14:03:15,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 14:03:15,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 14:03:15,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 14:03:15,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 14:03:15,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 14:03:15,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 14:03:15,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 14:03:15,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 14:03:15,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 14:03:15,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 14:03:15,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 14:03:15,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 14:03:15,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 14:03:15,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 14:03:15,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 14:03:15,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 14:03:15,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 14:03:15,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 14:03:15,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 14:03:15,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 14:03:15,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 14:03:15,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 14:03:15,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 14:03:15,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 14:03:15,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 14:03:15,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 14:03:15,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 14:03:15,273 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-05 14:03:15,299 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 14:03:15,300 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 14:03:15,301 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 14:03:15,301 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 14:03:15,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 14:03:15,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 14:03:15,303 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 14:03:15,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 14:03:15,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 14:03:15,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 14:03:15,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 14:03:15,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 14:03:15,304 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-05 14:03:15,305 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-05 14:03:15,305 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 14:03:15,305 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 14:03:15,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 14:03:15,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 14:03:15,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 14:03:15,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 14:03:15,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 14:03:15,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 14:03:15,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 14:03:15,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 14:03:15,306 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-05 14:03:15,306 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-05 14:03:15,307 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 14:03:15,307 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 14:03:15,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 14:03:15,307 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 14:03:15,307 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-05 14:03:15,307 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a [2021-11-05 14:03:15,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 14:03:15,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 14:03:15,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 14:03:15,554 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 14:03:15,554 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 14:03:15,555 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-05 14:03:15,600 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e1a62799/d9b74d31e6ea449886265c58e8ece4e7/FLAG9d4c5192c [2021-11-05 14:03:16,172 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 14:03:16,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-05 14:03:16,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e1a62799/d9b74d31e6ea449886265c58e8ece4e7/FLAG9d4c5192c [2021-11-05 14:03:16,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e1a62799/d9b74d31e6ea449886265c58e8ece4e7 [2021-11-05 14:03:16,639 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 14:03:16,641 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 14:03:16,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 14:03:16,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 14:03:16,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 14:03:16,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:03:16" (1/1) ... [2021-11-05 14:03:16,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@141e59d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:16, skipping insertion in model container [2021-11-05 14:03:16,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 02:03:16" (1/1) ... [2021-11-05 14:03:16,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 14:03:16,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 14:03:17,353 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-05 14:03:17,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 14:03:17,390 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 14:03:17,580 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i[191320,191333] [2021-11-05 14:03:17,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 14:03:17,768 INFO L208 MainTranslator]: Completed translation [2021-11-05 14:03:17,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17 WrapperNode [2021-11-05 14:03:17,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 14:03:17,771 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 14:03:17,771 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 14:03:17,771 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 14:03:17,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (1/1) ... [2021-11-05 14:03:17,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (1/1) ... [2021-11-05 14:03:17,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 14:03:17,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 14:03:17,883 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 14:03:17,883 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 14:03:17,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (1/1) ... [2021-11-05 14:03:17,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (1/1) ... [2021-11-05 14:03:17,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (1/1) ... [2021-11-05 14:03:17,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (1/1) ... [2021-11-05 14:03:17,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (1/1) ... [2021-11-05 14:03:17,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (1/1) ... [2021-11-05 14:03:17,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (1/1) ... [2021-11-05 14:03:17,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 14:03:17,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 14:03:17,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 14:03:17,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 14:03:17,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (1/1) ... [2021-11-05 14:03:17,990 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 14:03:17,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 14:03:18,034 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) [2021-11-05 14:03:18,070 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 [2021-11-05 14:03:18,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-05 14:03:18,087 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-05 14:03:18,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-05 14:03:18,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 14:03:18,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 14:03:18,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-05 14:03:18,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-05 14:03:18,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-05 14:03:18,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-05 14:03:18,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 14:03:18,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 14:03:18,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 14:03:18,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-05 14:03:18,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-05 14:03:18,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-05 14:03:18,089 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 14:03:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-05 14:03:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-05 14:03:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 14:03:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-05 14:03:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 14:03:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-05 14:03:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-05 14:03:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-05 14:03:18,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-05 14:03:18,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-05 14:03:18,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 14:03:18,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 14:03:18,511 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-05 14:03:33,389 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume !false; [2021-11-05 14:03:33,389 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume false; [2021-11-05 14:03:33,402 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 14:03:33,403 INFO L299 CfgBuilder]: Removed 434 assume(true) statements. [2021-11-05 14:03:33,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:03:33 BoogieIcfgContainer [2021-11-05 14:03:33,406 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 14:03:33,407 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 14:03:33,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 14:03:33,409 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 14:03:33,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 02:03:16" (1/3) ... [2021-11-05 14:03:33,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485cd359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:03:33, skipping insertion in model container [2021-11-05 14:03:33,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 02:03:17" (2/3) ... [2021-11-05 14:03:33,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485cd359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 02:03:33, skipping insertion in model container [2021-11-05 14:03:33,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 02:03:33" (3/3) ... [2021-11-05 14:03:33,411 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-05 14:03:33,414 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 14:03:33,414 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-05 14:03:33,443 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 14:03:33,447 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 [2021-11-05 14:03:33,447 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-05 14:03:33,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 410 states, 398 states have (on average 1.5025125628140703) internal successors, (598), 409 states have internal predecessors, (598), 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) [2021-11-05 14:03:33,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-05 14:03:33,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:33,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:03:33,464 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:03:33,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:33,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1465825715, now seen corresponding path program 1 times [2021-11-05 14:03:33,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 14:03:33,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87801253] [2021-11-05 14:03:33,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:33,477 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 14:03:33,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 14:03:33,479 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 14:03:33,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-05 14:03:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:33,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 14:03:33,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:03:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:34,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:03:34,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:34,231 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 14:03:34,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87801253] [2021-11-05 14:03:34,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87801253] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:34,231 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:34,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-05 14:03:34,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580985724] [2021-11-05 14:03:34,233 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:34,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 14:03:34,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 14:03:34,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 14:03:34,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 14:03:34,254 INFO L87 Difference]: Start difference. First operand has 410 states, 398 states have (on average 1.5025125628140703) internal successors, (598), 409 states have internal predecessors, (598), 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) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-05 14:03:34,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:34,543 INFO L93 Difference]: Finished difference Result 1189 states and 1749 transitions. [2021-11-05 14:03:34,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 14:03:34,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) Word has length 10 [2021-11-05 14:03:34,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:34,557 INFO L225 Difference]: With dead ends: 1189 [2021-11-05 14:03:34,557 INFO L226 Difference]: Without dead ends: 765 [2021-11-05 14:03:34,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 14:03:34,562 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 503 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 189.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.83ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 218.60ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:34,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 1007 Invalid, 39 Unknown, 0 Unchecked, 6.83ms Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 218.60ms Time] [2021-11-05 14:03:34,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2021-11-05 14:03:34,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 747. [2021-11-05 14:03:34,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 736 states have (on average 1.327445652173913) internal successors, (977), 746 states have internal predecessors, (977), 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) [2021-11-05 14:03:34,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 977 transitions. [2021-11-05 14:03:34,657 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 977 transitions. Word has length 10 [2021-11-05 14:03:34,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:34,657 INFO L470 AbstractCegarLoop]: Abstraction has 747 states and 977 transitions. [2021-11-05 14:03:34,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) [2021-11-05 14:03:34,658 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 977 transitions. [2021-11-05 14:03:34,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-05 14:03:34,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:34,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:03:34,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-05 14:03:34,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 14:03:34,878 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:03:34,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:34,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1804042980, now seen corresponding path program 1 times [2021-11-05 14:03:34,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 14:03:34,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243973639] [2021-11-05 14:03:34,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:34,879 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 14:03:34,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 14:03:34,882 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 14:03:34,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-05 14:03:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:35,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 14:03:35,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:03:35,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:35,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:03:35,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:35,531 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 14:03:35,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243973639] [2021-11-05 14:03:35,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243973639] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:35,532 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:35,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-05 14:03:35,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786512432] [2021-11-05 14:03:35,532 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:35,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 14:03:35,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 14:03:35,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 14:03:35,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 14:03:35,534 INFO L87 Difference]: Start difference. First operand 747 states and 977 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-11-05 14:03:35,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:35,721 INFO L93 Difference]: Finished difference Result 2217 states and 2904 transitions. [2021-11-05 14:03:35,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 14:03:35,722 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) Word has length 11 [2021-11-05 14:03:35,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:35,727 INFO L225 Difference]: With dead ends: 2217 [2021-11-05 14:03:35,727 INFO L226 Difference]: Without dead ends: 1475 [2021-11-05 14:03:35,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.19ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 14:03:35,731 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 487 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.46ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 136.54ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:35,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 985 Invalid, 20 Unknown, 0 Unchecked, 3.46ms Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 136.54ms Time] [2021-11-05 14:03:35,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2021-11-05 14:03:35,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1446. [2021-11-05 14:03:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1435 states have (on average 1.3261324041811846) internal successors, (1903), 1445 states have internal predecessors, (1903), 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) [2021-11-05 14:03:35,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 1903 transitions. [2021-11-05 14:03:35,779 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 1903 transitions. Word has length 11 [2021-11-05 14:03:35,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:35,780 INFO L470 AbstractCegarLoop]: Abstraction has 1446 states and 1903 transitions. [2021-11-05 14:03:35,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-11-05 14:03:35,780 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 1903 transitions. [2021-11-05 14:03:35,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-05 14:03:35,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:35,784 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] [2021-11-05 14:03:35,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-05 14:03:36,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 14:03:36,002 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:03:36,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:36,003 INFO L85 PathProgramCache]: Analyzing trace with hash 739890622, now seen corresponding path program 1 times [2021-11-05 14:03:36,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 14:03:36,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296234435] [2021-11-05 14:03:36,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:36,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 14:03:36,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 14:03:36,006 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 14:03:36,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-05 14:03:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:36,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-05 14:03:36,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:03:36,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:36,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:03:36,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:36,959 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 14:03:36,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1296234435] [2021-11-05 14:03:36,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1296234435] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:36,959 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:36,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-05 14:03:36,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443936631] [2021-11-05 14:03:36,960 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:36,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:03:36,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 14:03:36,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:03:36,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:03:36,961 INFO L87 Difference]: Start difference. First operand 1446 states and 1903 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2021-11-05 14:03:37,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:37,107 INFO L93 Difference]: Finished difference Result 2886 states and 3799 transitions. [2021-11-05 14:03:37,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 14:03:37,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) Word has length 38 [2021-11-05 14:03:37,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:37,112 INFO L225 Difference]: With dead ends: 2886 [2021-11-05 14:03:37,112 INFO L226 Difference]: Without dead ends: 1446 [2021-11-05 14:03:37,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 100.22ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:03:37,115 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 1 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.90ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.68ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:37,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1507 Invalid, 7 Unknown, 0 Unchecked, 1.90ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 44.68ms Time] [2021-11-05 14:03:37,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-11-05 14:03:37,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1446. [2021-11-05 14:03:37,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1435 states have (on average 1.3254355400696864) internal successors, (1902), 1445 states have internal predecessors, (1902), 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) [2021-11-05 14:03:37,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 1902 transitions. [2021-11-05 14:03:37,148 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 1902 transitions. Word has length 38 [2021-11-05 14:03:37,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:37,148 INFO L470 AbstractCegarLoop]: Abstraction has 1446 states and 1902 transitions. [2021-11-05 14:03:37,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 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) [2021-11-05 14:03:37,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 1902 transitions. [2021-11-05 14:03:37,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-05 14:03:37,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:37,150 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] [2021-11-05 14:03:37,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-05 14:03:37,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 14:03:37,368 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:03:37,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:37,368 INFO L85 PathProgramCache]: Analyzing trace with hash 667504064, now seen corresponding path program 1 times [2021-11-05 14:03:37,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 14:03:37,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975294042] [2021-11-05 14:03:37,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:37,369 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 14:03:37,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 14:03:37,370 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 14:03:37,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-05 14:03:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:37,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 14:03:37,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:03:38,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:38,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:03:38,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:38,327 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 14:03:38,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975294042] [2021-11-05 14:03:38,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [975294042] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:38,327 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:38,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-05 14:03:38,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260180485] [2021-11-05 14:03:38,327 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:38,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:03:38,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 14:03:38,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:03:38,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:03:38,328 INFO L87 Difference]: Start difference. First operand 1446 states and 1902 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2021-11-05 14:03:38,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:38,519 INFO L93 Difference]: Finished difference Result 4964 states and 6618 transitions. [2021-11-05 14:03:38,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 14:03:38,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) Word has length 38 [2021-11-05 14:03:38,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:38,529 INFO L225 Difference]: With dead ends: 4964 [2021-11-05 14:03:38,529 INFO L226 Difference]: Without dead ends: 3525 [2021-11-05 14:03:38,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.77ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:03:38,532 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 1264 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.24ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97.85ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:38,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1264 Valid, 1265 Invalid, 24 Unknown, 0 Unchecked, 3.24ms Time], IncrementalHoareTripleChecker [9 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 97.85ms Time] [2021-11-05 14:03:38,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2021-11-05 14:03:38,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 3461. [2021-11-05 14:03:38,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3461 states, 3450 states have (on average 1.3504347826086958) internal successors, (4659), 3460 states have internal predecessors, (4659), 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) [2021-11-05 14:03:38,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3461 states to 3461 states and 4659 transitions. [2021-11-05 14:03:38,617 INFO L78 Accepts]: Start accepts. Automaton has 3461 states and 4659 transitions. Word has length 38 [2021-11-05 14:03:38,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:38,617 INFO L470 AbstractCegarLoop]: Abstraction has 3461 states and 4659 transitions. [2021-11-05 14:03:38,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2021-11-05 14:03:38,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3461 states and 4659 transitions. [2021-11-05 14:03:38,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-05 14:03:38,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:38,625 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] [2021-11-05 14:03:38,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-05 14:03:38,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 14:03:38,839 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:03:38,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:38,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1703756643, now seen corresponding path program 1 times [2021-11-05 14:03:38,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 14:03:38,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203187013] [2021-11-05 14:03:38,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:38,841 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 14:03:38,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 14:03:38,842 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 14:03:38,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-05 14:03:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:39,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 14:03:39,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:03:39,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:39,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:03:39,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:39,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 14:03:39,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203187013] [2021-11-05 14:03:39,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203187013] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:39,709 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:39,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-05 14:03:39,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507484392] [2021-11-05 14:03:39,709 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:39,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 14:03:39,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 14:03:39,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 14:03:39,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 14:03:39,711 INFO L87 Difference]: Start difference. First operand 3461 states and 4659 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2021-11-05 14:03:40,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:40,112 INFO L93 Difference]: Finished difference Result 13736 states and 18468 transitions. [2021-11-05 14:03:40,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 14:03:40,114 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) Word has length 41 [2021-11-05 14:03:40,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:40,144 INFO L225 Difference]: With dead ends: 13736 [2021-11-05 14:03:40,144 INFO L226 Difference]: Without dead ends: 10283 [2021-11-05 14:03:40,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 178.40ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 14:03:40,152 INFO L933 BasicCegarLoop]: 861 mSDtfsCounter, 2446 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2446 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.06ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.94ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:40,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2446 Valid, 2834 Invalid, 14 Unknown, 0 Unchecked, 6.06ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 79.94ms Time] [2021-11-05 14:03:40,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10283 states. [2021-11-05 14:03:40,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10283 to 3485. [2021-11-05 14:03:40,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3485 states, 3474 states have (on average 1.348013816925734) internal successors, (4683), 3484 states have internal predecessors, (4683), 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) [2021-11-05 14:03:40,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3485 states to 3485 states and 4683 transitions. [2021-11-05 14:03:40,340 INFO L78 Accepts]: Start accepts. Automaton has 3485 states and 4683 transitions. Word has length 41 [2021-11-05 14:03:40,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:40,340 INFO L470 AbstractCegarLoop]: Abstraction has 3485 states and 4683 transitions. [2021-11-05 14:03:40,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2021-11-05 14:03:40,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3485 states and 4683 transitions. [2021-11-05 14:03:40,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-05 14:03:40,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:40,342 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] [2021-11-05 14:03:40,358 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-05 14:03:40,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 14:03:40,570 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:03:40,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:40,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1337408933, now seen corresponding path program 1 times [2021-11-05 14:03:40,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 14:03:40,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119363153] [2021-11-05 14:03:40,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:40,572 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 14:03:40,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 14:03:40,574 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 14:03:40,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-05 14:03:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:40,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 14:03:40,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:03:41,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:41,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:03:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:41,418 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 14:03:41,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119363153] [2021-11-05 14:03:41,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119363153] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:41,418 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:41,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-05 14:03:41,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963094219] [2021-11-05 14:03:41,418 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:41,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 14:03:41,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 14:03:41,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 14:03:41,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 14:03:41,420 INFO L87 Difference]: Start difference. First operand 3485 states and 4683 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2021-11-05 14:03:41,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:41,894 INFO L93 Difference]: Finished difference Result 11840 states and 15908 transitions. [2021-11-05 14:03:41,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 14:03:41,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) Word has length 42 [2021-11-05 14:03:41,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:41,919 INFO L225 Difference]: With dead ends: 11840 [2021-11-05 14:03:41,920 INFO L226 Difference]: Without dead ends: 8363 [2021-11-05 14:03:41,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 169.91ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 14:03:41,926 INFO L933 BasicCegarLoop]: 872 mSDtfsCounter, 1481 mSDsluCounter, 2608 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 109.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 3480 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.55ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116.37ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:41,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1481 Valid, 3480 Invalid, 16 Unknown, 0 Unchecked, 4.55ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 116.37ms Time] [2021-11-05 14:03:41,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8363 states. [2021-11-05 14:03:42,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8363 to 3509. [2021-11-05 14:03:42,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3509 states, 3498 states have (on average 1.3456260720411664) internal successors, (4707), 3508 states have internal predecessors, (4707), 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) [2021-11-05 14:03:42,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 4707 transitions. [2021-11-05 14:03:42,118 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 4707 transitions. Word has length 42 [2021-11-05 14:03:42,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:42,118 INFO L470 AbstractCegarLoop]: Abstraction has 3509 states and 4707 transitions. [2021-11-05 14:03:42,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 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) [2021-11-05 14:03:42,119 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 4707 transitions. [2021-11-05 14:03:42,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-05 14:03:42,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:42,120 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] [2021-11-05 14:03:42,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-05 14:03:42,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 14:03:42,344 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:03:42,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:42,345 INFO L85 PathProgramCache]: Analyzing trace with hash -283318246, now seen corresponding path program 1 times [2021-11-05 14:03:42,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 14:03:42,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791899871] [2021-11-05 14:03:42,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:42,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 14:03:42,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 14:03:42,347 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 14:03:42,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-05 14:03:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:42,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 14:03:42,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:03:43,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:43,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:03:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:43,253 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 14:03:43,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791899871] [2021-11-05 14:03:43,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791899871] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:43,253 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:43,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-05 14:03:43,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104692475] [2021-11-05 14:03:43,254 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:43,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 14:03:43,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 14:03:43,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 14:03:43,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:03:43,254 INFO L87 Difference]: Start difference. First operand 3509 states and 4707 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2021-11-05 14:03:45,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:45,139 INFO L93 Difference]: Finished difference Result 19088 states and 25593 transitions. [2021-11-05 14:03:45,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 14:03:45,140 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) Word has length 42 [2021-11-05 14:03:45,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:45,178 INFO L225 Difference]: With dead ends: 19088 [2021-11-05 14:03:45,179 INFO L226 Difference]: Without dead ends: 17298 [2021-11-05 14:03:45,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 478.15ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 14:03:45,185 INFO L933 BasicCegarLoop]: 1055 mSDtfsCounter, 3034 mSDsluCounter, 3154 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 720.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3034 SdHoareTripleChecker+Valid, 4209 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.22ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 812.02ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:45,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3034 Valid, 4209 Invalid, 144 Unknown, 0 Unchecked, 7.22ms Time], IncrementalHoareTripleChecker [25 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 812.02ms Time] [2021-11-05 14:03:45,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17298 states. [2021-11-05 14:03:45,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17298 to 3593. [2021-11-05 14:03:45,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3593 states, 3582 states have (on average 1.3375209380234505) internal successors, (4791), 3592 states have internal predecessors, (4791), 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) [2021-11-05 14:03:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 4791 transitions. [2021-11-05 14:03:45,488 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 4791 transitions. Word has length 42 [2021-11-05 14:03:45,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:45,489 INFO L470 AbstractCegarLoop]: Abstraction has 3593 states and 4791 transitions. [2021-11-05 14:03:45,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2021-11-05 14:03:45,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 4791 transitions. [2021-11-05 14:03:45,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-05 14:03:45,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:45,491 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] [2021-11-05 14:03:45,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-05 14:03:45,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 14:03:45,704 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:03:45,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:45,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1871666148, now seen corresponding path program 1 times [2021-11-05 14:03:45,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 14:03:45,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612898861] [2021-11-05 14:03:45,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:45,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 14:03:45,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 14:03:45,707 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 14:03:45,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-05 14:03:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:46,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 14:03:46,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:03:46,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:46,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:03:46,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:46,594 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 14:03:46,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612898861] [2021-11-05 14:03:46,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612898861] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:46,594 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:46,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-05 14:03:46,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23096126] [2021-11-05 14:03:46,595 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:46,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 14:03:46,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 14:03:46,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 14:03:46,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 14:03:46,596 INFO L87 Difference]: Start difference. First operand 3593 states and 4791 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-11-05 14:03:53,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:53,504 INFO L93 Difference]: Finished difference Result 27795 states and 37313 transitions. [2021-11-05 14:03:53,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-05 14:03:53,512 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) Word has length 42 [2021-11-05 14:03:53,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:53,554 INFO L225 Difference]: With dead ends: 27795 [2021-11-05 14:03:53,555 INFO L226 Difference]: Without dead ends: 24210 [2021-11-05 14:03:53,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1184.67ms TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-05 14:03:53,564 INFO L933 BasicCegarLoop]: 2469 mSDtfsCounter, 4259 mSDsluCounter, 8564 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4139.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4259 SdHoareTripleChecker+Valid, 11033 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.59ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4340.69ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:53,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4259 Valid, 11033 Invalid, 396 Unknown, 0 Unchecked, 12.59ms Time], IncrementalHoareTripleChecker [21 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 4340.69ms Time] [2021-11-05 14:03:53,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24210 states. [2021-11-05 14:03:53,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24210 to 3563. [2021-11-05 14:03:53,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3563 states, 3552 states have (on average 1.3324887387387387) internal successors, (4733), 3562 states have internal predecessors, (4733), 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) [2021-11-05 14:03:53,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3563 states to 3563 states and 4733 transitions. [2021-11-05 14:03:53,968 INFO L78 Accepts]: Start accepts. Automaton has 3563 states and 4733 transitions. Word has length 42 [2021-11-05 14:03:53,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:53,969 INFO L470 AbstractCegarLoop]: Abstraction has 3563 states and 4733 transitions. [2021-11-05 14:03:53,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-11-05 14:03:53,969 INFO L276 IsEmpty]: Start isEmpty. Operand 3563 states and 4733 transitions. [2021-11-05 14:03:53,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-05 14:03:53,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:53,970 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] [2021-11-05 14:03:53,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-05 14:03:54,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 14:03:54,192 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:03:54,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:54,192 INFO L85 PathProgramCache]: Analyzing trace with hash 567062686, now seen corresponding path program 1 times [2021-11-05 14:03:54,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 14:03:54,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175250548] [2021-11-05 14:03:54,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:54,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 14:03:54,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 14:03:54,194 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 14:03:54,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-05 14:03:54,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:54,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-05 14:03:54,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:03:54,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:54,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:03:55,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:55,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 14:03:55,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175250548] [2021-11-05 14:03:55,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175250548] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:55,016 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:55,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-05 14:03:55,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175582960] [2021-11-05 14:03:55,016 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:55,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:03:55,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 14:03:55,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:03:55,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:03:55,017 INFO L87 Difference]: Start difference. First operand 3563 states and 4733 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-11-05 14:03:56,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:03:56,469 INFO L93 Difference]: Finished difference Result 12089 states and 16109 transitions. [2021-11-05 14:03:56,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 14:03:56,471 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) Word has length 44 [2021-11-05 14:03:56,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:03:56,485 INFO L225 Difference]: With dead ends: 12089 [2021-11-05 14:03:56,485 INFO L226 Difference]: Without dead ends: 8534 [2021-11-05 14:03:56,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 167.27ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:03:56,490 INFO L933 BasicCegarLoop]: 1025 mSDtfsCounter, 1250 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 655.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.78ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 693.45ms IncrementalHoareTripleChecker+Time [2021-11-05 14:03:56,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1250 Valid, 2683 Invalid, 39 Unknown, 0 Unchecked, 2.78ms Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 693.45ms Time] [2021-11-05 14:03:56,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8534 states. [2021-11-05 14:03:56,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8534 to 3171. [2021-11-05 14:03:56,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3171 states, 3160 states have (on average 1.32626582278481) internal successors, (4191), 3170 states have internal predecessors, (4191), 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) [2021-11-05 14:03:56,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 4191 transitions. [2021-11-05 14:03:56,797 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 4191 transitions. Word has length 44 [2021-11-05 14:03:56,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:03:56,797 INFO L470 AbstractCegarLoop]: Abstraction has 3171 states and 4191 transitions. [2021-11-05 14:03:56,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2021-11-05 14:03:56,798 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 4191 transitions. [2021-11-05 14:03:56,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-05 14:03:56,798 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:03:56,798 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] [2021-11-05 14:03:56,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-05 14:03:57,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 14:03:57,012 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:03:57,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:03:57,012 INFO L85 PathProgramCache]: Analyzing trace with hash -2142949410, now seen corresponding path program 1 times [2021-11-05 14:03:57,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 14:03:57,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866311505] [2021-11-05 14:03:57,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:03:57,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 14:03:57,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 14:03:57,018 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 14:03:57,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-05 14:03:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:03:57,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 14:03:57,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:03:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:57,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:03:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:03:58,549 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 14:03:58,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866311505] [2021-11-05 14:03:58,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866311505] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 14:03:58,549 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:03:58,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-05 14:03:58,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187400376] [2021-11-05 14:03:58,550 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 14:03:58,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 14:03:58,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 14:03:58,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 14:03:58,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-05 14:03:58,550 INFO L87 Difference]: Start difference. First operand 3171 states and 4191 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 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) [2021-11-05 14:04:00,611 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 14:04:02,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:04:02,382 INFO L93 Difference]: Finished difference Result 13252 states and 17567 transitions. [2021-11-05 14:04:02,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 14:04:02,383 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 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) Word has length 44 [2021-11-05 14:04:02,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:04:02,400 INFO L225 Difference]: With dead ends: 13252 [2021-11-05 14:04:02,400 INFO L226 Difference]: Without dead ends: 11405 [2021-11-05 14:04:02,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 195.97ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 14:04:02,411 INFO L933 BasicCegarLoop]: 854 mSDtfsCounter, 3458 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 74 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2617.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3458 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.65ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2693.73ms IncrementalHoareTripleChecker+Time [2021-11-05 14:04:02,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3458 Valid, 2741 Invalid, 167 Unknown, 0 Unchecked, 4.65ms Time], IncrementalHoareTripleChecker [74 Valid, 92 Invalid, 1 Unknown, 0 Unchecked, 2693.73ms Time] [2021-11-05 14:04:02,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11405 states. [2021-11-05 14:04:03,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11405 to 9847. [2021-11-05 14:04:03,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9847 states, 9836 states have (on average 1.324623830825539) internal successors, (13029), 9846 states have internal predecessors, (13029), 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) [2021-11-05 14:04:03,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9847 states to 9847 states and 13029 transitions. [2021-11-05 14:04:03,340 INFO L78 Accepts]: Start accepts. Automaton has 9847 states and 13029 transitions. Word has length 44 [2021-11-05 14:04:03,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:04:03,341 INFO L470 AbstractCegarLoop]: Abstraction has 9847 states and 13029 transitions. [2021-11-05 14:04:03,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 5 states have internal predecessors, (87), 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) [2021-11-05 14:04:03,341 INFO L276 IsEmpty]: Start isEmpty. Operand 9847 states and 13029 transitions. [2021-11-05 14:04:03,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-05 14:04:03,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:04:03,342 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] [2021-11-05 14:04:03,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-05 14:04:03,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 14:04:03,547 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:04:03,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:04:03,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1537453454, now seen corresponding path program 1 times [2021-11-05 14:04:03,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 14:04:03,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635440638] [2021-11-05 14:04:03,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:04:03,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 14:04:03,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 14:04:03,549 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 14:04:03,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-05 14:04:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:04:03,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 14:04:03,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:04:04,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:04:04,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:04:04,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:04:04,436 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 14:04:04,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635440638] [2021-11-05 14:04:04,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635440638] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 14:04:04,436 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:04:04,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-05 14:04:04,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98795179] [2021-11-05 14:04:04,436 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 14:04:04,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:04:04,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 14:04:04,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:04:04,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:04:04,437 INFO L87 Difference]: Start difference. First operand 9847 states and 13029 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2021-11-05 14:04:05,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:04:05,861 INFO L93 Difference]: Finished difference Result 20142 states and 26962 transitions. [2021-11-05 14:04:05,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 14:04:05,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) Word has length 47 [2021-11-05 14:04:05,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:04:05,874 INFO L225 Difference]: With dead ends: 20142 [2021-11-05 14:04:05,874 INFO L226 Difference]: Without dead ends: 10303 [2021-11-05 14:04:05,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.27ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:04:05,884 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 0 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 261.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.19ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 303.18ms IncrementalHoareTripleChecker+Time [2021-11-05 14:04:05,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1463 Invalid, 60 Unknown, 0 Unchecked, 1.19ms Time], IncrementalHoareTripleChecker [25 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 303.18ms Time] [2021-11-05 14:04:05,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10303 states. [2021-11-05 14:04:06,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10303 to 10303. [2021-11-05 14:04:06,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10303 states, 10292 states have (on average 1.3102409638554218) internal successors, (13485), 10302 states have internal predecessors, (13485), 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) [2021-11-05 14:04:06,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10303 states to 10303 states and 13485 transitions. [2021-11-05 14:04:06,929 INFO L78 Accepts]: Start accepts. Automaton has 10303 states and 13485 transitions. Word has length 47 [2021-11-05 14:04:06,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:04:06,929 INFO L470 AbstractCegarLoop]: Abstraction has 10303 states and 13485 transitions. [2021-11-05 14:04:06,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2021-11-05 14:04:06,929 INFO L276 IsEmpty]: Start isEmpty. Operand 10303 states and 13485 transitions. [2021-11-05 14:04:06,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-05 14:04:06,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:04:06,930 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] [2021-11-05 14:04:06,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-05 14:04:07,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 14:04:07,131 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:04:07,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:04:07,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1909705166, now seen corresponding path program 1 times [2021-11-05 14:04:07,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 14:04:07,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076388372] [2021-11-05 14:04:07,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:04:07,133 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 14:04:07,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 14:04:07,134 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 14:04:07,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-05 14:04:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:04:07,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-05 14:04:07,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:04:07,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:04:07,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:04:08,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:04:08,488 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 14:04:08,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076388372] [2021-11-05 14:04:08,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076388372] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-05 14:04:08,488 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-05 14:04:08,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-05 14:04:08,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993060384] [2021-11-05 14:04:08,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-05 14:04:08,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 14:04:08,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 14:04:08,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 14:04:08,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-05 14:04:08,489 INFO L87 Difference]: Start difference. First operand 10303 states and 13485 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) [2021-11-05 14:04:10,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:04:10,612 INFO L93 Difference]: Finished difference Result 21054 states and 27874 transitions. [2021-11-05 14:04:10,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 14:04:10,613 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) Word has length 49 [2021-11-05 14:04:10,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:04:10,626 INFO L225 Difference]: With dead ends: 21054 [2021-11-05 14:04:10,626 INFO L226 Difference]: Without dead ends: 10759 [2021-11-05 14:04:10,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 442.64ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-05 14:04:10,637 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 0 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 840.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2429 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.14ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 953.33ms IncrementalHoareTripleChecker+Time [2021-11-05 14:04:10,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2429 Invalid, 176 Unknown, 0 Unchecked, 2.14ms Time], IncrementalHoareTripleChecker [57 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 953.33ms Time] [2021-11-05 14:04:10,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10759 states. [2021-11-05 14:04:11,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10759 to 10759. [2021-11-05 14:04:11,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10759 states, 10748 states have (on average 1.2970785262374396) internal successors, (13941), 10758 states have internal predecessors, (13941), 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) [2021-11-05 14:04:11,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10759 states to 10759 states and 13941 transitions. [2021-11-05 14:04:11,711 INFO L78 Accepts]: Start accepts. Automaton has 10759 states and 13941 transitions. Word has length 49 [2021-11-05 14:04:11,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:04:11,711 INFO L470 AbstractCegarLoop]: Abstraction has 10759 states and 13941 transitions. [2021-11-05 14:04:11,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) [2021-11-05 14:04:11,712 INFO L276 IsEmpty]: Start isEmpty. Operand 10759 states and 13941 transitions. [2021-11-05 14:04:11,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-05 14:04:11,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:04:11,713 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:04:11,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-05 14:04:11,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 14:04:11,927 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:04:11,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:04:11,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1133652466, now seen corresponding path program 2 times [2021-11-05 14:04:11,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 14:04:11,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906205921] [2021-11-05 14:04:11,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-05 14:04:11,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 14:04:11,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 14:04:11,930 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 14:04:11,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-05 14:04:12,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-05 14:04:12,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-05 14:04:12,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 14:04:12,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:04:12,707 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 14:04:12,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:04:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 14:04:12,856 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 14:04:12,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906205921] [2021-11-05 14:04:12,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906205921] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 14:04:12,856 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:04:12,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-05 14:04:12,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691986499] [2021-11-05 14:04:12,857 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 14:04:12,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 14:04:12,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 14:04:12,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 14:04:12,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 14:04:12,857 INFO L87 Difference]: Start difference. First operand 10759 states and 13941 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2021-11-05 14:04:28,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:04:28,507 INFO L93 Difference]: Finished difference Result 105801 states and 137975 transitions. [2021-11-05 14:04:28,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-05 14:04:28,508 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) Word has length 51 [2021-11-05 14:04:28,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:04:28,661 INFO L225 Difference]: With dead ends: 105801 [2021-11-05 14:04:28,661 INFO L226 Difference]: Without dead ends: 95050 [2021-11-05 14:04:28,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1199.37ms TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-05 14:04:28,693 INFO L933 BasicCegarLoop]: 2316 mSDtfsCounter, 3724 mSDsluCounter, 7541 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3244.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3724 SdHoareTripleChecker+Valid, 9857 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.52ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3450.73ms IncrementalHoareTripleChecker+Time [2021-11-05 14:04:28,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3724 Valid, 9857 Invalid, 370 Unknown, 0 Unchecked, 12.52ms Time], IncrementalHoareTripleChecker [18 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 3450.73ms Time] [2021-11-05 14:04:28,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95050 states. [2021-11-05 14:04:30,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95050 to 10807. [2021-11-05 14:04:30,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10807 states, 10796 states have (on average 1.2957576880326047) internal successors, (13989), 10806 states have internal predecessors, (13989), 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) [2021-11-05 14:04:30,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10807 states to 10807 states and 13989 transitions. [2021-11-05 14:04:30,781 INFO L78 Accepts]: Start accepts. Automaton has 10807 states and 13989 transitions. Word has length 51 [2021-11-05 14:04:30,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:04:30,781 INFO L470 AbstractCegarLoop]: Abstraction has 10807 states and 13989 transitions. [2021-11-05 14:04:30,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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) [2021-11-05 14:04:30,782 INFO L276 IsEmpty]: Start isEmpty. Operand 10807 states and 13989 transitions. [2021-11-05 14:04:30,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-05 14:04:30,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:04:30,787 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] [2021-11-05 14:04:30,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-05 14:04:30,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 14:04:31,000 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:04:31,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:04:31,000 INFO L85 PathProgramCache]: Analyzing trace with hash -61741317, now seen corresponding path program 1 times [2021-11-05 14:04:31,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 14:04:31,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [423490379] [2021-11-05 14:04:31,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:04:31,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 14:04:31,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 14:04:31,002 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 14:04:31,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-05 14:04:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:04:31,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 14:04:31,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:04:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:04:31,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:04:31,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:04:31,806 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 14:04:31,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [423490379] [2021-11-05 14:04:31,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [423490379] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 14:04:31,806 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:04:31,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-05 14:04:31,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398148380] [2021-11-05 14:04:31,806 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 14:04:31,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:04:31,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 14:04:31,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:04:31,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:04:31,807 INFO L87 Difference]: Start difference. First operand 10807 states and 13989 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2021-11-05 14:04:36,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:04:36,979 INFO L93 Difference]: Finished difference Result 41931 states and 54176 transitions. [2021-11-05 14:04:36,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 14:04:36,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) Word has length 52 [2021-11-05 14:04:36,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:04:37,023 INFO L225 Difference]: With dead ends: 41931 [2021-11-05 14:04:37,023 INFO L226 Difference]: Without dead ends: 31132 [2021-11-05 14:04:37,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 154.30ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:04:37,041 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 1354 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 622.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.76ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 653.46ms IncrementalHoareTripleChecker+Time [2021-11-05 14:04:37,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1354 Valid, 2695 Invalid, 25 Unknown, 0 Unchecked, 2.76ms Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 653.46ms Time] [2021-11-05 14:04:37,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31132 states. [2021-11-05 14:04:38,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31132 to 10184. [2021-11-05 14:04:38,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10184 states, 10173 states have (on average 1.2911628821389953) internal successors, (13135), 10183 states have internal predecessors, (13135), 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) [2021-11-05 14:04:38,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10184 states to 10184 states and 13135 transitions. [2021-11-05 14:04:38,874 INFO L78 Accepts]: Start accepts. Automaton has 10184 states and 13135 transitions. Word has length 52 [2021-11-05 14:04:38,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:04:38,875 INFO L470 AbstractCegarLoop]: Abstraction has 10184 states and 13135 transitions. [2021-11-05 14:04:38,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2021-11-05 14:04:38,875 INFO L276 IsEmpty]: Start isEmpty. Operand 10184 states and 13135 transitions. [2021-11-05 14:04:38,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-05 14:04:38,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:04:38,876 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] [2021-11-05 14:04:38,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-05 14:04:39,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 14:04:39,092 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:04:39,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:04:39,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1082809671, now seen corresponding path program 1 times [2021-11-05 14:04:39,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 14:04:39,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129556701] [2021-11-05 14:04:39,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:04:39,094 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 14:04:39,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 14:04:39,095 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 14:04:39,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-05 14:04:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:04:39,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 14:04:39,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:04:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:04:39,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:04:40,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:04:40,107 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 14:04:40,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129556701] [2021-11-05 14:04:40,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129556701] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 14:04:40,108 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:04:40,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-05 14:04:40,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782782468] [2021-11-05 14:04:40,108 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 14:04:40,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 14:04:40,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 14:04:40,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 14:04:40,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:04:40,109 INFO L87 Difference]: Start difference. First operand 10184 states and 13135 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2021-11-05 14:04:52,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:04:52,021 INFO L93 Difference]: Finished difference Result 67888 states and 87963 transitions. [2021-11-05 14:04:52,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 14:04:52,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) Word has length 52 [2021-11-05 14:04:52,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:04:52,122 INFO L225 Difference]: With dead ends: 67888 [2021-11-05 14:04:52,122 INFO L226 Difference]: Without dead ends: 62406 [2021-11-05 14:04:52,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 486.56ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 14:04:52,145 INFO L933 BasicCegarLoop]: 1439 mSDtfsCounter, 1939 mSDsluCounter, 3582 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 994.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1939 SdHoareTripleChecker+Valid, 5021 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.52ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1067.70ms IncrementalHoareTripleChecker+Time [2021-11-05 14:04:52,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1939 Valid, 5021 Invalid, 181 Unknown, 0 Unchecked, 7.52ms Time], IncrementalHoareTripleChecker [16 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 1067.70ms Time] [2021-11-05 14:04:52,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62406 states. [2021-11-05 14:04:54,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62406 to 10364. [2021-11-05 14:04:54,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10364 states, 10353 states have (on average 1.286100647155414) internal successors, (13315), 10363 states have internal predecessors, (13315), 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) [2021-11-05 14:04:54,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10364 states to 10364 states and 13315 transitions. [2021-11-05 14:04:54,348 INFO L78 Accepts]: Start accepts. Automaton has 10364 states and 13315 transitions. Word has length 52 [2021-11-05 14:04:54,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:04:54,349 INFO L470 AbstractCegarLoop]: Abstraction has 10364 states and 13315 transitions. [2021-11-05 14:04:54,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2021-11-05 14:04:54,349 INFO L276 IsEmpty]: Start isEmpty. Operand 10364 states and 13315 transitions. [2021-11-05 14:04:54,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-05 14:04:54,350 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:04:54,350 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] [2021-11-05 14:04:54,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-05 14:04:54,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 14:04:54,556 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:04:54,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:04:54,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1523213883, now seen corresponding path program 1 times [2021-11-05 14:04:54,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 14:04:54,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822245053] [2021-11-05 14:04:54,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:04:54,558 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 14:04:54,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 14:04:54,559 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 14:04:54,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-05 14:04:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:04:54,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 14:04:54,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:04:55,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:04:55,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:04:55,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:04:55,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 14:04:55,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822245053] [2021-11-05 14:04:55,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822245053] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 14:04:55,261 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:04:55,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-05 14:04:55,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487150095] [2021-11-05 14:04:55,261 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 14:04:55,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:04:55,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 14:04:55,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:04:55,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:04:55,262 INFO L87 Difference]: Start difference. First operand 10364 states and 13315 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-11-05 14:04:58,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:04:58,675 INFO L93 Difference]: Finished difference Result 25606 states and 33029 transitions. [2021-11-05 14:04:58,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 14:04:58,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) Word has length 52 [2021-11-05 14:04:58,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:04:58,698 INFO L225 Difference]: With dead ends: 25606 [2021-11-05 14:04:58,699 INFO L226 Difference]: Without dead ends: 20034 [2021-11-05 14:04:58,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.06ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:04:58,705 INFO L933 BasicCegarLoop]: 867 mSDtfsCounter, 1314 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 192.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.30ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 221.33ms IncrementalHoareTripleChecker+Time [2021-11-05 14:04:58,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 1792 Invalid, 29 Unknown, 0 Unchecked, 2.30ms Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 221.33ms Time] [2021-11-05 14:04:58,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20034 states. [2021-11-05 14:05:00,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20034 to 10436. [2021-11-05 14:05:00,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10436 states, 10425 states have (on average 1.2852757793764988) internal successors, (13399), 10435 states have internal predecessors, (13399), 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) [2021-11-05 14:05:00,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10436 states to 10436 states and 13399 transitions. [2021-11-05 14:05:00,497 INFO L78 Accepts]: Start accepts. Automaton has 10436 states and 13399 transitions. Word has length 52 [2021-11-05 14:05:00,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:05:00,497 INFO L470 AbstractCegarLoop]: Abstraction has 10436 states and 13399 transitions. [2021-11-05 14:05:00,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-11-05 14:05:00,498 INFO L276 IsEmpty]: Start isEmpty. Operand 10436 states and 13399 transitions. [2021-11-05 14:05:00,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 14:05:00,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:05:00,499 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:05:00,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-05 14:05:00,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 14:05:00,699 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:05:00,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:05:00,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1066011435, now seen corresponding path program 1 times [2021-11-05 14:05:00,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 14:05:00,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484202624] [2021-11-05 14:05:00,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:05:00,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 14:05:00,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 14:05:00,701 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 14:05:00,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-05 14:05:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:05:01,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-05 14:05:01,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:05:01,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:05:01,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:05:01,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:05:01,974 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 14:05:01,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484202624] [2021-11-05 14:05:01,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484202624] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 14:05:01,974 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:05:01,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-11-05 14:05:01,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671359633] [2021-11-05 14:05:01,974 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 14:05:01,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 14:05:01,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 14:05:01,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 14:05:01,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-05 14:05:01,975 INFO L87 Difference]: Start difference. First operand 10436 states and 13399 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) [2021-11-05 14:05:55,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:05:55,059 INFO L93 Difference]: Finished difference Result 234963 states and 306466 transitions. [2021-11-05 14:05:55,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-05 14:05:55,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) Word has length 53 [2021-11-05 14:05:55,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:05:55,763 INFO L225 Difference]: With dead ends: 234963 [2021-11-05 14:05:55,764 INFO L226 Difference]: Without dead ends: 224535 [2021-11-05 14:05:55,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 2681.64ms TimeCoverageRelationStatistics Valid=337, Invalid=1145, Unknown=0, NotChecked=0, Total=1482 [2021-11-05 14:05:55,837 INFO L933 BasicCegarLoop]: 2151 mSDtfsCounter, 7042 mSDsluCounter, 11514 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4284.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7042 SdHoareTripleChecker+Valid, 13665 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.14ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4518.53ms IncrementalHoareTripleChecker+Time [2021-11-05 14:05:55,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7042 Valid, 13665 Invalid, 549 Unknown, 0 Unchecked, 22.14ms Time], IncrementalHoareTripleChecker [20 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 4518.53ms Time] [2021-11-05 14:05:55,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224535 states. [2021-11-05 14:05:59,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224535 to 10280. [2021-11-05 14:05:59,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10280 states, 10269 states have (on average 1.2831823936118414) internal successors, (13177), 10279 states have internal predecessors, (13177), 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) [2021-11-05 14:05:59,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10280 states to 10280 states and 13177 transitions. [2021-11-05 14:05:59,617 INFO L78 Accepts]: Start accepts. Automaton has 10280 states and 13177 transitions. Word has length 53 [2021-11-05 14:05:59,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:05:59,617 INFO L470 AbstractCegarLoop]: Abstraction has 10280 states and 13177 transitions. [2021-11-05 14:05:59,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 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) [2021-11-05 14:05:59,617 INFO L276 IsEmpty]: Start isEmpty. Operand 10280 states and 13177 transitions. [2021-11-05 14:05:59,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-05 14:05:59,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:05:59,618 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:05:59,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-05 14:05:59,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 14:05:59,820 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:05:59,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:05:59,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1963806063, now seen corresponding path program 1 times [2021-11-05 14:05:59,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 14:05:59,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87397120] [2021-11-05 14:05:59,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:05:59,823 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 14:05:59,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 14:05:59,824 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 14:05:59,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-05 14:06:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:06:00,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 14:06:00,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:06:00,455 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:06:00,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:06:00,755 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:06:00,755 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 14:06:00,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87397120] [2021-11-05 14:06:00,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87397120] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 14:06:00,756 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:06:00,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-05 14:06:00,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878943293] [2021-11-05 14:06:00,756 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 14:06:00,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 14:06:00,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 14:06:00,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 14:06:00,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 14:06:00,757 INFO L87 Difference]: Start difference. First operand 10280 states and 13177 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2021-11-05 14:06:02,814 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 14:06:05,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:06:05,248 INFO L93 Difference]: Finished difference Result 20598 states and 26401 transitions. [2021-11-05 14:06:05,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 14:06:05,249 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) Word has length 53 [2021-11-05 14:06:05,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:06:05,260 INFO L225 Difference]: With dead ends: 20598 [2021-11-05 14:06:05,260 INFO L226 Difference]: Without dead ends: 10324 [2021-11-05 14:06:05,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 174.30ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 14:06:05,266 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 29 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2116.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.10ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2140.90ms IncrementalHoareTripleChecker+Time [2021-11-05 14:06:05,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 2009 Invalid, 13 Unknown, 0 Unchecked, 1.10ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2140.90ms Time] [2021-11-05 14:06:05,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10324 states. [2021-11-05 14:06:07,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10324 to 10286. [2021-11-05 14:06:07,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10286 states, 10275 states have (on average 1.282919708029197) internal successors, (13182), 10285 states have internal predecessors, (13182), 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) [2021-11-05 14:06:07,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10286 states to 10286 states and 13182 transitions. [2021-11-05 14:06:07,556 INFO L78 Accepts]: Start accepts. Automaton has 10286 states and 13182 transitions. Word has length 53 [2021-11-05 14:06:07,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:06:07,556 INFO L470 AbstractCegarLoop]: Abstraction has 10286 states and 13182 transitions. [2021-11-05 14:06:07,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 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) [2021-11-05 14:06:07,556 INFO L276 IsEmpty]: Start isEmpty. Operand 10286 states and 13182 transitions. [2021-11-05 14:06:07,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-05 14:06:07,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:06:07,557 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] [2021-11-05 14:06:07,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-05 14:06:07,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 14:06:07,758 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:06:07,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:06:07,758 INFO L85 PathProgramCache]: Analyzing trace with hash 430540154, now seen corresponding path program 1 times [2021-11-05 14:06:07,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 14:06:07,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921868505] [2021-11-05 14:06:07,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:06:07,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 14:06:07,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 14:06:07,760 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 14:06:07,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-05 14:06:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:06:08,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-05 14:06:08,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:06:08,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:06:08,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:06:09,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 14:06:09,543 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 14:06:09,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921868505] [2021-11-05 14:06:09,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1921868505] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 14:06:09,543 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:06:09,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-05 14:06:09,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215513921] [2021-11-05 14:06:09,544 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 14:06:09,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 14:06:09,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 14:06:09,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 14:06:09,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-05 14:06:09,545 INFO L87 Difference]: Start difference. First operand 10286 states and 13182 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 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) [2021-11-05 14:06:11,599 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 14:06:19,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:06:19,835 INFO L93 Difference]: Finished difference Result 42117 states and 54023 transitions. [2021-11-05 14:06:19,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 14:06:19,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 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) Word has length 54 [2021-11-05 14:06:19,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:06:19,882 INFO L225 Difference]: With dead ends: 42117 [2021-11-05 14:06:19,882 INFO L226 Difference]: Without dead ends: 36593 [2021-11-05 14:06:19,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 193.29ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 14:06:19,897 INFO L933 BasicCegarLoop]: 910 mSDtfsCounter, 3519 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2329.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3519 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.57ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2371.07ms IncrementalHoareTripleChecker+Time [2021-11-05 14:06:19,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3519 Valid, 2841 Invalid, 81 Unknown, 0 Unchecked, 4.57ms Time], IncrementalHoareTripleChecker [33 Valid, 47 Invalid, 1 Unknown, 0 Unchecked, 2371.07ms Time] [2021-11-05 14:06:19,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36593 states. [2021-11-05 14:06:27,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36593 to 31548. [2021-11-05 14:06:27,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31548 states, 31537 states have (on average 1.2819228208136475) internal successors, (40428), 31547 states have internal predecessors, (40428), 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) [2021-11-05 14:06:27,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31548 states to 31548 states and 40428 transitions. [2021-11-05 14:06:27,512 INFO L78 Accepts]: Start accepts. Automaton has 31548 states and 40428 transitions. Word has length 54 [2021-11-05 14:06:27,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 14:06:27,513 INFO L470 AbstractCegarLoop]: Abstraction has 31548 states and 40428 transitions. [2021-11-05 14:06:27,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 5 states have internal predecessors, (107), 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) [2021-11-05 14:06:27,513 INFO L276 IsEmpty]: Start isEmpty. Operand 31548 states and 40428 transitions. [2021-11-05 14:06:27,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-05 14:06:27,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 14:06:27,514 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 14:06:27,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-05 14:06:27,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-05 14:06:27,714 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-05 14:06:27,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 14:06:27,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1196811633, now seen corresponding path program 1 times [2021-11-05 14:06:27,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-05 14:06:27,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952749287] [2021-11-05 14:06:27,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 14:06:27,716 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-05 14:06:27,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-05 14:06:27,717 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-05 14:06:27,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-05 14:06:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 14:06:28,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-05 14:06:28,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 14:06:28,409 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 14:06:28,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-05 14:06:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-05 14:06:28,577 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-05 14:06:28,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952749287] [2021-11-05 14:06:28,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952749287] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-05 14:06:28,578 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-05 14:06:28,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-05 14:06:28,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313682046] [2021-11-05 14:06:28,578 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-05 14:06:28,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 14:06:28,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-05 14:06:28,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 14:06:28,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 14:06:28,579 INFO L87 Difference]: Start difference. First operand 31548 states and 40428 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2021-11-05 14:06:50,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 14:06:50,439 INFO L93 Difference]: Finished difference Result 112751 states and 145474 transitions. [2021-11-05 14:06:50,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 14:06:50,441 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) Word has length 55 [2021-11-05 14:06:50,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 14:06:50,570 INFO L225 Difference]: With dead ends: 112751 [2021-11-05 14:06:50,570 INFO L226 Difference]: Without dead ends: 81211 [2021-11-05 14:06:50,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 161.86ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 14:06:50,613 INFO L933 BasicCegarLoop]: 1222 mSDtfsCounter, 833 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 440.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.19ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 484.75ms IncrementalHoareTripleChecker+Time [2021-11-05 14:06:50,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [833 Valid, 2830 Invalid, 42 Unknown, 0 Unchecked, 3.19ms Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 484.75ms Time] [2021-11-05 14:06:50,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81211 states.