./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 5b36d44f 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-5b36d44 [2021-11-07 10:32:23,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 10:32:23,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 10:32:23,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 10:32:23,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 10:32:23,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 10:32:23,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 10:32:23,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 10:32:23,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 10:32:23,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 10:32:23,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 10:32:23,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 10:32:23,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 10:32:23,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 10:32:23,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 10:32:23,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 10:32:23,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 10:32:23,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 10:32:23,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 10:32:23,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 10:32:23,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 10:32:23,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 10:32:23,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 10:32:23,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 10:32:23,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 10:32:23,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 10:32:23,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 10:32:23,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 10:32:23,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 10:32:23,614 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 10:32:23,615 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 10:32:23,615 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 10:32:23,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 10:32:23,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 10:32:23,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 10:32:23,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 10:32:23,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 10:32:23,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 10:32:23,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 10:32:23,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 10:32:23,621 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 10:32:23,622 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 10:32:23,652 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 10:32:23,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 10:32:23,653 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 10:32:23,653 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 10:32:23,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 10:32:23,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 10:32:23,655 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 10:32:23,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 10:32:23,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 10:32:23,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 10:32:23,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 10:32:23,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 10:32:23,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 10:32:23,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 10:32:23,657 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 10:32:23,657 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 10:32:23,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 10:32:23,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 10:32:23,658 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 10:32:23,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 10:32:23,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 10:32:23,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 10:32:23,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 10:32:23,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 10:32:23,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 10:32:23,659 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 10:32:23,659 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 10:32:23,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 10:32:23,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 10:32:23,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a [2021-11-07 10:32:23,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 10:32:23,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 10:32:23,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 10:32:23,900 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 10:32:23,901 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 10:32:23,902 INFO L432 ainManager$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 [2021-11-07 10:32:23,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41739af4c/16b3cbce97694ba9a77473304d0b8208/FLAG934c614f0 [2021-11-07 10:32:24,570 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 10:32:24,571 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 [2021-11-07 10:32:24,607 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41739af4c/16b3cbce97694ba9a77473304d0b8208/FLAG934c614f0 [2021-11-07 10:32:24,748 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41739af4c/16b3cbce97694ba9a77473304d0b8208 [2021-11-07 10:32:24,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 10:32:24,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 10:32:24,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 10:32:24,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 10:32:24,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 10:32:24,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:32:24" (1/1) ... [2021-11-07 10:32:24,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea0219f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:24, skipping insertion in model container [2021-11-07 10:32:24,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:32:24" (1/1) ... [2021-11-07 10:32:24,762 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 10:32:24,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 10:32:25,848 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] [2021-11-07 10:32:25,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 10:32:25,921 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 10:32:26,136 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] [2021-11-07 10:32:26,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 10:32:26,275 INFO L208 MainTranslator]: Completed translation [2021-11-07 10:32:26,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:26 WrapperNode [2021-11-07 10:32:26,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 10:32:26,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 10:32:26,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 10:32:26,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 10:32:26,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:26" (1/1) ... [2021-11-07 10:32:26,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:26" (1/1) ... [2021-11-07 10:32:26,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 10:32:26,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 10:32:26,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 10:32:26,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 10:32:26,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:26" (1/1) ... [2021-11-07 10:32:26,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:26" (1/1) ... [2021-11-07 10:32:26,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:26" (1/1) ... [2021-11-07 10:32:26,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:26" (1/1) ... [2021-11-07 10:32:26,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:26" (1/1) ... [2021-11-07 10:32:26,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:26" (1/1) ... [2021-11-07 10:32:26,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:26" (1/1) ... [2021-11-07 10:32:26,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 10:32:26,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 10:32:26,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 10:32:26,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 10:32:26,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:26" (1/1) ... [2021-11-07 10:32:26,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 10:32:26,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:32:26,581 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) [2021-11-07 10:32:26,587 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 [2021-11-07 10:32:26,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 10:32:26,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 10:32:26,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 10:32:26,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 10:32:26,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 10:32:26,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 10:32:26,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 10:32:26,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 10:32:26,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 10:32:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 10:32:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 10:32:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 10:32:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 10:32:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 10:32:26,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 10:32:26,975 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 10:32:29,759 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume !false; [2021-11-07 10:32:29,760 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume false; [2021-11-07 10:32:29,767 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 10:32:29,768 INFO L299 CfgBuilder]: Removed 434 assume(true) statements. [2021-11-07 10:32:29,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:32:29 BoogieIcfgContainer [2021-11-07 10:32:29,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 10:32:29,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 10:32:29,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 10:32:29,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 10:32:29,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:32:24" (1/3) ... [2021-11-07 10:32:29,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f60127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:32:29, skipping insertion in model container [2021-11-07 10:32:29,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:26" (2/3) ... [2021-11-07 10:32:29,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52f60127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:32:29, skipping insertion in model container [2021-11-07 10:32:29,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:32:29" (3/3) ... [2021-11-07 10:32:29,777 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-07 10:32:29,781 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 10:32:29,781 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-07 10:32:29,819 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 10:32:29,824 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 [2021-11-07 10:32:29,824 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-07 10:32:29,842 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) [2021-11-07 10:32:29,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 10:32:29,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:29,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:32:29,848 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)] === [2021-11-07 10:32:29,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:29,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1465825715, now seen corresponding path program 1 times [2021-11-07 10:32:29,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:29,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843429580] [2021-11-07 10:32:29,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:29,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:30,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:30,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:30,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843429580] [2021-11-07 10:32:30,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843429580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:30,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:30,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 10:32:30,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061605348] [2021-11-07 10:32:30,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:30,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 10:32:30,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:30,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 10:32:30,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:32:30,263 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) [2021-11-07 10:32:30,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:30,425 INFO L93 Difference]: Finished difference Result 1189 states and 1749 transitions. [2021-11-07 10:32:30,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 10:32:30,427 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 [2021-11-07 10:32:30,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:30,440 INFO L225 Difference]: With dead ends: 1189 [2021-11-07 10:32:30,440 INFO L226 Difference]: Without dead ends: 765 [2021-11-07 10:32:30,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.97ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:32:30,448 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 503 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.20ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.29ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:30,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 1007 Invalid, 39 Unknown, 0 Unchecked, 7.20ms Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 82.29ms Time] [2021-11-07 10:32:30,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2021-11-07 10:32:30,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 747. [2021-11-07 10:32:30,529 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) [2021-11-07 10:32:30,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 977 transitions. [2021-11-07 10:32:30,533 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 977 transitions. Word has length 10 [2021-11-07 10:32:30,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:30,534 INFO L470 AbstractCegarLoop]: Abstraction has 747 states and 977 transitions. [2021-11-07 10:32:30,534 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) [2021-11-07 10:32:30,534 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 977 transitions. [2021-11-07 10:32:30,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 10:32:30,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:30,535 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:32:30,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 10:32:30,536 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)] === [2021-11-07 10:32:30,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:30,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1804042980, now seen corresponding path program 1 times [2021-11-07 10:32:30,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:30,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683046622] [2021-11-07 10:32:30,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:30,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:30,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:30,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683046622] [2021-11-07 10:32:30,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683046622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:30,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:30,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 10:32:30,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929503953] [2021-11-07 10:32:30,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:30,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 10:32:30,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:30,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 10:32:30,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:32:30,625 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) [2021-11-07 10:32:30,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:30,685 INFO L93 Difference]: Finished difference Result 2217 states and 2904 transitions. [2021-11-07 10:32:30,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 10:32:30,686 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 [2021-11-07 10:32:30,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:30,693 INFO L225 Difference]: With dead ends: 2217 [2021-11-07 10:32:30,693 INFO L226 Difference]: Without dead ends: 1475 [2021-11-07 10:32:30,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:32:30,697 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 487 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.28ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.75ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:30,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 985 Invalid, 20 Unknown, 0 Unchecked, 2.28ms Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 15.75ms Time] [2021-11-07 10:32:30,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2021-11-07 10:32:30,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1446. [2021-11-07 10:32:30,744 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) [2021-11-07 10:32:30,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 1903 transitions. [2021-11-07 10:32:30,749 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 1903 transitions. Word has length 11 [2021-11-07 10:32:30,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:30,749 INFO L470 AbstractCegarLoop]: Abstraction has 1446 states and 1903 transitions. [2021-11-07 10:32:30,749 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) [2021-11-07 10:32:30,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 1903 transitions. [2021-11-07 10:32:30,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 10:32:30,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:30,752 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] [2021-11-07 10:32:30,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 10:32:30,752 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)] === [2021-11-07 10:32:30,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:30,753 INFO L85 PathProgramCache]: Analyzing trace with hash 739890622, now seen corresponding path program 1 times [2021-11-07 10:32:30,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:30,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013989156] [2021-11-07 10:32:30,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:30,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:30,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:30,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013989156] [2021-11-07 10:32:30,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013989156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:30,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:30,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 10:32:30,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300735353] [2021-11-07 10:32:30,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:30,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 10:32:30,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:30,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 10:32:30,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:32:30,847 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) [2021-11-07 10:32:30,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:30,938 INFO L93 Difference]: Finished difference Result 3924 states and 5208 transitions. [2021-11-07 10:32:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 10:32:30,938 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 [2021-11-07 10:32:30,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:30,948 INFO L225 Difference]: With dead ends: 3924 [2021-11-07 10:32:30,948 INFO L226 Difference]: Without dead ends: 2485 [2021-11-07 10:32:30,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:32:30,952 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 453 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.13ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.92ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:30,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 902 Invalid, 15 Unknown, 0 Unchecked, 2.13ms Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 15.92ms Time] [2021-11-07 10:32:30,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2485 states. [2021-11-07 10:32:31,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2485 to 2453. [2021-11-07 10:32:31,016 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) [2021-11-07 10:32:31,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 3277 transitions. [2021-11-07 10:32:31,025 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 3277 transitions. Word has length 38 [2021-11-07 10:32:31,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:31,025 INFO L470 AbstractCegarLoop]: Abstraction has 2453 states and 3277 transitions. [2021-11-07 10:32:31,025 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) [2021-11-07 10:32:31,026 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 3277 transitions. [2021-11-07 10:32:31,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 10:32:31,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:31,028 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] [2021-11-07 10:32:31,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 10:32:31,029 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)] === [2021-11-07 10:32:31,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:31,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1309389857, now seen corresponding path program 1 times [2021-11-07 10:32:31,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:31,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044024630] [2021-11-07 10:32:31,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:31,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:31,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:31,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:31,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044024630] [2021-11-07 10:32:31,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044024630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:31,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:31,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:32:31,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238491664] [2021-11-07 10:32:31,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:31,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:32:31,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:31,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:32:31,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:32:31,112 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) [2021-11-07 10:32:31,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:31,276 INFO L93 Difference]: Finished difference Result 7327 states and 9781 transitions. [2021-11-07 10:32:31,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:32:31,277 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 [2021-11-07 10:32:31,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:31,294 INFO L225 Difference]: With dead ends: 7327 [2021-11-07 10:32:31,294 INFO L226 Difference]: Without dead ends: 4882 [2021-11-07 10:32:31,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.43ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:32:31,307 INFO L933 BasicCegarLoop]: 862 mSDtfsCounter, 979 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.81ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.02ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:31,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 1863 Invalid, 12 Unknown, 0 Unchecked, 3.81ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 11.02ms Time] [2021-11-07 10:32:31,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4882 states. [2021-11-07 10:32:31,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4882 to 2469. [2021-11-07 10:32:31,421 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) [2021-11-07 10:32:31,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2469 states to 2469 states and 3293 transitions. [2021-11-07 10:32:31,428 INFO L78 Accepts]: Start accepts. Automaton has 2469 states and 3293 transitions. Word has length 41 [2021-11-07 10:32:31,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:31,428 INFO L470 AbstractCegarLoop]: Abstraction has 2469 states and 3293 transitions. [2021-11-07 10:32:31,428 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) [2021-11-07 10:32:31,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2469 states and 3293 transitions. [2021-11-07 10:32:31,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 10:32:31,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:31,432 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] [2021-11-07 10:32:31,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 10:32:31,432 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)] === [2021-11-07 10:32:31,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:31,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1996940455, now seen corresponding path program 1 times [2021-11-07 10:32:31,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:31,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576108305] [2021-11-07 10:32:31,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:31,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:31,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:31,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:31,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:31,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576108305] [2021-11-07 10:32:31,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576108305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:31,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:31,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:32:31,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977794791] [2021-11-07 10:32:31,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:31,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:32:31,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:31,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:32:31,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:32:31,527 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) [2021-11-07 10:32:31,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:31,674 INFO L93 Difference]: Finished difference Result 6707 states and 8941 transitions. [2021-11-07 10:32:31,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:32:31,675 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 [2021-11-07 10:32:31,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:31,712 INFO L225 Difference]: With dead ends: 6707 [2021-11-07 10:32:31,713 INFO L226 Difference]: Without dead ends: 4246 [2021-11-07 10:32:31,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.01ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:32:31,718 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 742 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.24ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:31,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [742 Valid, 1876 Invalid, 11 Unknown, 0 Unchecked, 3.48ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 10.24ms Time] [2021-11-07 10:32:31,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4246 states. [2021-11-07 10:32:31,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4246 to 2485. [2021-11-07 10:32:31,807 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) [2021-11-07 10:32:31,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2485 states to 2485 states and 3309 transitions. [2021-11-07 10:32:31,817 INFO L78 Accepts]: Start accepts. Automaton has 2485 states and 3309 transitions. Word has length 42 [2021-11-07 10:32:31,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:31,818 INFO L470 AbstractCegarLoop]: Abstraction has 2485 states and 3309 transitions. [2021-11-07 10:32:31,818 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) [2021-11-07 10:32:31,819 INFO L276 IsEmpty]: Start isEmpty. Operand 2485 states and 3309 transitions. [2021-11-07 10:32:31,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 10:32:31,820 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:31,821 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] [2021-11-07 10:32:31,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 10:32:31,826 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)] === [2021-11-07 10:32:31,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:31,826 INFO L85 PathProgramCache]: Analyzing trace with hash -942849768, now seen corresponding path program 1 times [2021-11-07 10:32:31,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:31,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727267280] [2021-11-07 10:32:31,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:31,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:31,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:31,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:31,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727267280] [2021-11-07 10:32:31,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727267280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:31,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:31,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:32:31,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614076009] [2021-11-07 10:32:31,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:31,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:32:31,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:31,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:32:31,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:32:31,924 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) [2021-11-07 10:32:32,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:32,513 INFO L93 Difference]: Finished difference Result 13586 states and 18045 transitions. [2021-11-07 10:32:32,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 10:32:32,513 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 [2021-11-07 10:32:32,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:32,586 INFO L225 Difference]: With dead ends: 13586 [2021-11-07 10:32:32,587 INFO L226 Difference]: Without dead ends: 12316 [2021-11-07 10:32:32,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 37.97ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 10:32:32,593 INFO L933 BasicCegarLoop]: 1056 mSDtfsCounter, 3034 mSDsluCounter, 3157 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3034 SdHoareTripleChecker+Valid, 4213 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.39ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.68ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:32,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3034 Valid, 4213 Invalid, 144 Unknown, 0 Unchecked, 12.39ms Time], IncrementalHoareTripleChecker [25 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 109.68ms Time] [2021-11-07 10:32:32,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12316 states. [2021-11-07 10:32:32,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12316 to 2545. [2021-11-07 10:32:32,765 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) [2021-11-07 10:32:32,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 3369 transitions. [2021-11-07 10:32:32,772 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 3369 transitions. Word has length 42 [2021-11-07 10:32:32,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:32,772 INFO L470 AbstractCegarLoop]: Abstraction has 2545 states and 3369 transitions. [2021-11-07 10:32:32,773 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) [2021-11-07 10:32:32,773 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 3369 transitions. [2021-11-07 10:32:32,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 10:32:32,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:32,774 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] [2021-11-07 10:32:32,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 10:32:32,775 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)] === [2021-11-07 10:32:32,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:32,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1763769626, now seen corresponding path program 1 times [2021-11-07 10:32:32,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:32,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989060675] [2021-11-07 10:32:32,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:32,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:32,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:32,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989060675] [2021-11-07 10:32:32,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989060675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:32,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:32,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 10:32:32,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916491343] [2021-11-07 10:32:32,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:32,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 10:32:32,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:32,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 10:32:32,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:32:32,868 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) [2021-11-07 10:32:34,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:34,390 INFO L93 Difference]: Finished difference Result 19757 states and 26263 transitions. [2021-11-07 10:32:34,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 10:32:34,391 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 [2021-11-07 10:32:34,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:34,429 INFO L225 Difference]: With dead ends: 19757 [2021-11-07 10:32:34,429 INFO L226 Difference]: Without dead ends: 17220 [2021-11-07 10:32:34,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 92.21ms TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-07 10:32:34,439 INFO L933 BasicCegarLoop]: 2470 mSDtfsCounter, 4259 mSDsluCounter, 8569 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 499.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4259 SdHoareTripleChecker+Valid, 11039 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.96ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 591.43ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:34,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4259 Valid, 11039 Invalid, 396 Unknown, 0 Unchecked, 17.96ms Time], IncrementalHoareTripleChecker [21 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 591.43ms Time] [2021-11-07 10:32:34,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17220 states. [2021-11-07 10:32:34,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17220 to 2523. [2021-11-07 10:32:34,716 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) [2021-11-07 10:32:34,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2523 states to 2523 states and 3327 transitions. [2021-11-07 10:32:34,721 INFO L78 Accepts]: Start accepts. Automaton has 2523 states and 3327 transitions. Word has length 42 [2021-11-07 10:32:34,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:34,721 INFO L470 AbstractCegarLoop]: Abstraction has 2523 states and 3327 transitions. [2021-11-07 10:32:34,722 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) [2021-11-07 10:32:34,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2523 states and 3327 transitions. [2021-11-07 10:32:34,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 10:32:34,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:34,723 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] [2021-11-07 10:32:34,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 10:32:34,723 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)] === [2021-11-07 10:32:34,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:34,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1882537444, now seen corresponding path program 1 times [2021-11-07 10:32:34,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:34,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81548539] [2021-11-07 10:32:34,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:34,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:34,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:34,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:34,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:34,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81548539] [2021-11-07 10:32:34,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81548539] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:34,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:34,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:32:34,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616368648] [2021-11-07 10:32:34,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:34,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:32:34,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:34,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:32:34,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:32:34,799 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) [2021-11-07 10:32:35,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:35,305 INFO L93 Difference]: Finished difference Result 8648 states and 11424 transitions. [2021-11-07 10:32:35,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:32:35,305 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 [2021-11-07 10:32:35,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:35,316 INFO L225 Difference]: With dead ends: 8648 [2021-11-07 10:32:35,316 INFO L226 Difference]: Without dead ends: 6133 [2021-11-07 10:32:35,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.52ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:32:35,321 INFO L933 BasicCegarLoop]: 1026 mSDtfsCounter, 1250 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.10ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90.49ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:35,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1250 Valid, 2686 Invalid, 39 Unknown, 0 Unchecked, 4.10ms Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 90.49ms Time] [2021-11-07 10:32:35,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6133 states. [2021-11-07 10:32:35,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6133 to 2261. [2021-11-07 10:32:35,471 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) [2021-11-07 10:32:35,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 2965 transitions. [2021-11-07 10:32:35,475 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 2965 transitions. Word has length 44 [2021-11-07 10:32:35,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:35,475 INFO L470 AbstractCegarLoop]: Abstraction has 2261 states and 2965 transitions. [2021-11-07 10:32:35,475 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) [2021-11-07 10:32:35,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 2965 transitions. [2021-11-07 10:32:35,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 10:32:35,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:35,476 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] [2021-11-07 10:32:35,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 10:32:35,477 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)] === [2021-11-07 10:32:35,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:35,477 INFO L85 PathProgramCache]: Analyzing trace with hash -297582244, now seen corresponding path program 1 times [2021-11-07 10:32:35,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:35,477 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294403202] [2021-11-07 10:32:35,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:35,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:35,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:35,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:35,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294403202] [2021-11-07 10:32:35,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294403202] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:35,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:35,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 10:32:35,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754302278] [2021-11-07 10:32:35,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:35,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:32:35,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:35,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:32:35,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:32:35,577 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) [2021-11-07 10:32:35,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:35,963 INFO L93 Difference]: Finished difference Result 3590 states and 4695 transitions. [2021-11-07 10:32:35,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:32:35,967 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 [2021-11-07 10:32:35,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:35,977 INFO L225 Difference]: With dead ends: 3590 [2021-11-07 10:32:35,977 INFO L226 Difference]: Without dead ends: 3575 [2021-11-07 10:32:35,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.37ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:32:35,981 INFO L933 BasicCegarLoop]: 855 mSDtfsCounter, 820 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 141.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.51ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 170.80ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:35,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [820 Valid, 1811 Invalid, 86 Unknown, 0 Unchecked, 2.51ms Time], IncrementalHoareTripleChecker [18 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 170.80ms Time] [2021-11-07 10:32:35,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3575 states. [2021-11-07 10:32:36,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3575 to 3517. [2021-11-07 10:32:36,315 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) [2021-11-07 10:32:36,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3517 states to 3517 states and 4617 transitions. [2021-11-07 10:32:36,323 INFO L78 Accepts]: Start accepts. Automaton has 3517 states and 4617 transitions. Word has length 44 [2021-11-07 10:32:36,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:36,324 INFO L470 AbstractCegarLoop]: Abstraction has 3517 states and 4617 transitions. [2021-11-07 10:32:36,324 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) [2021-11-07 10:32:36,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3517 states and 4617 transitions. [2021-11-07 10:32:36,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 10:32:36,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:36,326 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] [2021-11-07 10:32:36,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 10:32:36,326 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)] === [2021-11-07 10:32:36,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:36,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1289306960, now seen corresponding path program 1 times [2021-11-07 10:32:36,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:36,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455434232] [2021-11-07 10:32:36,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:36,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:36,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:36,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:36,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455434232] [2021-11-07 10:32:36,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455434232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:36,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:36,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 10:32:36,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112917033] [2021-11-07 10:32:36,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:36,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 10:32:36,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:36,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 10:32:36,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:32:36,458 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) [2021-11-07 10:32:37,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:37,583 INFO L93 Difference]: Finished difference Result 11542 states and 15215 transitions. [2021-11-07 10:32:37,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 10:32:37,583 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 [2021-11-07 10:32:37,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:37,601 INFO L225 Difference]: With dead ends: 11542 [2021-11-07 10:32:37,601 INFO L226 Difference]: Without dead ends: 8978 [2021-11-07 10:32:37,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 160.54ms TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-11-07 10:32:37,608 INFO L933 BasicCegarLoop]: 1526 mSDtfsCounter, 2894 mSDsluCounter, 3293 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 249.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2894 SdHoareTripleChecker+Valid, 4819 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.76ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 287.86ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:37,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2894 Valid, 4819 Invalid, 235 Unknown, 0 Unchecked, 7.76ms Time], IncrementalHoareTripleChecker [29 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 287.86ms Time] [2021-11-07 10:32:37,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8978 states. [2021-11-07 10:32:37,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8978 to 3533. [2021-11-07 10:32:37,925 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) [2021-11-07 10:32:37,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3533 states to 3533 states and 4633 transitions. [2021-11-07 10:32:37,932 INFO L78 Accepts]: Start accepts. Automaton has 3533 states and 4633 transitions. Word has length 47 [2021-11-07 10:32:37,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:37,932 INFO L470 AbstractCegarLoop]: Abstraction has 3533 states and 4633 transitions. [2021-11-07 10:32:37,933 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) [2021-11-07 10:32:37,933 INFO L276 IsEmpty]: Start isEmpty. Operand 3533 states and 4633 transitions. [2021-11-07 10:32:37,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 10:32:37,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:37,934 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] [2021-11-07 10:32:37,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 10:32:37,935 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)] === [2021-11-07 10:32:37,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:37,935 INFO L85 PathProgramCache]: Analyzing trace with hash 523835089, now seen corresponding path program 1 times [2021-11-07 10:32:37,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:37,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936216856] [2021-11-07 10:32:37,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:37,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:38,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:38,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:38,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936216856] [2021-11-07 10:32:38,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936216856] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:38,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:38,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:32:38,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815857726] [2021-11-07 10:32:38,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:38,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:32:38,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:38,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:32:38,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:32:38,013 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) [2021-11-07 10:32:38,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:38,687 INFO L93 Difference]: Finished difference Result 11349 states and 14904 transitions. [2021-11-07 10:32:38,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:32:38,688 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 [2021-11-07 10:32:38,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:38,699 INFO L225 Difference]: With dead ends: 11349 [2021-11-07 10:32:38,700 INFO L226 Difference]: Without dead ends: 7824 [2021-11-07 10:32:38,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.12ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:32:38,708 INFO L933 BasicCegarLoop]: 1197 mSDtfsCounter, 867 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 2815 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.95ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.35ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:38,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 2815 Invalid, 42 Unknown, 0 Unchecked, 2.95ms Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 94.35ms Time] [2021-11-07 10:32:38,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7824 states. [2021-11-07 10:32:39,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7824 to 2999. [2021-11-07 10:32:39,033 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) [2021-11-07 10:32:39,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 3920 transitions. [2021-11-07 10:32:39,038 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 3920 transitions. Word has length 51 [2021-11-07 10:32:39,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:39,038 INFO L470 AbstractCegarLoop]: Abstraction has 2999 states and 3920 transitions. [2021-11-07 10:32:39,039 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) [2021-11-07 10:32:39,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 3920 transitions. [2021-11-07 10:32:39,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 10:32:39,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:39,040 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] [2021-11-07 10:32:39,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 10:32:39,040 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)] === [2021-11-07 10:32:39,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:39,041 INFO L85 PathProgramCache]: Analyzing trace with hash 291347065, now seen corresponding path program 1 times [2021-11-07 10:32:39,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:39,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604516502] [2021-11-07 10:32:39,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:39,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:39,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:39,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:39,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604516502] [2021-11-07 10:32:39,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604516502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:39,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:39,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:32:39,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030474344] [2021-11-07 10:32:39,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:39,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:32:39,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:39,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:32:39,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:32:39,138 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) [2021-11-07 10:32:39,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:39,938 INFO L93 Difference]: Finished difference Result 9993 states and 13045 transitions. [2021-11-07 10:32:39,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:32:39,938 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 [2021-11-07 10:32:39,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:39,947 INFO L225 Difference]: With dead ends: 9993 [2021-11-07 10:32:39,947 INFO L226 Difference]: Without dead ends: 7413 [2021-11-07 10:32:39,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.30ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:32:39,951 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 1354 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.57ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.66ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:39,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1354 Valid, 2696 Invalid, 25 Unknown, 0 Unchecked, 3.57ms Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 82.66ms Time] [2021-11-07 10:32:39,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7413 states. [2021-11-07 10:32:40,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7413 to 2791. [2021-11-07 10:32:40,173 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) [2021-11-07 10:32:40,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 3634 transitions. [2021-11-07 10:32:40,177 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 3634 transitions. Word has length 52 [2021-11-07 10:32:40,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:40,177 INFO L470 AbstractCegarLoop]: Abstraction has 2791 states and 3634 transitions. [2021-11-07 10:32:40,178 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) [2021-11-07 10:32:40,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 3634 transitions. [2021-11-07 10:32:40,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 10:32:40,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:40,183 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] [2021-11-07 10:32:40,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 10:32:40,184 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)] === [2021-11-07 10:32:40,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:40,184 INFO L85 PathProgramCache]: Analyzing trace with hash -729721289, now seen corresponding path program 1 times [2021-11-07 10:32:40,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:40,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133204203] [2021-11-07 10:32:40,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:40,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:40,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:40,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:40,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133204203] [2021-11-07 10:32:40,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133204203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:40,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:40,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:32:40,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700063306] [2021-11-07 10:32:40,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:40,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:32:40,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:40,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:32:40,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:32:40,269 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) [2021-11-07 10:32:41,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:41,805 INFO L93 Difference]: Finished difference Result 16519 states and 21743 transitions. [2021-11-07 10:32:41,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 10:32:41,805 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 [2021-11-07 10:32:41,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:41,824 INFO L225 Difference]: With dead ends: 16519 [2021-11-07 10:32:41,825 INFO L226 Difference]: Without dead ends: 15196 [2021-11-07 10:32:41,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 36.52ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 10:32:41,830 INFO L933 BasicCegarLoop]: 1441 mSDtfsCounter, 1931 mSDsluCounter, 3585 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 123.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1931 SdHoareTripleChecker+Valid, 5026 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.09ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 148.62ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:41,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1931 Valid, 5026 Invalid, 181 Unknown, 0 Unchecked, 6.09ms Time], IncrementalHoareTripleChecker [16 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 148.62ms Time] [2021-11-07 10:32:41,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15196 states. [2021-11-07 10:32:42,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15196 to 2839. [2021-11-07 10:32:42,128 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) [2021-11-07 10:32:42,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2839 states to 2839 states and 3682 transitions. [2021-11-07 10:32:42,131 INFO L78 Accepts]: Start accepts. Automaton has 2839 states and 3682 transitions. Word has length 52 [2021-11-07 10:32:42,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:42,131 INFO L470 AbstractCegarLoop]: Abstraction has 2839 states and 3682 transitions. [2021-11-07 10:32:42,131 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) [2021-11-07 10:32:42,131 INFO L276 IsEmpty]: Start isEmpty. Operand 2839 states and 3682 transitions. [2021-11-07 10:32:42,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 10:32:42,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:42,132 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] [2021-11-07 10:32:42,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 10:32:42,133 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)] === [2021-11-07 10:32:42,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:42,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1876302265, now seen corresponding path program 1 times [2021-11-07 10:32:42,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:42,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121525629] [2021-11-07 10:32:42,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:42,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:42,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:42,196 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:42,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121525629] [2021-11-07 10:32:42,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121525629] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:42,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:42,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 10:32:42,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160686207] [2021-11-07 10:32:42,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:42,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 10:32:42,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:42,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 10:32:42,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:32:42,198 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) [2021-11-07 10:32:42,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:42,634 INFO L93 Difference]: Finished difference Result 5333 states and 6923 transitions. [2021-11-07 10:32:42,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 10:32:42,635 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 [2021-11-07 10:32:42,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:42,639 INFO L225 Difference]: With dead ends: 5333 [2021-11-07 10:32:42,639 INFO L226 Difference]: Without dead ends: 3986 [2021-11-07 10:32:42,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.34ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:32:42,642 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 438 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.26ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.88ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:42,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 1361 Invalid, 20 Unknown, 0 Unchecked, 1.26ms Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 21.88ms Time] [2021-11-07 10:32:42,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2021-11-07 10:32:42,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 2847. [2021-11-07 10:32:42,960 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) [2021-11-07 10:32:42,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 3690 transitions. [2021-11-07 10:32:42,963 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 3690 transitions. Word has length 52 [2021-11-07 10:32:42,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:42,963 INFO L470 AbstractCegarLoop]: Abstraction has 2847 states and 3690 transitions. [2021-11-07 10:32:42,963 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) [2021-11-07 10:32:42,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 3690 transitions. [2021-11-07 10:32:42,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 10:32:42,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:42,965 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] [2021-11-07 10:32:42,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 10:32:42,965 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)] === [2021-11-07 10:32:42,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:42,966 INFO L85 PathProgramCache]: Analyzing trace with hash -873150611, now seen corresponding path program 1 times [2021-11-07 10:32:42,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:42,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447996164] [2021-11-07 10:32:42,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:42,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:43,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:43,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447996164] [2021-11-07 10:32:43,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447996164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:43,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:43,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 10:32:43,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78221192] [2021-11-07 10:32:43,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:43,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 10:32:43,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:43,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 10:32:43,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-07 10:32:43,100 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) [2021-11-07 10:32:45,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:45,375 INFO L93 Difference]: Finished difference Result 14958 states and 19505 transitions. [2021-11-07 10:32:45,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-07 10:32:45,375 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 [2021-11-07 10:32:45,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:45,392 INFO L225 Difference]: With dead ends: 14958 [2021-11-07 10:32:45,392 INFO L226 Difference]: Without dead ends: 12530 [2021-11-07 10:32:45,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 475.39ms TimeCoverageRelationStatistics Valid=570, Invalid=2082, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 10:32:45,399 INFO L933 BasicCegarLoop]: 1546 mSDtfsCounter, 5010 mSDsluCounter, 5630 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 362.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5010 SdHoareTripleChecker+Valid, 7176 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.49ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 416.08ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:45,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5010 Valid, 7176 Invalid, 444 Unknown, 0 Unchecked, 11.49ms Time], IncrementalHoareTripleChecker [35 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 416.08ms Time] [2021-11-07 10:32:45,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12530 states. [2021-11-07 10:32:45,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12530 to 2845. [2021-11-07 10:32:45,722 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) [2021-11-07 10:32:45,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 3676 transitions. [2021-11-07 10:32:45,725 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 3676 transitions. Word has length 53 [2021-11-07 10:32:45,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:45,725 INFO L470 AbstractCegarLoop]: Abstraction has 2845 states and 3676 transitions. [2021-11-07 10:32:45,725 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) [2021-11-07 10:32:45,726 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 3676 transitions. [2021-11-07 10:32:45,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 10:32:45,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:45,727 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] [2021-11-07 10:32:45,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 10:32:45,727 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)] === [2021-11-07 10:32:45,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:45,727 INFO L85 PathProgramCache]: Analyzing trace with hash 24644017, now seen corresponding path program 1 times [2021-11-07 10:32:45,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:45,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123641038] [2021-11-07 10:32:45,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:45,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:45,778 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:45,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:45,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123641038] [2021-11-07 10:32:45,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123641038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:45,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:45,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:32:45,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076483392] [2021-11-07 10:32:45,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:45,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:32:45,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:45,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:32:45,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:32:45,780 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) [2021-11-07 10:32:46,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:46,280 INFO L93 Difference]: Finished difference Result 5701 states and 7365 transitions. [2021-11-07 10:32:46,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:32:46,280 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 [2021-11-07 10:32:46,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:46,283 INFO L225 Difference]: With dead ends: 5701 [2021-11-07 10:32:46,283 INFO L226 Difference]: Without dead ends: 2862 [2021-11-07 10:32:46,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.18ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:32:46,287 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 15 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 174.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.83ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 190.62ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:46,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1505 Invalid, 10 Unknown, 0 Unchecked, 0.83ms Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 190.62ms Time] [2021-11-07 10:32:46,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2862 states. [2021-11-07 10:32:46,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2862 to 2849. [2021-11-07 10:32:46,563 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) [2021-11-07 10:32:46,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 3679 transitions. [2021-11-07 10:32:46,565 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 3679 transitions. Word has length 53 [2021-11-07 10:32:46,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:46,566 INFO L470 AbstractCegarLoop]: Abstraction has 2849 states and 3679 transitions. [2021-11-07 10:32:46,566 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) [2021-11-07 10:32:46,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 3679 transitions. [2021-11-07 10:32:46,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 10:32:46,566 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:46,567 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] [2021-11-07 10:32:46,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 10:32:46,567 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)] === [2021-11-07 10:32:46,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:46,567 INFO L85 PathProgramCache]: Analyzing trace with hash 446058872, now seen corresponding path program 1 times [2021-11-07 10:32:46,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:46,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565335151] [2021-11-07 10:32:46,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:46,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:46,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:46,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:46,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:46,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565335151] [2021-11-07 10:32:46,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565335151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:46,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:46,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 10:32:46,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098689416] [2021-11-07 10:32:46,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:46,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:32:46,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:46,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:32:46,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:32:46,633 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) [2021-11-07 10:32:47,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:47,297 INFO L93 Difference]: Finished difference Result 4213 states and 5426 transitions. [2021-11-07 10:32:47,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:32:47,298 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 [2021-11-07 10:32:47,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:47,303 INFO L225 Difference]: With dead ends: 4213 [2021-11-07 10:32:47,304 INFO L226 Difference]: Without dead ends: 4207 [2021-11-07 10:32:47,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.86ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:32:47,305 INFO L933 BasicCegarLoop]: 896 mSDtfsCounter, 846 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 218.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.03ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 241.31ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:47,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 1868 Invalid, 44 Unknown, 0 Unchecked, 2.03ms Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 241.31ms Time] [2021-11-07 10:32:47,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4207 states. [2021-11-07 10:32:47,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4207 to 4161. [2021-11-07 10:32:47,747 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) [2021-11-07 10:32:47,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4161 states to 4161 states and 5379 transitions. [2021-11-07 10:32:47,752 INFO L78 Accepts]: Start accepts. Automaton has 4161 states and 5379 transitions. Word has length 54 [2021-11-07 10:32:47,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:47,752 INFO L470 AbstractCegarLoop]: Abstraction has 4161 states and 5379 transitions. [2021-11-07 10:32:47,752 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) [2021-11-07 10:32:47,752 INFO L276 IsEmpty]: Start isEmpty. Operand 4161 states and 5379 transitions. [2021-11-07 10:32:47,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 10:32:47,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:47,753 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] [2021-11-07 10:32:47,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 10:32:47,754 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)] === [2021-11-07 10:32:47,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:47,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1584391570, now seen corresponding path program 1 times [2021-11-07 10:32:47,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:47,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385133354] [2021-11-07 10:32:47,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:47,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:47,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:47,932 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 10:32:47,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:47,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385133354] [2021-11-07 10:32:47,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385133354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:47,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:47,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:32:47,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741620990] [2021-11-07 10:32:47,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:47,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:32:47,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:47,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:32:47,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:32:47,934 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) [2021-11-07 10:32:48,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:48,348 INFO L93 Difference]: Finished difference Result 8316 states and 10751 transitions. [2021-11-07 10:32:48,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:32:48,349 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 [2021-11-07 10:32:48,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:48,355 INFO L225 Difference]: With dead ends: 8316 [2021-11-07 10:32:48,355 INFO L226 Difference]: Without dead ends: 4161 [2021-11-07 10:32:48,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.68ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:32:48,361 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 1 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.81ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.29ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:48,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1501 Invalid, 7 Unknown, 0 Unchecked, 0.81ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 4.29ms Time] [2021-11-07 10:32:48,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4161 states. [2021-11-07 10:32:48,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4161 to 4161. [2021-11-07 10:32:48,775 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) [2021-11-07 10:32:48,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4161 states to 4161 states and 5378 transitions. [2021-11-07 10:32:48,780 INFO L78 Accepts]: Start accepts. Automaton has 4161 states and 5378 transitions. Word has length 55 [2021-11-07 10:32:48,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:48,780 INFO L470 AbstractCegarLoop]: Abstraction has 4161 states and 5378 transitions. [2021-11-07 10:32:48,780 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) [2021-11-07 10:32:48,780 INFO L276 IsEmpty]: Start isEmpty. Operand 4161 states and 5378 transitions. [2021-11-07 10:32:48,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 10:32:48,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:48,781 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] [2021-11-07 10:32:48,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 10:32:48,782 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)] === [2021-11-07 10:32:48,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:48,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1103311312, now seen corresponding path program 1 times [2021-11-07 10:32:48,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:48,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629706280] [2021-11-07 10:32:48,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:48,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:48,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-07 10:32:48,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:48,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629706280] [2021-11-07 10:32:48,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629706280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:48,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:48,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 10:32:48,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048727677] [2021-11-07 10:32:48,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:48,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:32:48,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:48,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:32:48,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:32:48,955 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) [2021-11-07 10:32:50,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:50,409 INFO L93 Difference]: Finished difference Result 10859 states and 14066 transitions. [2021-11-07 10:32:50,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:32:50,410 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 [2021-11-07 10:32:50,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:50,423 INFO L225 Difference]: With dead ends: 10859 [2021-11-07 10:32:50,423 INFO L226 Difference]: Without dead ends: 8950 [2021-11-07 10:32:50,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.86ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:32:50,429 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 766 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 186.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.56ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 215.79ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:50,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 1768 Invalid, 88 Unknown, 0 Unchecked, 2.56ms Time], IncrementalHoareTripleChecker [17 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 215.79ms Time] [2021-11-07 10:32:50,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8950 states. [2021-11-07 10:32:51,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8950 to 8709. [2021-11-07 10:32:51,455 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) [2021-11-07 10:32:51,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8709 states to 8709 states and 11303 transitions. [2021-11-07 10:32:51,469 INFO L78 Accepts]: Start accepts. Automaton has 8709 states and 11303 transitions. Word has length 55 [2021-11-07 10:32:51,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:51,469 INFO L470 AbstractCegarLoop]: Abstraction has 8709 states and 11303 transitions. [2021-11-07 10:32:51,469 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) [2021-11-07 10:32:51,470 INFO L276 IsEmpty]: Start isEmpty. Operand 8709 states and 11303 transitions. [2021-11-07 10:32:51,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 10:32:51,471 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:51,471 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] [2021-11-07 10:32:51,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 10:32:51,471 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)] === [2021-11-07 10:32:51,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:51,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1514792705, now seen corresponding path program 1 times [2021-11-07 10:32:51,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:51,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468010855] [2021-11-07 10:32:51,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:51,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:51,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:51,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:51,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468010855] [2021-11-07 10:32:51,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468010855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:51,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:51,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 10:32:51,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506456216] [2021-11-07 10:32:51,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:51,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 10:32:51,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:51,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 10:32:51,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:32:51,539 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) [2021-11-07 10:32:54,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:54,649 INFO L93 Difference]: Finished difference Result 25969 states and 33869 transitions. [2021-11-07 10:32:54,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 10:32:54,650 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 [2021-11-07 10:32:54,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:54,682 INFO L225 Difference]: With dead ends: 25969 [2021-11-07 10:32:54,682 INFO L226 Difference]: Without dead ends: 22427 [2021-11-07 10:32:54,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 107.10ms TimeCoverageRelationStatistics Valid=163, Invalid=437, Unknown=0, NotChecked=0, Total=600 [2021-11-07 10:32:54,692 INFO L933 BasicCegarLoop]: 1589 mSDtfsCounter, 2896 mSDsluCounter, 3629 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 174.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2896 SdHoareTripleChecker+Valid, 5218 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.21ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 207.26ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:54,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2896 Valid, 5218 Invalid, 236 Unknown, 0 Unchecked, 8.21ms Time], IncrementalHoareTripleChecker [23 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 207.26ms Time] [2021-11-07 10:32:54,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22427 states. [2021-11-07 10:32:55,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22427 to 8709. [2021-11-07 10:32:55,857 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) [2021-11-07 10:32:55,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8709 states to 8709 states and 11289 transitions. [2021-11-07 10:32:55,870 INFO L78 Accepts]: Start accepts. Automaton has 8709 states and 11289 transitions. Word has length 56 [2021-11-07 10:32:55,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:55,870 INFO L470 AbstractCegarLoop]: Abstraction has 8709 states and 11289 transitions. [2021-11-07 10:32:55,870 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) [2021-11-07 10:32:55,870 INFO L276 IsEmpty]: Start isEmpty. Operand 8709 states and 11289 transitions. [2021-11-07 10:32:55,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 10:32:55,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:55,871 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] [2021-11-07 10:32:55,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 10:32:55,871 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)] === [2021-11-07 10:32:55,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:55,872 INFO L85 PathProgramCache]: Analyzing trace with hash 850396480, now seen corresponding path program 1 times [2021-11-07 10:32:55,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:55,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020255585] [2021-11-07 10:32:55,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:55,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:55,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:55,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:55,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020255585] [2021-11-07 10:32:55,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020255585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:55,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:55,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:32:55,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362941436] [2021-11-07 10:32:55,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:55,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:32:55,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:55,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:32:55,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:32:55,954 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) [2021-11-07 10:32:57,385 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:32:59,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:59,818 INFO L93 Difference]: Finished difference Result 23747 states and 30994 transitions. [2021-11-07 10:32:59,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 10:32:59,818 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 [2021-11-07 10:32:59,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:59,842 INFO L225 Difference]: With dead ends: 23747 [2021-11-07 10:32:59,842 INFO L226 Difference]: Without dead ends: 15040 [2021-11-07 10:32:59,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.41ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:32:59,854 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 380 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1769.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 2666 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.36ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1814.01ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:59,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 2666 Invalid, 82 Unknown, 0 Unchecked, 3.36ms Time], IncrementalHoareTripleChecker [9 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 1814.01ms Time] [2021-11-07 10:32:59,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15040 states. [2021-11-07 10:33:00,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15040 to 8718. [2021-11-07 10:33:00,904 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) [2021-11-07 10:33:00,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8718 states to 8718 states and 11296 transitions. [2021-11-07 10:33:00,916 INFO L78 Accepts]: Start accepts. Automaton has 8718 states and 11296 transitions. Word has length 58 [2021-11-07 10:33:00,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:33:00,916 INFO L470 AbstractCegarLoop]: Abstraction has 8718 states and 11296 transitions. [2021-11-07 10:33:00,916 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) [2021-11-07 10:33:00,917 INFO L276 IsEmpty]: Start isEmpty. Operand 8718 states and 11296 transitions. [2021-11-07 10:33:00,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 10:33:00,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:33:00,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:33:00,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 10:33:00,918 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)] === [2021-11-07 10:33:00,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:33:00,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1274043202, now seen corresponding path program 1 times [2021-11-07 10:33:00,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:33:00,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544083813] [2021-11-07 10:33:00,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:33:00,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:33:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:33:00,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:33:00,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:33:00,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544083813] [2021-11-07 10:33:00,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544083813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:33:00,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:33:00,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 10:33:00,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553026048] [2021-11-07 10:33:00,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:33:00,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 10:33:00,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:33:00,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 10:33:00,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:33:00,974 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) [2021-11-07 10:33:02,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:33:02,067 INFO L93 Difference]: Finished difference Result 17476 states and 22648 transitions. [2021-11-07 10:33:02,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 10:33:02,067 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 [2021-11-07 10:33:02,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:33:02,079 INFO L225 Difference]: With dead ends: 17476 [2021-11-07 10:33:02,079 INFO L226 Difference]: Without dead ends: 8766 [2021-11-07 10:33:02,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.31ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:33:02,092 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 1 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.76ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.11ms IncrementalHoareTripleChecker+Time [2021-11-07 10:33:02,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 997 Invalid, 6 Unknown, 0 Unchecked, 0.76ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 5.11ms Time] [2021-11-07 10:33:02,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8766 states. [2021-11-07 10:33:03,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8766 to 8750. [2021-11-07 10:33:03,097 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) [2021-11-07 10:33:03,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8750 states to 8750 states and 11328 transitions. [2021-11-07 10:33:03,111 INFO L78 Accepts]: Start accepts. Automaton has 8750 states and 11328 transitions. Word has length 58 [2021-11-07 10:33:03,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:33:03,112 INFO L470 AbstractCegarLoop]: Abstraction has 8750 states and 11328 transitions. [2021-11-07 10:33:03,112 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) [2021-11-07 10:33:03,112 INFO L276 IsEmpty]: Start isEmpty. Operand 8750 states and 11328 transitions. [2021-11-07 10:33:03,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 10:33:03,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:33:03,113 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] [2021-11-07 10:33:03,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 10:33:03,114 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)] === [2021-11-07 10:33:03,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:33:03,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1482038547, now seen corresponding path program 1 times [2021-11-07 10:33:03,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:33:03,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626460571] [2021-11-07 10:33:03,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:33:03,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:33:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:33:03,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:33:03,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:33:03,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626460571] [2021-11-07 10:33:03,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626460571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:33:03,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:33:03,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:33:03,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403936518] [2021-11-07 10:33:03,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:33:03,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:33:03,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:33:03,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:33:03,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:33:03,174 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) [2021-11-07 10:33:06,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:33:06,323 INFO L93 Difference]: Finished difference Result 33275 states and 42756 transitions. [2021-11-07 10:33:06,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:33:06,324 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 [2021-11-07 10:33:06,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:33:06,365 INFO L225 Difference]: With dead ends: 33275 [2021-11-07 10:33:06,365 INFO L226 Difference]: Without dead ends: 24533 [2021-11-07 10:33:06,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.43ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:33:06,383 INFO L933 BasicCegarLoop]: 1140 mSDtfsCounter, 1015 mSDsluCounter, 1640 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 2780 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.61ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.09ms IncrementalHoareTripleChecker+Time [2021-11-07 10:33:06,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 2780 Invalid, 36 Unknown, 0 Unchecked, 3.61ms Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 88.09ms Time] [2021-11-07 10:33:06,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24533 states. [2021-11-07 10:33:07,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24533 to 8814. [2021-11-07 10:33:07,676 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) [2021-11-07 10:33:07,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8814 states to 8814 states and 11392 transitions. [2021-11-07 10:33:07,690 INFO L78 Accepts]: Start accepts. Automaton has 8814 states and 11392 transitions. Word has length 59 [2021-11-07 10:33:07,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:33:07,690 INFO L470 AbstractCegarLoop]: Abstraction has 8814 states and 11392 transitions. [2021-11-07 10:33:07,690 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) [2021-11-07 10:33:07,690 INFO L276 IsEmpty]: Start isEmpty. Operand 8814 states and 11392 transitions. [2021-11-07 10:33:07,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 10:33:07,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:33:07,691 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] [2021-11-07 10:33:07,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 10:33:07,692 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)] === [2021-11-07 10:33:07,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:33:07,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1678973000, now seen corresponding path program 1 times [2021-11-07 10:33:07,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:33:07,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035109490] [2021-11-07 10:33:07,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:33:07,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:33:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:33:07,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:33:07,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:33:07,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035109490] [2021-11-07 10:33:07,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035109490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:33:07,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:33:07,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:33:07,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872489639] [2021-11-07 10:33:07,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:33:07,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:33:07,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:33:07,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:33:07,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:33:07,769 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) [2021-11-07 10:33:11,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:33:11,281 INFO L93 Difference]: Finished difference Result 31078 states and 40126 transitions. [2021-11-07 10:33:11,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:33:11,282 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 [2021-11-07 10:33:11,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:33:11,315 INFO L225 Difference]: With dead ends: 31078 [2021-11-07 10:33:11,315 INFO L226 Difference]: Without dead ends: 23690 [2021-11-07 10:33:11,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.65ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:33:11,327 INFO L933 BasicCegarLoop]: 1396 mSDtfsCounter, 785 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.20ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.05ms IncrementalHoareTripleChecker+Time [2021-11-07 10:33:11,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 3008 Invalid, 29 Unknown, 0 Unchecked, 4.20ms Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 75.05ms Time] [2021-11-07 10:33:11,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23690 states. [2021-11-07 10:33:12,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23690 to 8689. [2021-11-07 10:33:12,575 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) [2021-11-07 10:33:12,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8689 states to 8689 states and 11225 transitions. [2021-11-07 10:33:12,587 INFO L78 Accepts]: Start accepts. Automaton has 8689 states and 11225 transitions. Word has length 59 [2021-11-07 10:33:12,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:33:12,587 INFO L470 AbstractCegarLoop]: Abstraction has 8689 states and 11225 transitions. [2021-11-07 10:33:12,588 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) [2021-11-07 10:33:12,588 INFO L276 IsEmpty]: Start isEmpty. Operand 8689 states and 11225 transitions. [2021-11-07 10:33:12,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 10:33:12,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:33:12,589 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] [2021-11-07 10:33:12,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 10:33:12,589 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)] === [2021-11-07 10:33:12,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:33:12,589 INFO L85 PathProgramCache]: Analyzing trace with hash -940767085, now seen corresponding path program 1 times [2021-11-07 10:33:12,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:33:12,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218500163] [2021-11-07 10:33:12,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:33:12,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:33:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:33:12,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:33:12,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:33:12,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218500163] [2021-11-07 10:33:12,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218500163] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:33:12,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:33:12,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 10:33:12,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697338341] [2021-11-07 10:33:12,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:33:12,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 10:33:12,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:33:12,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 10:33:12,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-07 10:33:12,695 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) [2021-11-07 10:33:19,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:33:19,196 INFO L93 Difference]: Finished difference Result 45877 states and 59552 transitions. [2021-11-07 10:33:19,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-07 10:33:19,197 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 [2021-11-07 10:33:19,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:33:19,256 INFO L225 Difference]: With dead ends: 45877 [2021-11-07 10:33:19,256 INFO L226 Difference]: Without dead ends: 38193 [2021-11-07 10:33:19,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 450.58ms TimeCoverageRelationStatistics Valid=570, Invalid=2082, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 10:33:19,272 INFO L933 BasicCegarLoop]: 1534 mSDtfsCounter, 4237 mSDsluCounter, 4084 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 397.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4237 SdHoareTripleChecker+Valid, 5618 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.16ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 455.80ms IncrementalHoareTripleChecker+Time [2021-11-07 10:33:19,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4237 Valid, 5618 Invalid, 408 Unknown, 0 Unchecked, 11.16ms Time], IncrementalHoareTripleChecker [41 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 455.80ms Time] [2021-11-07 10:33:19,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38193 states. [2021-11-07 10:33:20,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38193 to 8635. [2021-11-07 10:33:20,671 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) [2021-11-07 10:33:20,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8635 states to 8635 states and 11135 transitions. [2021-11-07 10:33:20,682 INFO L78 Accepts]: Start accepts. Automaton has 8635 states and 11135 transitions. Word has length 60 [2021-11-07 10:33:20,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:33:20,682 INFO L470 AbstractCegarLoop]: Abstraction has 8635 states and 11135 transitions. [2021-11-07 10:33:20,682 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) [2021-11-07 10:33:20,682 INFO L276 IsEmpty]: Start isEmpty. Operand 8635 states and 11135 transitions. [2021-11-07 10:33:20,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 10:33:20,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:33:20,683 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] [2021-11-07 10:33:20,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 10:33:20,683 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)] === [2021-11-07 10:33:20,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:33:20,684 INFO L85 PathProgramCache]: Analyzing trace with hash 306863343, now seen corresponding path program 1 times [2021-11-07 10:33:20,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:33:20,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174745734] [2021-11-07 10:33:20,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:33:20,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:33:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:33:20,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:33:20,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:33:20,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174745734] [2021-11-07 10:33:20,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174745734] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 10:33:20,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164637089] [2021-11-07 10:33:20,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:33:20,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:33:20,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:33:20,749 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) [2021-11-07 10:33:20,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 10:33:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:33:21,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 10:33:21,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:33:21,215 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:33:21,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:33:21,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:33:21,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164637089] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 10:33:21,340 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 10:33:21,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-07 10:33:21,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378035660] [2021-11-07 10:33:21,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 10:33:21,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 10:33:21,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:33:21,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 10:33:21,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:33:21,341 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) [2021-11-07 10:33:22,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:33:22,678 INFO L93 Difference]: Finished difference Result 17406 states and 22454 transitions. [2021-11-07 10:33:22,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 10:33:22,678 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 [2021-11-07 10:33:22,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:33:22,690 INFO L225 Difference]: With dead ends: 17406 [2021-11-07 10:33:22,690 INFO L226 Difference]: Without dead ends: 8779 [2021-11-07 10:33:22,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 20.38ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:33:22,699 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 6 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.97ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.64ms IncrementalHoareTripleChecker+Time [2021-11-07 10:33:22,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 997 Invalid, 18 Unknown, 0 Unchecked, 0.97ms Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 12.64ms Time] [2021-11-07 10:33:22,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8779 states. [2021-11-07 10:33:23,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8779 to 8779. [2021-11-07 10:33:23,978 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) [2021-11-07 10:33:23,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8779 states to 8779 states and 11279 transitions. [2021-11-07 10:33:23,989 INFO L78 Accepts]: Start accepts. Automaton has 8779 states and 11279 transitions. Word has length 61 [2021-11-07 10:33:23,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:33:23,989 INFO L470 AbstractCegarLoop]: Abstraction has 8779 states and 11279 transitions. [2021-11-07 10:33:23,989 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) [2021-11-07 10:33:23,989 INFO L276 IsEmpty]: Start isEmpty. Operand 8779 states and 11279 transitions. [2021-11-07 10:33:23,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 10:33:23,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:33:23,990 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] [2021-11-07 10:33:24,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 10:33:24,203 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 [2021-11-07 10:33:24,204 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)] === [2021-11-07 10:33:24,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:33:24,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1699998706, now seen corresponding path program 1 times [2021-11-07 10:33:24,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:33:24,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018323340] [2021-11-07 10:33:24,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:33:24,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:33:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:33:24,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:33:24,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:33:24,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018323340] [2021-11-07 10:33:24,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018323340] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:33:24,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:33:24,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 10:33:24,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788672355] [2021-11-07 10:33:24,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:33:24,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 10:33:24,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:33:24,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 10:33:24,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-07 10:33:24,414 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) [2021-11-07 10:33:29,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:33:29,985 INFO L93 Difference]: Finished difference Result 32486 states and 41796 transitions. [2021-11-07 10:33:29,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-07 10:33:29,986 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 [2021-11-07 10:33:29,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:33:30,033 INFO L225 Difference]: With dead ends: 32486 [2021-11-07 10:33:30,033 INFO L226 Difference]: Without dead ends: 27091 [2021-11-07 10:33:30,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 881 ImplicationChecksByTransitivity, 504.38ms TimeCoverageRelationStatistics Valid=570, Invalid=2082, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 10:33:30,048 INFO L933 BasicCegarLoop]: 1589 mSDtfsCounter, 4337 mSDsluCounter, 6122 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 451.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4337 SdHoareTripleChecker+Valid, 7711 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.66ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 523.31ms IncrementalHoareTripleChecker+Time [2021-11-07 10:33:30,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4337 Valid, 7711 Invalid, 408 Unknown, 0 Unchecked, 14.66ms Time], IncrementalHoareTripleChecker [31 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 523.31ms Time] [2021-11-07 10:33:30,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27091 states. [2021-11-07 10:33:31,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27091 to 8753. [2021-11-07 10:33:31,548 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) [2021-11-07 10:33:31,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8753 states to 8753 states and 11221 transitions. [2021-11-07 10:33:31,560 INFO L78 Accepts]: Start accepts. Automaton has 8753 states and 11221 transitions. Word has length 62 [2021-11-07 10:33:31,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:33:31,560 INFO L470 AbstractCegarLoop]: Abstraction has 8753 states and 11221 transitions. [2021-11-07 10:33:31,561 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) [2021-11-07 10:33:31,561 INFO L276 IsEmpty]: Start isEmpty. Operand 8753 states and 11221 transitions. [2021-11-07 10:33:31,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-07 10:33:31,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:33:31,562 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] [2021-11-07 10:33:31,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-07 10:33:31,562 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)] === [2021-11-07 10:33:31,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:33:31,562 INFO L85 PathProgramCache]: Analyzing trace with hash 905815513, now seen corresponding path program 1 times [2021-11-07 10:33:31,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:33:31,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28649058] [2021-11-07 10:33:31,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:33:31,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:33:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:33:31,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:33:31,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:33:31,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28649058] [2021-11-07 10:33:31,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28649058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:33:31,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:33:31,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 10:33:31,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888109742] [2021-11-07 10:33:31,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:33:31,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 10:33:31,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:33:31,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 10:33:31,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:33:31,629 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) [2021-11-07 10:33:41,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:33:41,594 INFO L93 Difference]: Finished difference Result 56028 states and 73571 transitions. [2021-11-07 10:33:41,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 10:33:41,595 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 [2021-11-07 10:33:41,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:33:41,683 INFO L225 Difference]: With dead ends: 56028 [2021-11-07 10:33:41,684 INFO L226 Difference]: Without dead ends: 50881 [2021-11-07 10:33:41,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 85.27ms TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-07 10:33:41,704 INFO L933 BasicCegarLoop]: 1289 mSDtfsCounter, 5015 mSDsluCounter, 5933 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 211.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5015 SdHoareTripleChecker+Valid, 7222 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.67ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 251.77ms IncrementalHoareTripleChecker+Time [2021-11-07 10:33:41,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5015 Valid, 7222 Invalid, 282 Unknown, 0 Unchecked, 11.67ms Time], IncrementalHoareTripleChecker [19 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 251.77ms Time] [2021-11-07 10:33:41,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50881 states. [2021-11-07 10:33:43,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50881 to 8717. [2021-11-07 10:33:43,468 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) [2021-11-07 10:33:43,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8717 states to 8717 states and 11131 transitions. [2021-11-07 10:33:43,478 INFO L78 Accepts]: Start accepts. Automaton has 8717 states and 11131 transitions. Word has length 63 [2021-11-07 10:33:43,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:33:43,479 INFO L470 AbstractCegarLoop]: Abstraction has 8717 states and 11131 transitions. [2021-11-07 10:33:43,479 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) [2021-11-07 10:33:43,479 INFO L276 IsEmpty]: Start isEmpty. Operand 8717 states and 11131 transitions. [2021-11-07 10:33:43,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 10:33:43,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:33:43,480 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] [2021-11-07 10:33:43,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-07 10:33:43,481 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)] === [2021-11-07 10:33:43,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:33:43,481 INFO L85 PathProgramCache]: Analyzing trace with hash -86443031, now seen corresponding path program 1 times [2021-11-07 10:33:43,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:33:43,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797236372] [2021-11-07 10:33:43,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:33:43,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:33:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 10:33:43,637 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 10:33:43,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 10:33:43,867 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 10:33:43,867 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-07 10:33:43,868 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION (10 of 11 remaining) [2021-11-07 10:33:43,870 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (9 of 11 remaining) [2021-11-07 10:33:43,870 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (8 of 11 remaining) [2021-11-07 10:33:43,870 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (7 of 11 remaining) [2021-11-07 10:33:43,871 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (6 of 11 remaining) [2021-11-07 10:33:43,871 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 11 remaining) [2021-11-07 10:33:43,872 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 11 remaining) [2021-11-07 10:33:43,872 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (3 of 11 remaining) [2021-11-07 10:33:43,872 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (2 of 11 remaining) [2021-11-07 10:33:43,872 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (1 of 11 remaining) [2021-11-07 10:33:43,872 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION (0 of 11 remaining) [2021-11-07 10:33:43,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-07 10:33:43,875 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] [2021-11-07 10:33:43,878 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 10:33:44,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 10:33:44 BoogieIcfgContainer [2021-11-07 10:33:44,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 10:33:44,030 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 10:33:44,030 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 10:33:44,031 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 10:33:44,031 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:32:29" (3/4) ... [2021-11-07 10:33:44,033 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 10:33:44,033 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 10:33:44,033 INFO L158 Benchmark]: Toolchain (without parser) took 79282.12ms. Allocated memory was 107.0MB in the beginning and 3.5GB in the end (delta: 3.4GB). Free memory was 70.3MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 552.8MB. Max. memory is 16.1GB. [2021-11-07 10:33:44,033 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 107.0MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-07 10:33:44,034 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1523.81ms. Allocated memory was 107.0MB in the beginning and 157.3MB in the end (delta: 50.3MB). Free memory was 70.0MB in the beginning and 69.2MB in the end (delta: 846.1kB). Peak memory consumption was 64.6MB. Max. memory is 16.1GB. [2021-11-07 10:33:44,034 INFO L158 Benchmark]: Boogie Procedure Inliner took 151.87ms. Allocated memory was 157.3MB in the beginning and 245.4MB in the end (delta: 88.1MB). Free memory was 69.2MB in the beginning and 188.7MB in the end (delta: -119.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-07 10:33:44,034 INFO L158 Benchmark]: Boogie Preprocessor took 125.40ms. Allocated memory is still 245.4MB. Free memory was 188.7MB in the beginning and 174.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-07 10:33:44,035 INFO L158 Benchmark]: RCFGBuilder took 3213.43ms. Allocated memory is still 245.4MB. Free memory was 174.0MB in the beginning and 85.6MB in the end (delta: 88.4MB). Peak memory consumption was 96.8MB. Max. memory is 16.1GB. [2021-11-07 10:33:44,035 INFO L158 Benchmark]: TraceAbstraction took 74258.59ms. Allocated memory was 245.4MB in the beginning and 3.5GB in the end (delta: 3.2GB). Free memory was 85.6MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 427.2MB. Max. memory is 16.1GB. [2021-11-07 10:33:44,035 INFO L158 Benchmark]: Witness Printer took 2.63ms. Allocated memory is still 3.5GB. Free memory was 2.9GB in the beginning and 2.9GB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-07 10:33:44,044 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 107.0MB. Free memory is still 64.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1523.81ms. Allocated memory was 107.0MB in the beginning and 157.3MB in the end (delta: 50.3MB). Free memory was 70.0MB in the beginning and 69.2MB in the end (delta: 846.1kB). Peak memory consumption was 64.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 151.87ms. Allocated memory was 157.3MB in the beginning and 245.4MB in the end (delta: 88.1MB). Free memory was 69.2MB in the beginning and 188.7MB in the end (delta: -119.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 125.40ms. Allocated memory is still 245.4MB. Free memory was 188.7MB in the beginning and 174.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * RCFGBuilder took 3213.43ms. Allocated memory is still 245.4MB. Free memory was 174.0MB in the beginning and 85.6MB in the end (delta: 88.4MB). Peak memory consumption was 96.8MB. Max. memory is 16.1GB. * TraceAbstraction took 74258.59ms. Allocated memory was 245.4MB in the beginning and 3.5GB in the end (delta: 3.2GB). Free memory was 85.6MB in the beginning and 2.9GB in the end (delta: -2.8GB). Peak memory consumption was 427.2MB. Max. memory is 16.1GB. * Witness Printer took 2.63ms. Allocated memory is still 3.5GB. Free memory was 2.9GB in the beginning and 2.9GB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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: 74058.81ms, OverallIterations: 29, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 44.65ms, AutomataDifference: 52599.70ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 12.95ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45321 SdHoareTripleChecker+Valid, 6234.11ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 45321 mSDsluCounter, 93134 SdHoareTripleChecker+Invalid, 5508.29ms 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, 153.84ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 551 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2942 ImplicationChecksByTransitivity, 2126.02ms 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: 17173.89ms AutomataMinimizationTime, 28 MinimizatonAttempts, 211860 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 178.89ms SsaConstructionTime, 1181.33ms SatisfiabilityAnalysisTime, 1817.43ms 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 [2021-11-07 10:33:44,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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-5b36d44 [2021-11-07 10:33:46,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 10:33:46,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 10:33:46,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 10:33:46,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 10:33:46,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 10:33:46,143 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 10:33:46,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 10:33:46,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 10:33:46,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 10:33:46,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 10:33:46,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 10:33:46,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 10:33:46,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 10:33:46,153 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 10:33:46,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 10:33:46,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 10:33:46,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 10:33:46,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 10:33:46,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 10:33:46,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 10:33:46,162 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 10:33:46,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 10:33:46,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 10:33:46,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 10:33:46,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 10:33:46,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 10:33:46,167 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 10:33:46,167 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 10:33:46,168 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 10:33:46,168 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 10:33:46,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 10:33:46,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 10:33:46,175 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 10:33:46,176 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 10:33:46,176 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 10:33:46,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 10:33:46,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 10:33:46,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 10:33:46,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 10:33:46,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 10:33:46,183 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-07 10:33:46,213 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 10:33:46,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 10:33:46,215 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 10:33:46,215 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 10:33:46,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 10:33:46,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 10:33:46,216 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 10:33:46,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 10:33:46,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 10:33:46,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 10:33:46,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 10:33:46,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 10:33:46,218 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 10:33:46,218 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 10:33:46,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 10:33:46,218 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 10:33:46,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 10:33:46,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 10:33:46,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 10:33:46,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 10:33:46,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 10:33:46,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 10:33:46,219 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 10:33:46,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 10:33:46,219 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 10:33:46,219 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 10:33:46,219 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 10:33:46,220 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 10:33:46,220 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 10:33:46,220 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 10:33:46,220 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 10:33:46,220 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01d4ebb86f2bde0df0d47bbd5d9b632b620f2501e68770553e85fb2bb5a7d15a [2021-11-07 10:33:46,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 10:33:46,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 10:33:46,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 10:33:46,527 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 10:33:46,530 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 10:33:46,532 INFO L432 ainManager$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 [2021-11-07 10:33:46,613 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/146653576/1623e0afe1f1409c97a2383b959c1e08/FLAG8f2fe7c08 [2021-11-07 10:33:47,204 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 10:33:47,205 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 [2021-11-07 10:33:47,232 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/146653576/1623e0afe1f1409c97a2383b959c1e08/FLAG8f2fe7c08 [2021-11-07 10:33:47,382 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/146653576/1623e0afe1f1409c97a2383b959c1e08 [2021-11-07 10:33:47,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 10:33:47,385 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 10:33:47,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 10:33:47,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 10:33:47,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 10:33:47,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:33:47" (1/1) ... [2021-11-07 10:33:47,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38b10785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:33:47, skipping insertion in model container [2021-11-07 10:33:47,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:33:47" (1/1) ... [2021-11-07 10:33:47,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 10:33:47,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 10:33:48,349 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] [2021-11-07 10:33:48,375 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 10:33:48,406 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 10:33:48,628 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] [2021-11-07 10:33:48,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 10:33:48,784 INFO L208 MainTranslator]: Completed translation [2021-11-07 10:33:48,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:33:48 WrapperNode [2021-11-07 10:33:48,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 10:33:48,786 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 10:33:48,786 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 10:33:48,786 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 10:33:48,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:33:48" (1/1) ... [2021-11-07 10:33:48,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:33:48" (1/1) ... [2021-11-07 10:33:48,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 10:33:48,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 10:33:48,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 10:33:48,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 10:33:48,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:33:48" (1/1) ... [2021-11-07 10:33:48,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:33:48" (1/1) ... [2021-11-07 10:33:48,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:33:48" (1/1) ... [2021-11-07 10:33:48,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:33:48" (1/1) ... [2021-11-07 10:33:49,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:33:48" (1/1) ... [2021-11-07 10:33:49,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:33:48" (1/1) ... [2021-11-07 10:33:49,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:33:48" (1/1) ... [2021-11-07 10:33:49,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 10:33:49,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 10:33:49,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 10:33:49,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 10:33:49,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:33:48" (1/1) ... [2021-11-07 10:33:49,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 10:33:49,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:33:49,101 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) [2021-11-07 10:33:49,103 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 [2021-11-07 10:33:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 10:33:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 10:33:49,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 10:33:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 10:33:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 10:33:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 10:33:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 10:33:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 10:33:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 10:33:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 10:33:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 10:33:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 10:33:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 10:33:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 10:33:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 10:33:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 10:33:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 10:33:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 10:33:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 10:33:49,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 10:33:49,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 10:33:49,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 10:33:49,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 10:33:49,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 10:33:49,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 10:33:49,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 10:33:49,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 10:33:49,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 10:33:49,490 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 10:34:06,549 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume !false; [2021-11-07 10:34:06,549 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume false; [2021-11-07 10:34:06,556 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 10:34:06,556 INFO L299 CfgBuilder]: Removed 434 assume(true) statements. [2021-11-07 10:34:06,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:34:06 BoogieIcfgContainer [2021-11-07 10:34:06,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 10:34:06,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 10:34:06,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 10:34:06,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 10:34:06,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:33:47" (1/3) ... [2021-11-07 10:34:06,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3142fe16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:34:06, skipping insertion in model container [2021-11-07 10:34:06,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:33:48" (2/3) ... [2021-11-07 10:34:06,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3142fe16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:34:06, skipping insertion in model container [2021-11-07 10:34:06,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:34:06" (3/3) ... [2021-11-07 10:34:06,565 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-net-can-usb-ems_usb.ko.cil.out.i [2021-11-07 10:34:06,569 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 10:34:06,569 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-07 10:34:06,608 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 10:34:06,613 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 [2021-11-07 10:34:06,614 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-07 10:34:06,629 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) [2021-11-07 10:34:06,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 10:34:06,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:34:06,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:34:06,633 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)] === [2021-11-07 10:34:06,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:34:06,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1465825715, now seen corresponding path program 1 times [2021-11-07 10:34:06,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:34:06,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [534300932] [2021-11-07 10:34:06,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:34:06,648 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:34:06,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:34:06,650 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) [2021-11-07 10:34:06,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 10:34:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:34:07,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 10:34:07,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:34:07,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:07,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:34:07,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:07,463 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:34:07,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [534300932] [2021-11-07 10:34:07,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [534300932] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:34:07,464 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:34:07,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 10:34:07,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617821818] [2021-11-07 10:34:07,466 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:34:07,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 10:34:07,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:34:07,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 10:34:07,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:34:07,514 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) [2021-11-07 10:34:07,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:34:07,814 INFO L93 Difference]: Finished difference Result 1189 states and 1749 transitions. [2021-11-07 10:34:07,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 10:34:07,817 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 [2021-11-07 10:34:07,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:34:07,832 INFO L225 Difference]: With dead ends: 1189 [2021-11-07 10:34:07,833 INFO L226 Difference]: Without dead ends: 765 [2021-11-07 10:34:07,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:34:07,840 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 503 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 188.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.07ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 215.87ms IncrementalHoareTripleChecker+Time [2021-11-07 10:34:07,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 1007 Invalid, 39 Unknown, 0 Unchecked, 8.07ms Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 215.87ms Time] [2021-11-07 10:34:07,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2021-11-07 10:34:07,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 747. [2021-11-07 10:34:07,908 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) [2021-11-07 10:34:07,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 977 transitions. [2021-11-07 10:34:07,911 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 977 transitions. Word has length 10 [2021-11-07 10:34:07,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:34:07,911 INFO L470 AbstractCegarLoop]: Abstraction has 747 states and 977 transitions. [2021-11-07 10:34:07,912 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) [2021-11-07 10:34:07,912 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 977 transitions. [2021-11-07 10:34:07,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 10:34:07,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:34:07,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:34:07,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 10:34:08,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:34:08,124 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)] === [2021-11-07 10:34:08,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:34:08,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1804042980, now seen corresponding path program 1 times [2021-11-07 10:34:08,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:34:08,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765546042] [2021-11-07 10:34:08,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:34:08,126 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:34:08,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:34:08,127 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) [2021-11-07 10:34:08,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 10:34:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:34:08,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 10:34:08,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:34:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:08,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:34:08,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:08,812 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:34:08,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765546042] [2021-11-07 10:34:08,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765546042] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:34:08,812 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:34:08,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 10:34:08,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499896882] [2021-11-07 10:34:08,812 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:34:08,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 10:34:08,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:34:08,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 10:34:08,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:34:08,814 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) [2021-11-07 10:34:08,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:34:08,994 INFO L93 Difference]: Finished difference Result 2217 states and 2904 transitions. [2021-11-07 10:34:08,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 10:34:08,994 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 [2021-11-07 10:34:08,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:34:09,000 INFO L225 Difference]: With dead ends: 2217 [2021-11-07 10:34:09,000 INFO L226 Difference]: Without dead ends: 1475 [2021-11-07 10:34:09,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.82ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:34:09,002 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 487 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 95.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.84ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 140.21ms IncrementalHoareTripleChecker+Time [2021-11-07 10:34:09,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 985 Invalid, 20 Unknown, 0 Unchecked, 2.84ms Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 140.21ms Time] [2021-11-07 10:34:09,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2021-11-07 10:34:09,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1446. [2021-11-07 10:34:09,056 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) [2021-11-07 10:34:09,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 1903 transitions. [2021-11-07 10:34:09,059 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 1903 transitions. Word has length 11 [2021-11-07 10:34:09,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:34:09,060 INFO L470 AbstractCegarLoop]: Abstraction has 1446 states and 1903 transitions. [2021-11-07 10:34:09,060 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) [2021-11-07 10:34:09,060 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 1903 transitions. [2021-11-07 10:34:09,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 10:34:09,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:34:09,063 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] [2021-11-07 10:34:09,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 10:34:09,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:34:09,282 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)] === [2021-11-07 10:34:09,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:34:09,282 INFO L85 PathProgramCache]: Analyzing trace with hash 739890622, now seen corresponding path program 1 times [2021-11-07 10:34:09,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:34:09,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824749527] [2021-11-07 10:34:09,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:34:09,284 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:34:09,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:34:09,284 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) [2021-11-07 10:34:09,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 10:34:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:34:09,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 10:34:09,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:34:10,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:10,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:34:10,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:10,338 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:34:10,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824749527] [2021-11-07 10:34:10,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824749527] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:34:10,339 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:34:10,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 10:34:10,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087693184] [2021-11-07 10:34:10,339 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:34:10,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:34:10,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:34:10,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:34:10,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:34:10,340 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) [2021-11-07 10:34:10,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:34:10,467 INFO L93 Difference]: Finished difference Result 2886 states and 3799 transitions. [2021-11-07 10:34:10,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:34:10,468 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 [2021-11-07 10:34:10,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:34:10,472 INFO L225 Difference]: With dead ends: 2886 [2021-11-07 10:34:10,472 INFO L226 Difference]: Without dead ends: 1446 [2021-11-07 10:34:10,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 92.94ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:34:10,476 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 1 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.20ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.26ms IncrementalHoareTripleChecker+Time [2021-11-07 10:34:10,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1507 Invalid, 7 Unknown, 0 Unchecked, 2.20ms Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 40.26ms Time] [2021-11-07 10:34:10,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2021-11-07 10:34:10,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1446. [2021-11-07 10:34:10,509 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) [2021-11-07 10:34:10,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 1902 transitions. [2021-11-07 10:34:10,512 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 1902 transitions. Word has length 38 [2021-11-07 10:34:10,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:34:10,513 INFO L470 AbstractCegarLoop]: Abstraction has 1446 states and 1902 transitions. [2021-11-07 10:34:10,513 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) [2021-11-07 10:34:10,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 1902 transitions. [2021-11-07 10:34:10,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 10:34:10,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:34:10,517 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] [2021-11-07 10:34:10,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 10:34:10,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:34:10,732 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)] === [2021-11-07 10:34:10,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:34:10,732 INFO L85 PathProgramCache]: Analyzing trace with hash 667504064, now seen corresponding path program 1 times [2021-11-07 10:34:10,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:34:10,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362222727] [2021-11-07 10:34:10,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:34:10,733 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:34:10,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:34:10,735 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) [2021-11-07 10:34:10,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 10:34:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:34:11,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 10:34:11,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:34:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:11,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:34:11,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:11,707 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:34:11,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362222727] [2021-11-07 10:34:11,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362222727] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:34:11,709 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:34:11,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 10:34:11,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551765134] [2021-11-07 10:34:11,709 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:34:11,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:34:11,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:34:11,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:34:11,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:34:11,710 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) [2021-11-07 10:34:11,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:34:11,894 INFO L93 Difference]: Finished difference Result 4964 states and 6618 transitions. [2021-11-07 10:34:11,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:34:11,894 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 [2021-11-07 10:34:11,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:34:11,906 INFO L225 Difference]: With dead ends: 4964 [2021-11-07 10:34:11,906 INFO L226 Difference]: Without dead ends: 3525 [2021-11-07 10:34:11,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.71ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:34:11,912 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 1264 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.74ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97.87ms IncrementalHoareTripleChecker+Time [2021-11-07 10:34:11,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1264 Valid, 1265 Invalid, 24 Unknown, 0 Unchecked, 3.74ms Time], IncrementalHoareTripleChecker [9 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 97.87ms Time] [2021-11-07 10:34:11,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3525 states. [2021-11-07 10:34:12,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3525 to 3461. [2021-11-07 10:34:12,029 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) [2021-11-07 10:34:12,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3461 states to 3461 states and 4659 transitions. [2021-11-07 10:34:12,037 INFO L78 Accepts]: Start accepts. Automaton has 3461 states and 4659 transitions. Word has length 38 [2021-11-07 10:34:12,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:34:12,038 INFO L470 AbstractCegarLoop]: Abstraction has 3461 states and 4659 transitions. [2021-11-07 10:34:12,038 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) [2021-11-07 10:34:12,038 INFO L276 IsEmpty]: Start isEmpty. Operand 3461 states and 4659 transitions. [2021-11-07 10:34:12,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 10:34:12,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:34:12,045 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] [2021-11-07 10:34:12,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 10:34:12,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:34:12,263 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)] === [2021-11-07 10:34:12,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:34:12,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1703756643, now seen corresponding path program 1 times [2021-11-07 10:34:12,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:34:12,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658184237] [2021-11-07 10:34:12,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:34:12,265 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:34:12,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:34:12,266 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) [2021-11-07 10:34:12,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 10:34:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:34:12,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 10:34:12,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:34:12,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:12,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:34:13,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:13,161 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:34:13,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658184237] [2021-11-07 10:34:13,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658184237] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:34:13,161 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:34:13,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 10:34:13,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019127623] [2021-11-07 10:34:13,162 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:34:13,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 10:34:13,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:34:13,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 10:34:13,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 10:34:13,163 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) [2021-11-07 10:34:13,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:34:13,553 INFO L93 Difference]: Finished difference Result 13736 states and 18468 transitions. [2021-11-07 10:34:13,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:34:13,555 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 [2021-11-07 10:34:13,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:34:13,586 INFO L225 Difference]: With dead ends: 13736 [2021-11-07 10:34:13,586 INFO L226 Difference]: Without dead ends: 10283 [2021-11-07 10:34:13,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 163.74ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:34:13,593 INFO L933 BasicCegarLoop]: 861 mSDtfsCounter, 2446 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2446 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.91ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85.88ms IncrementalHoareTripleChecker+Time [2021-11-07 10:34:13,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2446 Valid, 2834 Invalid, 14 Unknown, 0 Unchecked, 5.91ms Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 85.88ms Time] [2021-11-07 10:34:13,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10283 states. [2021-11-07 10:34:13,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10283 to 3485. [2021-11-07 10:34:13,775 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) [2021-11-07 10:34:13,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3485 states to 3485 states and 4683 transitions. [2021-11-07 10:34:13,782 INFO L78 Accepts]: Start accepts. Automaton has 3485 states and 4683 transitions. Word has length 41 [2021-11-07 10:34:13,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:34:13,782 INFO L470 AbstractCegarLoop]: Abstraction has 3485 states and 4683 transitions. [2021-11-07 10:34:13,782 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) [2021-11-07 10:34:13,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3485 states and 4683 transitions. [2021-11-07 10:34:13,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 10:34:13,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:34:13,783 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] [2021-11-07 10:34:13,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 10:34:13,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:34:13,997 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)] === [2021-11-07 10:34:13,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:34:13,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1337408933, now seen corresponding path program 1 times [2021-11-07 10:34:13,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:34:13,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710911286] [2021-11-07 10:34:13,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:34:13,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:34:13,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:34:13,999 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) [2021-11-07 10:34:14,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 10:34:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:34:14,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 10:34:14,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:34:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:14,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:34:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:14,857 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:34:14,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710911286] [2021-11-07 10:34:14,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710911286] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:34:14,857 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:34:14,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 10:34:14,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887859259] [2021-11-07 10:34:14,857 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:34:14,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 10:34:14,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:34:14,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 10:34:14,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 10:34:14,858 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) [2021-11-07 10:34:15,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:34:15,355 INFO L93 Difference]: Finished difference Result 11840 states and 15908 transitions. [2021-11-07 10:34:15,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:34:15,357 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 [2021-11-07 10:34:15,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:34:15,387 INFO L225 Difference]: With dead ends: 11840 [2021-11-07 10:34:15,388 INFO L226 Difference]: Without dead ends: 8363 [2021-11-07 10:34:15,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 160.85ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:34:15,395 INFO L933 BasicCegarLoop]: 872 mSDtfsCounter, 1481 mSDsluCounter, 2608 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 3480 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.58ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 96.84ms IncrementalHoareTripleChecker+Time [2021-11-07 10:34:15,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1481 Valid, 3480 Invalid, 16 Unknown, 0 Unchecked, 5.58ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 96.84ms Time] [2021-11-07 10:34:15,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8363 states. [2021-11-07 10:34:15,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8363 to 3509. [2021-11-07 10:34:15,589 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) [2021-11-07 10:34:15,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3509 states to 3509 states and 4707 transitions. [2021-11-07 10:34:15,597 INFO L78 Accepts]: Start accepts. Automaton has 3509 states and 4707 transitions. Word has length 42 [2021-11-07 10:34:15,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:34:15,597 INFO L470 AbstractCegarLoop]: Abstraction has 3509 states and 4707 transitions. [2021-11-07 10:34:15,597 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) [2021-11-07 10:34:15,598 INFO L276 IsEmpty]: Start isEmpty. Operand 3509 states and 4707 transitions. [2021-11-07 10:34:15,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 10:34:15,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:34:15,599 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] [2021-11-07 10:34:15,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 10:34:15,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:34:15,816 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)] === [2021-11-07 10:34:15,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:34:15,816 INFO L85 PathProgramCache]: Analyzing trace with hash -283318246, now seen corresponding path program 1 times [2021-11-07 10:34:15,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:34:15,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093634640] [2021-11-07 10:34:15,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:34:15,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:34:15,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:34:15,818 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) [2021-11-07 10:34:15,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 10:34:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:34:16,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 10:34:16,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:34:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:16,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:34:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:16,721 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:34:16,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093634640] [2021-11-07 10:34:16,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093634640] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:34:16,722 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:34:16,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 10:34:16,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430427553] [2021-11-07 10:34:16,722 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:34:16,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:34:16,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:34:16,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:34:16,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:34:16,723 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) [2021-11-07 10:34:18,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:34:18,524 INFO L93 Difference]: Finished difference Result 19088 states and 25593 transitions. [2021-11-07 10:34:18,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 10:34:18,525 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 [2021-11-07 10:34:18,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:34:18,565 INFO L225 Difference]: With dead ends: 19088 [2021-11-07 10:34:18,565 INFO L226 Difference]: Without dead ends: 17298 [2021-11-07 10:34:18,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 429.86ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 10:34:18,575 INFO L933 BasicCegarLoop]: 1055 mSDtfsCounter, 3034 mSDsluCounter, 3154 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 651.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3034 SdHoareTripleChecker+Valid, 4209 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.02ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 718.65ms IncrementalHoareTripleChecker+Time [2021-11-07 10:34:18,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3034 Valid, 4209 Invalid, 144 Unknown, 0 Unchecked, 11.02ms Time], IncrementalHoareTripleChecker [25 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 718.65ms Time] [2021-11-07 10:34:18,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17298 states. [2021-11-07 10:34:18,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17298 to 3593. [2021-11-07 10:34:18,860 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) [2021-11-07 10:34:18,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 4791 transitions. [2021-11-07 10:34:18,891 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 4791 transitions. Word has length 42 [2021-11-07 10:34:18,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:34:18,891 INFO L470 AbstractCegarLoop]: Abstraction has 3593 states and 4791 transitions. [2021-11-07 10:34:18,892 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) [2021-11-07 10:34:18,892 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 4791 transitions. [2021-11-07 10:34:18,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 10:34:18,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:34:18,893 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] [2021-11-07 10:34:18,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 10:34:19,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:34:19,114 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)] === [2021-11-07 10:34:19,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:34:19,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1871666148, now seen corresponding path program 1 times [2021-11-07 10:34:19,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:34:19,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375377670] [2021-11-07 10:34:19,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:34:19,116 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:34:19,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:34:19,116 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) [2021-11-07 10:34:19,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 10:34:19,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:34:19,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 10:34:19,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:34:19,866 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:19,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:34:20,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:20,004 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:34:20,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375377670] [2021-11-07 10:34:20,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375377670] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:34:20,005 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:34:20,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-07 10:34:20,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883311121] [2021-11-07 10:34:20,005 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:34:20,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 10:34:20,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:34:20,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 10:34:20,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:34:20,006 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) [2021-11-07 10:34:26,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:34:26,823 INFO L93 Difference]: Finished difference Result 27795 states and 37313 transitions. [2021-11-07 10:34:26,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 10:34:26,824 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 [2021-11-07 10:34:26,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:34:26,859 INFO L225 Difference]: With dead ends: 27795 [2021-11-07 10:34:26,859 INFO L226 Difference]: Without dead ends: 24210 [2021-11-07 10:34:26,870 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 1071.10ms TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-07 10:34:26,870 INFO L933 BasicCegarLoop]: 2469 mSDtfsCounter, 4259 mSDsluCounter, 8564 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4037.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4259 SdHoareTripleChecker+Valid, 11033 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.05ms SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4247.52ms IncrementalHoareTripleChecker+Time [2021-11-07 10:34:26,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4259 Valid, 11033 Invalid, 396 Unknown, 0 Unchecked, 15.05ms Time], IncrementalHoareTripleChecker [21 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 4247.52ms Time] [2021-11-07 10:34:26,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24210 states. [2021-11-07 10:34:27,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24210 to 3563. [2021-11-07 10:34:27,358 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) [2021-11-07 10:34:27,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3563 states to 3563 states and 4733 transitions. [2021-11-07 10:34:27,362 INFO L78 Accepts]: Start accepts. Automaton has 3563 states and 4733 transitions. Word has length 42 [2021-11-07 10:34:27,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:34:27,363 INFO L470 AbstractCegarLoop]: Abstraction has 3563 states and 4733 transitions. [2021-11-07 10:34:27,363 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) [2021-11-07 10:34:27,363 INFO L276 IsEmpty]: Start isEmpty. Operand 3563 states and 4733 transitions. [2021-11-07 10:34:27,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 10:34:27,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:34:27,364 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] [2021-11-07 10:34:27,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-07 10:34:27,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:34:27,579 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)] === [2021-11-07 10:34:27,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:34:27,580 INFO L85 PathProgramCache]: Analyzing trace with hash 567062686, now seen corresponding path program 1 times [2021-11-07 10:34:27,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:34:27,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765779359] [2021-11-07 10:34:27,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:34:27,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:34:27,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:34:27,581 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) [2021-11-07 10:34:27,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 10:34:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:34:27,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 10:34:28,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:34:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:28,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:34:28,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:28,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:34:28,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765779359] [2021-11-07 10:34:28,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765779359] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:34:28,408 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:34:28,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 10:34:28,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794530714] [2021-11-07 10:34:28,408 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:34:28,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:34:28,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:34:28,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:34:28,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:34:28,409 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) [2021-11-07 10:34:30,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:34:30,292 INFO L93 Difference]: Finished difference Result 12089 states and 16109 transitions. [2021-11-07 10:34:30,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:34:30,294 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 [2021-11-07 10:34:30,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:34:30,307 INFO L225 Difference]: With dead ends: 12089 [2021-11-07 10:34:30,307 INFO L226 Difference]: Without dead ends: 8534 [2021-11-07 10:34:30,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 156.42ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:34:30,312 INFO L933 BasicCegarLoop]: 1025 mSDtfsCounter, 1250 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 975.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 2683 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.61ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1016.61ms IncrementalHoareTripleChecker+Time [2021-11-07 10:34:30,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1250 Valid, 2683 Invalid, 39 Unknown, 0 Unchecked, 3.61ms Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 1016.61ms Time] [2021-11-07 10:34:30,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8534 states. [2021-11-07 10:34:30,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8534 to 3171. [2021-11-07 10:34:30,632 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) [2021-11-07 10:34:30,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 4191 transitions. [2021-11-07 10:34:30,636 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 4191 transitions. Word has length 44 [2021-11-07 10:34:30,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:34:30,636 INFO L470 AbstractCegarLoop]: Abstraction has 3171 states and 4191 transitions. [2021-11-07 10:34:30,636 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) [2021-11-07 10:34:30,636 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 4191 transitions. [2021-11-07 10:34:30,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 10:34:30,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:34:30,637 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] [2021-11-07 10:34:30,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 10:34:30,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:34:30,837 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)] === [2021-11-07 10:34:30,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:34:30,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2142949410, now seen corresponding path program 1 times [2021-11-07 10:34:30,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:34:30,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914152016] [2021-11-07 10:34:30,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:34:30,839 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:34:30,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:34:30,840 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) [2021-11-07 10:34:30,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 10:34:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:34:31,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 10:34:31,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:34:31,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:31,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:34:32,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:32,437 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:34:32,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914152016] [2021-11-07 10:34:32,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914152016] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:34:32,437 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:34:32,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 10:34:32,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807492966] [2021-11-07 10:34:32,438 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:34:32,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 10:34:32,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:34:32,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 10:34:32,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-07 10:34:32,438 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) [2021-11-07 10:34:34,497 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 [] [2021-11-07 10:34:36,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:34:36,332 INFO L93 Difference]: Finished difference Result 13252 states and 17567 transitions. [2021-11-07 10:34:36,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 10:34:36,333 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 [2021-11-07 10:34:36,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:34:36,349 INFO L225 Difference]: With dead ends: 13252 [2021-11-07 10:34:36,349 INFO L226 Difference]: Without dead ends: 11405 [2021-11-07 10:34:36,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 184.16ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:34:36,355 INFO L933 BasicCegarLoop]: 854 mSDtfsCounter, 3458 mSDsluCounter, 1887 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 74 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2632.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3458 SdHoareTripleChecker+Valid, 2741 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.72ms SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2706.44ms IncrementalHoareTripleChecker+Time [2021-11-07 10:34:36,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3458 Valid, 2741 Invalid, 167 Unknown, 0 Unchecked, 5.72ms Time], IncrementalHoareTripleChecker [74 Valid, 92 Invalid, 1 Unknown, 0 Unchecked, 2706.44ms Time] [2021-11-07 10:34:36,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11405 states. [2021-11-07 10:34:37,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11405 to 9847. [2021-11-07 10:34:37,305 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) [2021-11-07 10:34:37,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9847 states to 9847 states and 13029 transitions. [2021-11-07 10:34:37,319 INFO L78 Accepts]: Start accepts. Automaton has 9847 states and 13029 transitions. Word has length 44 [2021-11-07 10:34:37,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:34:37,319 INFO L470 AbstractCegarLoop]: Abstraction has 9847 states and 13029 transitions. [2021-11-07 10:34:37,320 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) [2021-11-07 10:34:37,320 INFO L276 IsEmpty]: Start isEmpty. Operand 9847 states and 13029 transitions. [2021-11-07 10:34:37,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 10:34:37,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:34:37,321 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] [2021-11-07 10:34:37,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 10:34:37,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:34:37,523 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)] === [2021-11-07 10:34:37,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:34:37,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1537453454, now seen corresponding path program 1 times [2021-11-07 10:34:37,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:34:37,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343223177] [2021-11-07 10:34:37,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:34:37,525 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:34:37,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:34:37,526 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) [2021-11-07 10:34:37,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 10:34:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:34:37,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 10:34:37,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:34:38,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:38,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:34:38,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:38,455 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:34:38,455 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343223177] [2021-11-07 10:34:38,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343223177] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:34:38,455 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:34:38,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 10:34:38,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627636311] [2021-11-07 10:34:38,455 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:34:38,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:34:38,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:34:38,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:34:38,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:34:38,456 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) [2021-11-07 10:34:39,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:34:39,888 INFO L93 Difference]: Finished difference Result 20142 states and 26962 transitions. [2021-11-07 10:34:39,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:34:39,889 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 [2021-11-07 10:34:39,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:34:39,902 INFO L225 Difference]: With dead ends: 20142 [2021-11-07 10:34:39,902 INFO L226 Difference]: Without dead ends: 10303 [2021-11-07 10:34:39,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 70.34ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:34:39,913 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 0 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 265.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.33ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 317.50ms IncrementalHoareTripleChecker+Time [2021-11-07 10:34:39,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1463 Invalid, 60 Unknown, 0 Unchecked, 1.33ms Time], IncrementalHoareTripleChecker [25 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 317.50ms Time] [2021-11-07 10:34:39,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10303 states. [2021-11-07 10:34:40,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10303 to 10303. [2021-11-07 10:34:40,912 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) [2021-11-07 10:34:40,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10303 states to 10303 states and 13485 transitions. [2021-11-07 10:34:40,931 INFO L78 Accepts]: Start accepts. Automaton has 10303 states and 13485 transitions. Word has length 47 [2021-11-07 10:34:40,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:34:40,931 INFO L470 AbstractCegarLoop]: Abstraction has 10303 states and 13485 transitions. [2021-11-07 10:34:40,931 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) [2021-11-07 10:34:40,931 INFO L276 IsEmpty]: Start isEmpty. Operand 10303 states and 13485 transitions. [2021-11-07 10:34:40,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 10:34:40,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:34:40,933 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] [2021-11-07 10:34:40,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 10:34:41,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:34:41,152 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)] === [2021-11-07 10:34:41,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:34:41,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1909705166, now seen corresponding path program 1 times [2021-11-07 10:34:41,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:34:41,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336727344] [2021-11-07 10:34:41,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:34:41,153 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:34:41,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:34:41,162 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) [2021-11-07 10:34:41,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 10:34:41,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:34:41,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 10:34:41,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:34:42,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:42,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:34:42,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:34:42,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:34:42,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336727344] [2021-11-07 10:34:42,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336727344] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 10:34:42,604 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 10:34:42,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-07 10:34:42,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475892528] [2021-11-07 10:34:42,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-07 10:34:42,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 10:34:42,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:34:42,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 10:34:42,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-07 10:34:42,609 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) [2021-11-07 10:34:44,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:34:44,839 INFO L93 Difference]: Finished difference Result 21054 states and 27874 transitions. [2021-11-07 10:34:44,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 10:34:44,840 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 [2021-11-07 10:34:44,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:34:44,853 INFO L225 Difference]: With dead ends: 21054 [2021-11-07 10:34:44,853 INFO L226 Difference]: Without dead ends: 10759 [2021-11-07 10:34:44,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 492.52ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-07 10:34:44,864 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 0 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 841.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2429 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.53ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 959.80ms IncrementalHoareTripleChecker+Time [2021-11-07 10:34:44,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2429 Invalid, 176 Unknown, 0 Unchecked, 2.53ms Time], IncrementalHoareTripleChecker [57 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 959.80ms Time] [2021-11-07 10:34:44,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10759 states. [2021-11-07 10:34:45,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10759 to 10759. [2021-11-07 10:34:45,956 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) [2021-11-07 10:34:45,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10759 states to 10759 states and 13941 transitions. [2021-11-07 10:34:45,973 INFO L78 Accepts]: Start accepts. Automaton has 10759 states and 13941 transitions. Word has length 49 [2021-11-07 10:34:45,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:34:45,973 INFO L470 AbstractCegarLoop]: Abstraction has 10759 states and 13941 transitions. [2021-11-07 10:34:45,973 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) [2021-11-07 10:34:45,974 INFO L276 IsEmpty]: Start isEmpty. Operand 10759 states and 13941 transitions. [2021-11-07 10:34:45,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 10:34:45,975 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:34:45,975 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] [2021-11-07 10:34:45,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 10:34:46,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:34:46,192 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)] === [2021-11-07 10:34:46,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:34:46,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1133652466, now seen corresponding path program 2 times [2021-11-07 10:34:46,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:34:46,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944615252] [2021-11-07 10:34:46,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 10:34:46,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:34:46,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:34:46,194 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) [2021-11-07 10:34:46,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 10:34:46,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 10:34:46,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 10:34:46,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 10:34:46,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:34:47,031 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 10:34:47,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:34:47,189 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 10:34:47,190 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:34:47,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944615252] [2021-11-07 10:34:47,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944615252] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:34:47,190 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:34:47,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-07 10:34:47,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750961054] [2021-11-07 10:34:47,190 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:34:47,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 10:34:47,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:34:47,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 10:34:47,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:34:47,191 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) [2021-11-07 10:35:04,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:35:04,343 INFO L93 Difference]: Finished difference Result 105801 states and 137975 transitions. [2021-11-07 10:35:04,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 10:35:04,344 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 [2021-11-07 10:35:04,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:35:04,514 INFO L225 Difference]: With dead ends: 105801 [2021-11-07 10:35:04,515 INFO L226 Difference]: Without dead ends: 95050 [2021-11-07 10:35:04,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1188.09ms TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-07 10:35:04,550 INFO L933 BasicCegarLoop]: 2316 mSDtfsCounter, 3724 mSDsluCounter, 7541 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4487.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3724 SdHoareTripleChecker+Valid, 9857 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.12ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4704.63ms IncrementalHoareTripleChecker+Time [2021-11-07 10:35:04,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3724 Valid, 9857 Invalid, 370 Unknown, 0 Unchecked, 16.12ms Time], IncrementalHoareTripleChecker [18 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 4704.63ms Time] [2021-11-07 10:35:04,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95050 states. [2021-11-07 10:35:06,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95050 to 10807. [2021-11-07 10:35:06,438 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) [2021-11-07 10:35:06,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10807 states to 10807 states and 13989 transitions. [2021-11-07 10:35:06,452 INFO L78 Accepts]: Start accepts. Automaton has 10807 states and 13989 transitions. Word has length 51 [2021-11-07 10:35:06,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:35:06,452 INFO L470 AbstractCegarLoop]: Abstraction has 10807 states and 13989 transitions. [2021-11-07 10:35:06,452 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) [2021-11-07 10:35:06,453 INFO L276 IsEmpty]: Start isEmpty. Operand 10807 states and 13989 transitions. [2021-11-07 10:35:06,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 10:35:06,454 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:35:06,454 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] [2021-11-07 10:35:06,470 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 10:35:06,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:35:06,655 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)] === [2021-11-07 10:35:06,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:35:06,655 INFO L85 PathProgramCache]: Analyzing trace with hash -61741317, now seen corresponding path program 1 times [2021-11-07 10:35:06,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:35:06,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843744246] [2021-11-07 10:35:06,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:35:06,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:35:06,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:35:06,657 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) [2021-11-07 10:35:06,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 10:35:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:35:07,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 10:35:07,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:35:07,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:35:07,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:35:07,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:35:07,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:35:07,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843744246] [2021-11-07 10:35:07,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843744246] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:35:07,605 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:35:07,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 10:35:07,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87309360] [2021-11-07 10:35:07,605 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:35:07,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:35:07,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:35:07,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:35:07,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:35:07,606 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) [2021-11-07 10:35:13,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:35:13,310 INFO L93 Difference]: Finished difference Result 41931 states and 54176 transitions. [2021-11-07 10:35:13,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:35:13,311 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 [2021-11-07 10:35:13,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:35:13,358 INFO L225 Difference]: With dead ends: 41931 [2021-11-07 10:35:13,358 INFO L226 Difference]: Without dead ends: 31132 [2021-11-07 10:35:13,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 176.91ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:35:13,377 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 1354 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 853.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.12ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 890.86ms IncrementalHoareTripleChecker+Time [2021-11-07 10:35:13,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1354 Valid, 2695 Invalid, 25 Unknown, 0 Unchecked, 4.12ms Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 890.86ms Time] [2021-11-07 10:35:13,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31132 states. [2021-11-07 10:35:15,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31132 to 10184. [2021-11-07 10:35:15,264 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) [2021-11-07 10:35:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10184 states to 10184 states and 13135 transitions. [2021-11-07 10:35:15,280 INFO L78 Accepts]: Start accepts. Automaton has 10184 states and 13135 transitions. Word has length 52 [2021-11-07 10:35:15,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:35:15,280 INFO L470 AbstractCegarLoop]: Abstraction has 10184 states and 13135 transitions. [2021-11-07 10:35:15,280 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) [2021-11-07 10:35:15,280 INFO L276 IsEmpty]: Start isEmpty. Operand 10184 states and 13135 transitions. [2021-11-07 10:35:15,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 10:35:15,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:35:15,281 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] [2021-11-07 10:35:15,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-07 10:35:15,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:35:15,482 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)] === [2021-11-07 10:35:15,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:35:15,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1082809671, now seen corresponding path program 1 times [2021-11-07 10:35:15,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:35:15,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [768503264] [2021-11-07 10:35:15,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:35:15,484 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:35:15,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:35:15,485 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) [2021-11-07 10:35:15,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 10:35:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:35:15,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 10:35:15,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:35:16,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:35:16,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:35:16,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:35:16,512 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:35:16,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [768503264] [2021-11-07 10:35:16,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [768503264] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:35:16,515 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:35:16,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 10:35:16,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762424997] [2021-11-07 10:35:16,515 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:35:16,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:35:16,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:35:16,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:35:16,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:35:16,516 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) [2021-11-07 10:35:28,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:35:28,434 INFO L93 Difference]: Finished difference Result 67888 states and 87963 transitions. [2021-11-07 10:35:28,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 10:35:28,436 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 [2021-11-07 10:35:28,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:35:28,552 INFO L225 Difference]: With dead ends: 67888 [2021-11-07 10:35:28,552 INFO L226 Difference]: Without dead ends: 62406 [2021-11-07 10:35:28,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 464.38ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 10:35:28,577 INFO L933 BasicCegarLoop]: 1439 mSDtfsCounter, 1939 mSDsluCounter, 3582 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 959.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1939 SdHoareTripleChecker+Valid, 5021 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.43ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1035.74ms IncrementalHoareTripleChecker+Time [2021-11-07 10:35:28,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1939 Valid, 5021 Invalid, 181 Unknown, 0 Unchecked, 8.43ms Time], IncrementalHoareTripleChecker [16 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 1035.74ms Time] [2021-11-07 10:35:28,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62406 states. [2021-11-07 10:35:30,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62406 to 10364. [2021-11-07 10:35:30,539 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) [2021-11-07 10:35:30,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10364 states to 10364 states and 13315 transitions. [2021-11-07 10:35:30,552 INFO L78 Accepts]: Start accepts. Automaton has 10364 states and 13315 transitions. Word has length 52 [2021-11-07 10:35:30,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:35:30,553 INFO L470 AbstractCegarLoop]: Abstraction has 10364 states and 13315 transitions. [2021-11-07 10:35:30,553 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) [2021-11-07 10:35:30,553 INFO L276 IsEmpty]: Start isEmpty. Operand 10364 states and 13315 transitions. [2021-11-07 10:35:30,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 10:35:30,554 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:35:30,554 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] [2021-11-07 10:35:30,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 10:35:30,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:35:30,768 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)] === [2021-11-07 10:35:30,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:35:30,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1523213883, now seen corresponding path program 1 times [2021-11-07 10:35:30,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:35:30,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102657013] [2021-11-07 10:35:30,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:35:30,769 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:35:30,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:35:30,770 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) [2021-11-07 10:35:30,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 10:35:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:35:31,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 10:35:31,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:35:31,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:35:31,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:35:31,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:35:31,477 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:35:31,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102657013] [2021-11-07 10:35:31,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102657013] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:35:31,477 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:35:31,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 10:35:31,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004386033] [2021-11-07 10:35:31,477 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:35:31,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:35:31,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:35:31,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:35:31,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:35:31,478 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) [2021-11-07 10:35:34,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:35:34,937 INFO L93 Difference]: Finished difference Result 25606 states and 33029 transitions. [2021-11-07 10:35:34,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:35:34,938 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 [2021-11-07 10:35:34,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:35:34,970 INFO L225 Difference]: With dead ends: 25606 [2021-11-07 10:35:34,971 INFO L226 Difference]: Without dead ends: 20034 [2021-11-07 10:35:34,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.54ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:35:34,983 INFO L933 BasicCegarLoop]: 867 mSDtfsCounter, 1314 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 191.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1314 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.87ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 221.29ms IncrementalHoareTripleChecker+Time [2021-11-07 10:35:34,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1314 Valid, 1792 Invalid, 29 Unknown, 0 Unchecked, 2.87ms Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 221.29ms Time] [2021-11-07 10:35:34,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20034 states. [2021-11-07 10:35:36,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20034 to 10436. [2021-11-07 10:35:36,819 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) [2021-11-07 10:35:36,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10436 states to 10436 states and 13399 transitions. [2021-11-07 10:35:36,835 INFO L78 Accepts]: Start accepts. Automaton has 10436 states and 13399 transitions. Word has length 52 [2021-11-07 10:35:36,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:35:36,836 INFO L470 AbstractCegarLoop]: Abstraction has 10436 states and 13399 transitions. [2021-11-07 10:35:36,836 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) [2021-11-07 10:35:36,836 INFO L276 IsEmpty]: Start isEmpty. Operand 10436 states and 13399 transitions. [2021-11-07 10:35:36,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 10:35:36,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:35:36,837 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] [2021-11-07 10:35:36,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 10:35:37,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:35:37,038 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)] === [2021-11-07 10:35:37,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:35:37,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1066011435, now seen corresponding path program 1 times [2021-11-07 10:35:37,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:35:37,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024084096] [2021-11-07 10:35:37,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:35:37,040 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:35:37,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:35:37,041 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) [2021-11-07 10:35:37,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 10:35:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:35:37,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 10:35:37,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:35:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:35:38,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:35:38,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:35:38,405 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:35:38,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024084096] [2021-11-07 10:35:38,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024084096] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:35:38,406 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:35:38,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-11-07 10:35:38,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606511417] [2021-11-07 10:35:38,406 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:35:38,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 10:35:38,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:35:38,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 10:35:38,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 10:35:38,407 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) [2021-11-07 10:36:31,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:36:31,891 INFO L93 Difference]: Finished difference Result 234963 states and 306466 transitions. [2021-11-07 10:36:31,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-07 10:36:31,891 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 [2021-11-07 10:36:31,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:36:32,476 INFO L225 Difference]: With dead ends: 234963 [2021-11-07 10:36:32,476 INFO L226 Difference]: Without dead ends: 224535 [2021-11-07 10:36:32,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 2710.28ms TimeCoverageRelationStatistics Valid=337, Invalid=1145, Unknown=0, NotChecked=0, Total=1482 [2021-11-07 10:36:32,561 INFO L933 BasicCegarLoop]: 2151 mSDtfsCounter, 7042 mSDsluCounter, 11514 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4424.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7042 SdHoareTripleChecker+Valid, 13665 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.69ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4677.71ms IncrementalHoareTripleChecker+Time [2021-11-07 10:36:32,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7042 Valid, 13665 Invalid, 549 Unknown, 0 Unchecked, 27.69ms Time], IncrementalHoareTripleChecker [20 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 4677.71ms Time] [2021-11-07 10:36:32,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224535 states. [2021-11-07 10:36:36,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224535 to 10280. [2021-11-07 10:36:36,423 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) [2021-11-07 10:36:36,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10280 states to 10280 states and 13177 transitions. [2021-11-07 10:36:36,436 INFO L78 Accepts]: Start accepts. Automaton has 10280 states and 13177 transitions. Word has length 53 [2021-11-07 10:36:36,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:36:36,437 INFO L470 AbstractCegarLoop]: Abstraction has 10280 states and 13177 transitions. [2021-11-07 10:36:36,437 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) [2021-11-07 10:36:36,437 INFO L276 IsEmpty]: Start isEmpty. Operand 10280 states and 13177 transitions. [2021-11-07 10:36:36,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 10:36:36,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:36:36,438 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] [2021-11-07 10:36:36,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-07 10:36:36,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:36:36,640 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)] === [2021-11-07 10:36:36,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:36:36,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1963806063, now seen corresponding path program 1 times [2021-11-07 10:36:36,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:36:36,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444026402] [2021-11-07 10:36:36,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:36:36,641 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:36:36,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:36:36,642 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) [2021-11-07 10:36:36,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 10:36:37,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:36:37,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 10:36:37,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:36:37,366 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:36:37,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:36:37,681 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:36:37,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:36:37,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444026402] [2021-11-07 10:36:37,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444026402] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:36:37,681 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:36:37,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 10:36:37,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547114951] [2021-11-07 10:36:37,682 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:36:37,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 10:36:37,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:36:37,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 10:36:37,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 10:36:37,683 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) [2021-11-07 10:36:39,745 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 [] [2021-11-07 10:36:42,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:36:42,395 INFO L93 Difference]: Finished difference Result 20598 states and 26401 transitions. [2021-11-07 10:36:42,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:36:42,396 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 [2021-11-07 10:36:42,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:36:42,415 INFO L225 Difference]: With dead ends: 20598 [2021-11-07 10:36:42,415 INFO L226 Difference]: Without dead ends: 10324 [2021-11-07 10:36:42,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 168.26ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:36:42,427 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 29 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2124.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.57ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2162.24ms IncrementalHoareTripleChecker+Time [2021-11-07 10:36:42,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 2009 Invalid, 13 Unknown, 0 Unchecked, 1.57ms Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 1 Unknown, 0 Unchecked, 2162.24ms Time] [2021-11-07 10:36:42,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10324 states. [2021-11-07 10:36:44,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10324 to 10286. [2021-11-07 10:36:44,768 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) [2021-11-07 10:36:44,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10286 states to 10286 states and 13182 transitions. [2021-11-07 10:36:44,783 INFO L78 Accepts]: Start accepts. Automaton has 10286 states and 13182 transitions. Word has length 53 [2021-11-07 10:36:44,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:36:44,783 INFO L470 AbstractCegarLoop]: Abstraction has 10286 states and 13182 transitions. [2021-11-07 10:36:44,783 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) [2021-11-07 10:36:44,783 INFO L276 IsEmpty]: Start isEmpty. Operand 10286 states and 13182 transitions. [2021-11-07 10:36:44,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 10:36:44,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:36:44,784 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:36:44,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-07 10:36:44,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:36:44,999 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)] === [2021-11-07 10:36:45,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:36:45,000 INFO L85 PathProgramCache]: Analyzing trace with hash 430540154, now seen corresponding path program 1 times [2021-11-07 10:36:45,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:36:45,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030046418] [2021-11-07 10:36:45,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:36:45,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:36:45,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:36:45,002 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) [2021-11-07 10:36:45,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 10:36:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:36:45,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 10:36:45,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:36:46,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:36:46,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:36:46,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:36:46,846 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:36:46,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030046418] [2021-11-07 10:36:46,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030046418] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:36:46,846 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:36:46,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 10:36:46,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051963284] [2021-11-07 10:36:46,846 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:36:46,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 10:36:46,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:36:46,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 10:36:46,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-07 10:36:46,847 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) [2021-11-07 10:36:48,911 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 [] [2021-11-07 10:36:57,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:36:57,709 INFO L93 Difference]: Finished difference Result 42117 states and 54023 transitions. [2021-11-07 10:36:57,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 10:36:57,709 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 [2021-11-07 10:36:57,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:36:57,770 INFO L225 Difference]: With dead ends: 42117 [2021-11-07 10:36:57,770 INFO L226 Difference]: Without dead ends: 36593 [2021-11-07 10:36:57,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 186.03ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:36:57,785 INFO L933 BasicCegarLoop]: 910 mSDtfsCounter, 3519 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2340.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3519 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.81ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2388.09ms IncrementalHoareTripleChecker+Time [2021-11-07 10:36:57,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3519 Valid, 2841 Invalid, 81 Unknown, 0 Unchecked, 6.81ms Time], IncrementalHoareTripleChecker [33 Valid, 47 Invalid, 1 Unknown, 0 Unchecked, 2388.09ms Time] [2021-11-07 10:36:57,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36593 states. [2021-11-07 10:37:05,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36593 to 31548. [2021-11-07 10:37:05,291 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) [2021-11-07 10:37:05,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31548 states to 31548 states and 40428 transitions. [2021-11-07 10:37:05,345 INFO L78 Accepts]: Start accepts. Automaton has 31548 states and 40428 transitions. Word has length 54 [2021-11-07 10:37:05,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:37:05,346 INFO L470 AbstractCegarLoop]: Abstraction has 31548 states and 40428 transitions. [2021-11-07 10:37:05,346 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) [2021-11-07 10:37:05,346 INFO L276 IsEmpty]: Start isEmpty. Operand 31548 states and 40428 transitions. [2021-11-07 10:37:05,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 10:37:05,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:37:05,347 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] [2021-11-07 10:37:05,364 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 10:37:05,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:37:05,558 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)] === [2021-11-07 10:37:05,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:37:05,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1196811633, now seen corresponding path program 1 times [2021-11-07 10:37:05,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:37:05,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361816381] [2021-11-07 10:37:05,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:37:05,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:37:05,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:37:05,560 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) [2021-11-07 10:37:05,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-07 10:37:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:37:06,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 10:37:06,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:37:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 10:37:06,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:37:06,643 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-07 10:37:06,644 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:37:06,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361816381] [2021-11-07 10:37:06,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361816381] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:37:06,644 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:37:06,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 10:37:06,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497202957] [2021-11-07 10:37:06,644 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:37:06,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:37:06,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:37:06,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:37:06,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:37:06,645 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) [2021-11-07 10:37:30,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:37:30,623 INFO L93 Difference]: Finished difference Result 112751 states and 145474 transitions. [2021-11-07 10:37:30,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:37:30,624 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 [2021-11-07 10:37:30,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:37:30,798 INFO L225 Difference]: With dead ends: 112751 [2021-11-07 10:37:30,798 INFO L226 Difference]: Without dead ends: 81211 [2021-11-07 10:37:30,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 169.06ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:37:30,841 INFO L933 BasicCegarLoop]: 1222 mSDtfsCounter, 833 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1214.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.74ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1270.88ms IncrementalHoareTripleChecker+Time [2021-11-07 10:37:30,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [833 Valid, 2830 Invalid, 42 Unknown, 0 Unchecked, 4.74ms Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 1270.88ms Time] [2021-11-07 10:37:30,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81211 states. [2021-11-07 10:37:39,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81211 to 30436. [2021-11-07 10:37:39,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30436 states, 30425 states have (on average 1.2790139687756779) internal successors, (38914), 30435 states have internal predecessors, (38914), 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) [2021-11-07 10:37:39,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30436 states to 30436 states and 38914 transitions. [2021-11-07 10:37:39,088 INFO L78 Accepts]: Start accepts. Automaton has 30436 states and 38914 transitions. Word has length 55 [2021-11-07 10:37:39,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:37:39,089 INFO L470 AbstractCegarLoop]: Abstraction has 30436 states and 38914 transitions. [2021-11-07 10:37:39,089 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) [2021-11-07 10:37:39,089 INFO L276 IsEmpty]: Start isEmpty. Operand 30436 states and 38914 transitions. [2021-11-07 10:37:39,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 10:37:39,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:37:39,090 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:37:39,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-07 10:37:39,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-11-07 10:37:39,291 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-07 10:37:39,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:37:39,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1514792705, now seen corresponding path program 1 times [2021-11-07 10:37:39,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 10:37:39,292 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [985721465] [2021-11-07 10:37:39,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:37:39,292 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 10:37:39,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-11-07 10:37:39,294 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 10:37:39,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-07 10:37:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:37:39,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 10:37:39,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:37:40,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:37:40,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:37:40,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:37:40,378 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 10:37:40,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [985721465] [2021-11-07 10:37:40,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [985721465] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 10:37:40,378 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:37:40,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-07 10:37:40,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705093539] [2021-11-07 10:37:40,378 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-07 10:37:40,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 10:37:40,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 10:37:40,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 10:37:40,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:37:40,379 INFO L87 Difference]: Start difference. First operand 30436 states and 38914 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) [2021-11-07 10:39:36,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:39:36,539 INFO L93 Difference]: Finished difference Result 376001 states and 487742 transitions. [2021-11-07 10:39:36,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 10:39:36,539 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 [2021-11-07 10:39:36,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:39:37,667 INFO L225 Difference]: With dead ends: 376001 [2021-11-07 10:39:37,667 INFO L226 Difference]: Without dead ends: 345573 [2021-11-07 10:39:37,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1176.21ms TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-07 10:39:37,808 INFO L933 BasicCegarLoop]: 1239 mSDtfsCounter, 5408 mSDsluCounter, 7030 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2111.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5408 SdHoareTripleChecker+Valid, 8269 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.51ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2225.04ms IncrementalHoareTripleChecker+Time [2021-11-07 10:39:37,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5408 Valid, 8269 Invalid, 259 Unknown, 0 Unchecked, 18.51ms Time], IncrementalHoareTripleChecker [19 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 2225.04ms Time] [2021-11-07 10:39:38,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345573 states.