./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.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 4b418a847569c2fdb13e49f0158439b90c8dabf7cf2f41b74c1e9948cb252ab6 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 07:23:24,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 07:23:24,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 07:23:24,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 07:23:24,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 07:23:24,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 07:23:24,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 07:23:24,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 07:23:24,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 07:23:24,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 07:23:24,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 07:23:24,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 07:23:24,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 07:23:24,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 07:23:24,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 07:23:24,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 07:23:24,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 07:23:24,541 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 07:23:24,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 07:23:24,547 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 07:23:24,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 07:23:24,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 07:23:24,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 07:23:24,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 07:23:24,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 07:23:24,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 07:23:24,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 07:23:24,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 07:23:24,560 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 07:23:24,561 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 07:23:24,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 07:23:24,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 07:23:24,563 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 07:23:24,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 07:23:24,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 07:23:24,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 07:23:24,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 07:23:24,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 07:23:24,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 07:23:24,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 07:23:24,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 07:23:24,569 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 07:23:24,603 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 07:23:24,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 07:23:24,604 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 07:23:24,604 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 07:23:24,605 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 07:23:24,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 07:23:24,606 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 07:23:24,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 07:23:24,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 07:23:24,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 07:23:24,607 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 07:23:24,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 07:23:24,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 07:23:24,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 07:23:24,608 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 07:23:24,608 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 07:23:24,608 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 07:23:24,609 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 07:23:24,609 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 07:23:24,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 07:23:24,609 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 07:23:24,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 07:23:24,610 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 07:23:24,610 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 07:23:24,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 07:23:24,610 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 07:23:24,610 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 07:23:24,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 07:23:24,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 07:23:24,612 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b418a847569c2fdb13e49f0158439b90c8dabf7cf2f41b74c1e9948cb252ab6 [2021-11-04 07:23:24,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 07:23:24,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 07:23:24,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 07:23:24,874 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 07:23:24,875 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 07:23:24,876 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2021-11-04 07:23:24,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1c324f65/bf19c47fb2fd4f468f659d3ed71de487/FLAG192eaac99 [2021-11-04 07:23:25,615 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 07:23:25,616 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2021-11-04 07:23:25,640 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1c324f65/bf19c47fb2fd4f468f659d3ed71de487/FLAG192eaac99 [2021-11-04 07:23:25,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1c324f65/bf19c47fb2fd4f468f659d3ed71de487 [2021-11-04 07:23:25,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 07:23:25,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 07:23:25,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 07:23:25,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 07:23:25,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 07:23:25,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 07:23:25" (1/1) ... [2021-11-04 07:23:25,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36367c26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:25, skipping insertion in model container [2021-11-04 07:23:25,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 07:23:25" (1/1) ... [2021-11-04 07:23:25,758 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 07:23:25,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 07:23:26,837 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i[235755,235768] [2021-11-04 07:23:26,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 07:23:26,959 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 07:23:27,286 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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i[235755,235768] [2021-11-04 07:23:27,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 07:23:27,374 INFO L208 MainTranslator]: Completed translation [2021-11-04 07:23:27,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:27 WrapperNode [2021-11-04 07:23:27,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 07:23:27,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 07:23:27,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 07:23:27,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 07:23:27,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:27" (1/1) ... [2021-11-04 07:23:27,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:27" (1/1) ... [2021-11-04 07:23:28,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 07:23:28,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 07:23:28,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 07:23:28,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 07:23:28,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:27" (1/1) ... [2021-11-04 07:23:28,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:27" (1/1) ... [2021-11-04 07:23:28,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:27" (1/1) ... [2021-11-04 07:23:28,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:27" (1/1) ... [2021-11-04 07:23:29,233 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:27" (1/1) ... [2021-11-04 07:23:29,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:27" (1/1) ... [2021-11-04 07:23:29,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:27" (1/1) ... [2021-11-04 07:23:29,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 07:23:29,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 07:23:29,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 07:23:29,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 07:23:29,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:27" (1/1) ... [2021-11-04 07:23:29,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 07:23:29,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 07:23:29,684 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) [2021-11-04 07:23:29,708 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 [2021-11-04 07:23:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 07:23:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 07:23:29,720 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 07:23:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 07:23:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 07:23:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 07:23:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 07:23:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 07:23:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 07:23:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 07:23:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 07:23:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 07:23:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 07:23:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 07:23:29,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 07:23:44,356 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 07:23:44,357 INFO L299 CfgBuilder]: Removed 5131 assume(true) statements. [2021-11-04 07:23:44,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 07:23:44 BoogieIcfgContainer [2021-11-04 07:23:44,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 07:23:44,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 07:23:44,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 07:23:44,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 07:23:44,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 07:23:25" (1/3) ... [2021-11-04 07:23:44,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20babc40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 07:23:44, skipping insertion in model container [2021-11-04 07:23:44,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:23:27" (2/3) ... [2021-11-04 07:23:44,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20babc40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 07:23:44, skipping insertion in model container [2021-11-04 07:23:44,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 07:23:44" (3/3) ... [2021-11-04 07:23:44,369 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--serial--ti_usb_3410_5052.ko-entry_point.cil.out.i [2021-11-04 07:23:44,374 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 07:23:44,374 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-04 07:23:44,440 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 07:23:44,448 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 [2021-11-04 07:23:44,448 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-04 07:23:44,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 4852 states, 4839 states have (on average 1.3860301715230419) internal successors, (6707), 4851 states have internal predecessors, (6707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:23:44,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-04 07:23:44,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:23:44,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:23:44,533 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 07:23:44,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:23:44,538 INFO L85 PathProgramCache]: Analyzing trace with hash 220167062, now seen corresponding path program 1 times [2021-11-04 07:23:44,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:23:44,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956600673] [2021-11-04 07:23:44,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:23:44,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:23:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:23:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 07:23:45,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:23:45,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956600673] [2021-11-04 07:23:45,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956600673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:23:45,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:23:45,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:23:45,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460724324] [2021-11-04 07:23:45,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:23:45,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 07:23:45,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:23:45,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 07:23:45,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 07:23:45,340 INFO L87 Difference]: Start difference. First operand has 4852 states, 4839 states have (on average 1.3860301715230419) internal successors, (6707), 4851 states have internal predecessors, (6707), 0 states have call successors, (0), 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 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:23:47,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:24:37,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:24:37,699 INFO L93 Difference]: Finished difference Result 9700 states and 13409 transitions. [2021-11-04 07:24:37,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 07:24:37,702 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-04 07:24:37,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:24:37,736 INFO L225 Difference]: With dead ends: 9700 [2021-11-04 07:24:37,737 INFO L226 Difference]: Without dead ends: 4844 [2021-11-04 07:24:37,749 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 07:24:37,753 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6598 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47740.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 6599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 55.77ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6598 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51535.28ms IncrementalHoareTripleChecker+Time [2021-11-04 07:24:37,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 6599 Unknown, 0 Unchecked, 55.77ms Time], IncrementalHoareTripleChecker [0 Valid, 6598 Invalid, 1 Unknown, 0 Unchecked, 51535.28ms Time] [2021-11-04 07:24:37,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4844 states. [2021-11-04 07:24:37,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4844 to 4844. [2021-11-04 07:24:37,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4844 states, 4832 states have (on average 1.3640314569536425) internal successors, (6591), 4843 states have internal predecessors, (6591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:24:37,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4844 states to 4844 states and 6591 transitions. [2021-11-04 07:24:37,951 INFO L78 Accepts]: Start accepts. Automaton has 4844 states and 6591 transitions. Word has length 78 [2021-11-04 07:24:37,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:24:37,952 INFO L470 AbstractCegarLoop]: Abstraction has 4844 states and 6591 transitions. [2021-11-04 07:24:37,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 39.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:24:37,952 INFO L276 IsEmpty]: Start isEmpty. Operand 4844 states and 6591 transitions. [2021-11-04 07:24:37,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-04 07:24:37,957 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:24:37,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:24:37,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 07:24:37,958 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 07:24:37,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:24:37,959 INFO L85 PathProgramCache]: Analyzing trace with hash -85929696, now seen corresponding path program 1 times [2021-11-04 07:24:37,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:24:37,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472217908] [2021-11-04 07:24:37,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:24:37,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:24:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:24:38,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 07:24:38,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:24:38,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472217908] [2021-11-04 07:24:38,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472217908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:24:38,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:24:38,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:24:38,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648511021] [2021-11-04 07:24:38,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:24:38,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:24:38,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:24:38,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:24:38,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:24:38,471 INFO L87 Difference]: Start difference. First operand 4844 states and 6591 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:24:40,613 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:26:11,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:26:11,791 INFO L93 Difference]: Finished difference Result 9670 states and 13173 transitions. [2021-11-04 07:26:11,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:26:11,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-11-04 07:26:11,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:26:11,819 INFO L225 Difference]: With dead ends: 9670 [2021-11-04 07:26:11,820 INFO L226 Difference]: Without dead ends: 4854 [2021-11-04 07:26:11,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.37ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:26:11,833 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 6518 mSDsCounter, 0 mSdLazyCounter, 13170 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87871.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 128.80ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 13170 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92492.80ms IncrementalHoareTripleChecker+Time [2021-11-04 07:26:11,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 13189 Unknown, 0 Unchecked, 128.80ms Time], IncrementalHoareTripleChecker [18 Valid, 13170 Invalid, 1 Unknown, 0 Unchecked, 92492.80ms Time] [2021-11-04 07:26:11,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4854 states. [2021-11-04 07:26:11,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4854 to 4854. [2021-11-04 07:26:11,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4854 states, 4842 states have (on average 1.3632796365138373) internal successors, (6601), 4853 states have internal predecessors, (6601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:26:11,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4854 states to 4854 states and 6601 transitions. [2021-11-04 07:26:11,937 INFO L78 Accepts]: Start accepts. Automaton has 4854 states and 6601 transitions. Word has length 78 [2021-11-04 07:26:11,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:26:11,938 INFO L470 AbstractCegarLoop]: Abstraction has 4854 states and 6601 transitions. [2021-11-04 07:26:11,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:26:11,941 INFO L276 IsEmpty]: Start isEmpty. Operand 4854 states and 6601 transitions. [2021-11-04 07:26:11,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-04 07:26:11,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:26:11,946 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:26:11,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 07:26:11,946 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 07:26:11,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:26:11,947 INFO L85 PathProgramCache]: Analyzing trace with hash -716900824, now seen corresponding path program 1 times [2021-11-04 07:26:11,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:26:11,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690453427] [2021-11-04 07:26:11,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:26:11,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:26:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:26:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-04 07:26:12,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:26:12,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690453427] [2021-11-04 07:26:12,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690453427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:26:12,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:26:12,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:26:12,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855973074] [2021-11-04 07:26:12,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:26:12,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:26:12,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:26:12,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:26:12,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:26:12,373 INFO L87 Difference]: Start difference. First operand 4854 states and 6601 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:26:14,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:27:50,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:27:50,740 INFO L93 Difference]: Finished difference Result 9672 states and 13166 transitions. [2021-11-04 07:27:50,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:27:50,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-04 07:27:50,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:27:50,760 INFO L225 Difference]: With dead ends: 9672 [2021-11-04 07:27:50,760 INFO L226 Difference]: Without dead ends: 4858 [2021-11-04 07:27:50,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:27:50,772 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 6518 mSDsCounter, 0 mSdLazyCounter, 13176 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92532.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 96.03ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 13176 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97732.86ms IncrementalHoareTripleChecker+Time [2021-11-04 07:27:50,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 13183 Unknown, 0 Unchecked, 96.03ms Time], IncrementalHoareTripleChecker [6 Valid, 13176 Invalid, 1 Unknown, 0 Unchecked, 97732.86ms Time] [2021-11-04 07:27:50,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4858 states. [2021-11-04 07:27:50,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4858 to 4858. [2021-11-04 07:27:50,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4858 states, 4846 states have (on average 1.3629797771357821) internal successors, (6605), 4857 states have internal predecessors, (6605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:27:50,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4858 states to 4858 states and 6605 transitions. [2021-11-04 07:27:50,872 INFO L78 Accepts]: Start accepts. Automaton has 4858 states and 6605 transitions. Word has length 88 [2021-11-04 07:27:50,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:27:50,874 INFO L470 AbstractCegarLoop]: Abstraction has 4858 states and 6605 transitions. [2021-11-04 07:27:50,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:27:50,875 INFO L276 IsEmpty]: Start isEmpty. Operand 4858 states and 6605 transitions. [2021-11-04 07:27:50,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-04 07:27:50,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:27:50,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:27:50,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 07:27:50,878 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 07:27:50,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:27:50,878 INFO L85 PathProgramCache]: Analyzing trace with hash -427150162, now seen corresponding path program 1 times [2021-11-04 07:27:50,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:27:50,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103487796] [2021-11-04 07:27:50,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:27:50,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:27:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:27:51,285 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-04 07:27:51,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:27:51,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103487796] [2021-11-04 07:27:51,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103487796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:27:51,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:27:51,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:27:51,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730832735] [2021-11-04 07:27:51,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:27:51,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:27:51,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:27:51,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:27:51,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:27:51,287 INFO L87 Difference]: Start difference. First operand 4858 states and 6605 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:27:53,405 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:29:37,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:29:37,088 INFO L93 Difference]: Finished difference Result 14358 states and 19570 transitions. [2021-11-04 07:29:37,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:29:37,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-11-04 07:29:37,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:29:37,119 INFO L225 Difference]: With dead ends: 14358 [2021-11-04 07:29:37,119 INFO L226 Difference]: Without dead ends: 9583 [2021-11-04 07:29:37,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.12ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:29:37,130 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6453 mSDsluCounter, 6576 mSDsCounter, 0 mSdLazyCounter, 13174 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97736.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6453 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 109.60ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13174 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104646.03ms IncrementalHoareTripleChecker+Time [2021-11-04 07:29:37,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6453 Valid, 0 Invalid, 13178 Unknown, 0 Unchecked, 109.60ms Time], IncrementalHoareTripleChecker [3 Valid, 13174 Invalid, 1 Unknown, 0 Unchecked, 104646.03ms Time] [2021-11-04 07:29:37,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9583 states. [2021-11-04 07:29:37,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9583 to 9567. [2021-11-04 07:29:37,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9567 states, 9555 states have (on average 1.3658817373103087) internal successors, (13051), 9566 states have internal predecessors, (13051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:29:37,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9567 states to 9567 states and 13051 transitions. [2021-11-04 07:29:37,335 INFO L78 Accepts]: Start accepts. Automaton has 9567 states and 13051 transitions. Word has length 92 [2021-11-04 07:29:37,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:29:37,337 INFO L470 AbstractCegarLoop]: Abstraction has 9567 states and 13051 transitions. [2021-11-04 07:29:37,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:29:37,338 INFO L276 IsEmpty]: Start isEmpty. Operand 9567 states and 13051 transitions. [2021-11-04 07:29:37,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-04 07:29:37,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:29:37,343 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:29:37,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 07:29:37,343 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 07:29:37,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:29:37,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1766922132, now seen corresponding path program 1 times [2021-11-04 07:29:37,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:29:37,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132886651] [2021-11-04 07:29:37,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:29:37,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:29:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:29:38,051 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-04 07:29:38,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:29:38,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132886651] [2021-11-04 07:29:38,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132886651] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:29:38,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:29:38,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:29:38,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684844911] [2021-11-04 07:29:38,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:29:38,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:29:38,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:29:38,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:29:38,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:29:38,053 INFO L87 Difference]: Start difference. First operand 9567 states and 13051 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:29:40,141 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:30:33,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:30:33,789 INFO L93 Difference]: Finished difference Result 9567 states and 13051 transitions. [2021-11-04 07:30:33,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:30:33,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-11-04 07:30:33,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:30:33,826 INFO L225 Difference]: With dead ends: 9567 [2021-11-04 07:30:33,826 INFO L226 Difference]: Without dead ends: 9565 [2021-11-04 07:30:33,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.00ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:30:33,830 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6496 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6588 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50595.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6496 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.28ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6588 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55090.92ms IncrementalHoareTripleChecker+Time [2021-11-04 07:30:33,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6496 Valid, 0 Invalid, 6589 Unknown, 0 Unchecked, 40.28ms Time], IncrementalHoareTripleChecker [0 Valid, 6588 Invalid, 1 Unknown, 0 Unchecked, 55090.92ms Time] [2021-11-04 07:30:33,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9565 states. [2021-11-04 07:30:33,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9565 to 9565. [2021-11-04 07:30:34,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9565 states, 9554 states have (on average 1.3658153652920242) internal successors, (13049), 9564 states have internal predecessors, (13049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:30:34,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9565 states to 9565 states and 13049 transitions. [2021-11-04 07:30:34,028 INFO L78 Accepts]: Start accepts. Automaton has 9565 states and 13049 transitions. Word has length 95 [2021-11-04 07:30:34,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:30:34,028 INFO L470 AbstractCegarLoop]: Abstraction has 9565 states and 13049 transitions. [2021-11-04 07:30:34,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:30:34,029 INFO L276 IsEmpty]: Start isEmpty. Operand 9565 states and 13049 transitions. [2021-11-04 07:30:34,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-04 07:30:34,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:30:34,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:30:34,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 07:30:34,032 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 07:30:34,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:30:34,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1060010929, now seen corresponding path program 1 times [2021-11-04 07:30:34,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:30:34,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563769767] [2021-11-04 07:30:34,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:30:34,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:30:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:30:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-04 07:30:34,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:30:34,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563769767] [2021-11-04 07:30:34,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563769767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:30:34,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:30:34,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:30:34,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811724383] [2021-11-04 07:30:34,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:30:34,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:30:34,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:30:34,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:30:34,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:30:34,459 INFO L87 Difference]: Start difference. First operand 9565 states and 13049 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:30:36,549 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:31:29,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:31:29,836 INFO L93 Difference]: Finished difference Result 9565 states and 13049 transitions. [2021-11-04 07:31:29,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:31:29,837 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-11-04 07:31:29,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:31:29,854 INFO L225 Difference]: With dead ends: 9565 [2021-11-04 07:31:29,855 INFO L226 Difference]: Without dead ends: 9563 [2021-11-04 07:31:29,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.56ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:31:29,858 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6493 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6586 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50114.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6493 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6586 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54783.27ms IncrementalHoareTripleChecker+Time [2021-11-04 07:31:29,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6493 Valid, 0 Invalid, 6587 Unknown, 0 Unchecked, 40.49ms Time], IncrementalHoareTripleChecker [0 Valid, 6586 Invalid, 1 Unknown, 0 Unchecked, 54783.27ms Time] [2021-11-04 07:31:29,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9563 states. [2021-11-04 07:31:30,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9563 to 9563. [2021-11-04 07:31:30,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9563 states, 9553 states have (on average 1.3657489793782058) internal successors, (13047), 9562 states have internal predecessors, (13047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:31:30,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9563 states to 9563 states and 13047 transitions. [2021-11-04 07:31:30,032 INFO L78 Accepts]: Start accepts. Automaton has 9563 states and 13047 transitions. Word has length 96 [2021-11-04 07:31:30,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:31:30,033 INFO L470 AbstractCegarLoop]: Abstraction has 9563 states and 13047 transitions. [2021-11-04 07:31:30,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:31:30,033 INFO L276 IsEmpty]: Start isEmpty. Operand 9563 states and 13047 transitions. [2021-11-04 07:31:30,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-04 07:31:30,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:31:30,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:31:30,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 07:31:30,035 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 07:31:30,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:31:30,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1499377386, now seen corresponding path program 1 times [2021-11-04 07:31:30,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:31:30,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717228317] [2021-11-04 07:31:30,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:31:30,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:31:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:31:30,405 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-04 07:31:30,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:31:30,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717228317] [2021-11-04 07:31:30,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717228317] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:31:30,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:31:30,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:31:30,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722179750] [2021-11-04 07:31:30,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:31:30,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:31:30,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:31:30,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:31:30,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:31:30,407 INFO L87 Difference]: Start difference. First operand 9563 states and 13047 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:31:32,496 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:32:25,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:32:25,785 INFO L93 Difference]: Finished difference Result 9563 states and 13047 transitions. [2021-11-04 07:32:25,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:32:25,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-04 07:32:25,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:32:25,801 INFO L225 Difference]: With dead ends: 9563 [2021-11-04 07:32:25,802 INFO L226 Difference]: Without dead ends: 9561 [2021-11-04 07:32:25,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.05ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:32:25,808 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6490 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6584 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49782.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6490 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.74ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6584 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 54779.81ms IncrementalHoareTripleChecker+Time [2021-11-04 07:32:25,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6490 Valid, 0 Invalid, 6585 Unknown, 0 Unchecked, 36.74ms Time], IncrementalHoareTripleChecker [0 Valid, 6584 Invalid, 1 Unknown, 0 Unchecked, 54779.81ms Time] [2021-11-04 07:32:25,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9561 states. [2021-11-04 07:32:25,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9561 to 9561. [2021-11-04 07:32:25,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9561 states, 9552 states have (on average 1.3656825795644891) internal successors, (13045), 9560 states have internal predecessors, (13045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:32:26,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9561 states to 9561 states and 13045 transitions. [2021-11-04 07:32:26,010 INFO L78 Accepts]: Start accepts. Automaton has 9561 states and 13045 transitions. Word has length 97 [2021-11-04 07:32:26,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:32:26,011 INFO L470 AbstractCegarLoop]: Abstraction has 9561 states and 13045 transitions. [2021-11-04 07:32:26,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:32:26,011 INFO L276 IsEmpty]: Start isEmpty. Operand 9561 states and 13045 transitions. [2021-11-04 07:32:26,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-04 07:32:26,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:32:26,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:32:26,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 07:32:26,013 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 07:32:26,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:32:26,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1932297337, now seen corresponding path program 1 times [2021-11-04 07:32:26,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:32:26,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73080306] [2021-11-04 07:32:26,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:32:26,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:32:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:32:26,347 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-04 07:32:26,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:32:26,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73080306] [2021-11-04 07:32:26,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73080306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:32:26,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:32:26,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:32:26,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575813032] [2021-11-04 07:32:26,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:32:26,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:32:26,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:32:26,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:32:26,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:32:26,349 INFO L87 Difference]: Start difference. First operand 9561 states and 13045 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:32:28,436 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:34:13,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:34:13,093 INFO L93 Difference]: Finished difference Result 23799 states and 32497 transitions. [2021-11-04 07:34:13,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:34:13,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2021-11-04 07:34:13,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:34:13,124 INFO L225 Difference]: With dead ends: 23799 [2021-11-04 07:34:13,125 INFO L226 Difference]: Without dead ends: 14321 [2021-11-04 07:34:13,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.21ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:34:13,143 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3266 mSDsluCounter, 6361 mSDsCounter, 0 mSdLazyCounter, 13170 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96622.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3266 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 73.44ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13170 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 105726.60ms IncrementalHoareTripleChecker+Time [2021-11-04 07:34:13,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3266 Valid, 0 Invalid, 13172 Unknown, 0 Unchecked, 73.44ms Time], IncrementalHoareTripleChecker [1 Valid, 13170 Invalid, 1 Unknown, 0 Unchecked, 105726.60ms Time] [2021-11-04 07:34:13,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14321 states. [2021-11-04 07:34:13,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14321 to 14289. [2021-11-04 07:34:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14289 states, 14280 states have (on average 1.3669467787114846) internal successors, (19520), 14288 states have internal predecessors, (19520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:34:13,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14289 states to 14289 states and 19520 transitions. [2021-11-04 07:34:13,470 INFO L78 Accepts]: Start accepts. Automaton has 14289 states and 19520 transitions. Word has length 97 [2021-11-04 07:34:13,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:34:13,471 INFO L470 AbstractCegarLoop]: Abstraction has 14289 states and 19520 transitions. [2021-11-04 07:34:13,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:34:13,471 INFO L276 IsEmpty]: Start isEmpty. Operand 14289 states and 19520 transitions. [2021-11-04 07:34:13,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-04 07:34:13,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:34:13,472 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:34:13,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-04 07:34:13,473 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 07:34:13,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:34:13,473 INFO L85 PathProgramCache]: Analyzing trace with hash 763963483, now seen corresponding path program 1 times [2021-11-04 07:34:13,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:34:13,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416245793] [2021-11-04 07:34:13,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:34:13,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:34:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:34:13,881 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-04 07:34:13,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:34:13,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416245793] [2021-11-04 07:34:13,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416245793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:34:13,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:34:13,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:34:13,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104693736] [2021-11-04 07:34:13,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:34:13,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:34:13,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:34:13,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:34:13,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:34:13,883 INFO L87 Difference]: Start difference. First operand 14289 states and 19520 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:34:15,970 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:36:08,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:36:08,645 INFO L93 Difference]: Finished difference Result 42607 states and 58259 transitions. [2021-11-04 07:36:08,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:36:08,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2021-11-04 07:36:08,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:36:08,688 INFO L225 Difference]: With dead ends: 42607 [2021-11-04 07:36:08,689 INFO L226 Difference]: Without dead ends: 28396 [2021-11-04 07:36:08,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.43ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:36:08,721 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 6467 mSDsluCounter, 6451 mSDsCounter, 0 mSdLazyCounter, 13479 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101967.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6467 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 86.35ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 13479 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 113333.08ms IncrementalHoareTripleChecker+Time [2021-11-04 07:36:08,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6467 Valid, 0 Invalid, 13496 Unknown, 0 Unchecked, 86.35ms Time], IncrementalHoareTripleChecker [16 Valid, 13479 Invalid, 1 Unknown, 0 Unchecked, 113333.08ms Time] [2021-11-04 07:36:08,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28396 states. [2021-11-04 07:36:09,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28396 to 27204. [2021-11-04 07:36:09,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27204 states, 27195 states have (on average 1.367420481706196) internal successors, (37187), 27203 states have internal predecessors, (37187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:36:09,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27204 states to 27204 states and 37187 transitions. [2021-11-04 07:36:09,233 INFO L78 Accepts]: Start accepts. Automaton has 27204 states and 37187 transitions. Word has length 98 [2021-11-04 07:36:09,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:36:09,233 INFO L470 AbstractCegarLoop]: Abstraction has 27204 states and 37187 transitions. [2021-11-04 07:36:09,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:36:09,233 INFO L276 IsEmpty]: Start isEmpty. Operand 27204 states and 37187 transitions. [2021-11-04 07:36:09,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-04 07:36:09,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:36:09,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:36:09,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-04 07:36:09,236 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-04 07:36:09,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:36:09,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1967649786, now seen corresponding path program 1 times [2021-11-04 07:36:09,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:36:09,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065404986] [2021-11-04 07:36:09,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:36:09,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:36:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:36:09,559 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-04 07:36:09,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:36:09,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065404986] [2021-11-04 07:36:09,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065404986] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:36:09,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:36:09,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:36:09,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772789476] [2021-11-04 07:36:09,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:36:09,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:36:09,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:36:09,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:36:09,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:36:09,560 INFO L87 Difference]: Start difference. First operand 27204 states and 37187 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:36:11,646 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15