./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-43_2a-drivers--scsi--bnx2i--bnx2i.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--bnx2i--bnx2i.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 063e80a6567f3b510ecc2efbcb0a8f49fa12a56c608116a0a2a3dc1d5e72e4c2 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 16:06:58,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 16:06:58,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 16:06:58,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 16:06:58,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 16:06:58,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 16:06:58,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 16:06:58,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 16:06:58,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 16:06:58,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 16:06:58,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 16:06:58,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 16:06:58,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 16:06:58,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 16:06:58,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 16:06:58,711 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 16:06:58,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 16:06:58,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 16:06:58,714 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 16:06:58,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 16:06:58,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 16:06:58,719 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 16:06:58,720 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 16:06:58,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 16:06:58,724 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 16:06:58,724 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 16:06:58,725 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 16:06:58,726 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 16:06:58,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 16:06:58,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 16:06:58,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 16:06:58,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 16:06:58,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 16:06:58,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 16:06:58,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 16:06:58,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 16:06:58,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 16:06:58,730 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 16:06:58,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 16:06:58,731 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 16:06:58,731 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 16:06:58,732 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 16:06:58,757 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 16:06:58,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 16:06:58,757 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 16:06:58,757 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 16:06:58,758 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 16:06:58,759 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 16:06:58,759 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 16:06:58,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 16:06:58,759 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 16:06:58,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 16:06:58,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 16:06:58,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 16:06:58,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 16:06:58,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 16:06:58,760 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 16:06:58,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 16:06:58,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 16:06:58,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 16:06:58,761 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 16:06:58,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:06:58,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 16:06:58,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 16:06:58,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 16:06:58,762 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 16:06:58,762 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 16:06:58,762 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 16:06:58,762 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 16:06:58,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 16:06:58,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 16:06:58,763 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 063e80a6567f3b510ecc2efbcb0a8f49fa12a56c608116a0a2a3dc1d5e72e4c2 [2021-11-07 16:06:58,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 16:06:58,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 16:06:58,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 16:06:58,942 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 16:06:58,943 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 16:06:58,944 INFO L432 ainManager$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-43_2a-drivers--scsi--bnx2i--bnx2i.ko-entry_point.cil.out.i [2021-11-07 16:06:58,996 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf3fef1a/78449f1130a1437185a7318b930f1dfc/FLAG1825ed868 [2021-11-07 16:06:59,687 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 16:06:59,688 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--bnx2i--bnx2i.ko-entry_point.cil.out.i [2021-11-07 16:06:59,763 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf3fef1a/78449f1130a1437185a7318b930f1dfc/FLAG1825ed868 [2021-11-07 16:06:59,970 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdf3fef1a/78449f1130a1437185a7318b930f1dfc [2021-11-07 16:06:59,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 16:06:59,973 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 16:06:59,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 16:06:59,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 16:06:59,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 16:06:59,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:06:59" (1/1) ... [2021-11-07 16:06:59,988 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@611ff888 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:06:59, skipping insertion in model container [2021-11-07 16:06:59,988 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:06:59" (1/1) ... [2021-11-07 16:06:59,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 16:07:00,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 16:07:02,558 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-43_2a-drivers--scsi--bnx2i--bnx2i.ko-entry_point.cil.out.i[478905,478918] [2021-11-07 16:07:02,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:07:02,628 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 16:07:03,236 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-43_2a-drivers--scsi--bnx2i--bnx2i.ko-entry_point.cil.out.i[478905,478918] [2021-11-07 16:07:03,243 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:07:03,384 INFO L208 MainTranslator]: Completed translation [2021-11-07 16:07:03,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:03 WrapperNode [2021-11-07 16:07:03,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 16:07:03,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 16:07:03,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 16:07:03,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 16:07:03,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:03" (1/1) ... [2021-11-07 16:07:03,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:03" (1/1) ... [2021-11-07 16:07:05,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 16:07:05,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 16:07:05,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 16:07:05,277 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 16:07:05,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:03" (1/1) ... [2021-11-07 16:07:05,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:03" (1/1) ... [2021-11-07 16:07:05,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:03" (1/1) ... [2021-11-07 16:07:05,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:03" (1/1) ... [2021-11-07 16:07:06,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:03" (1/1) ... [2021-11-07 16:07:06,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:03" (1/1) ... [2021-11-07 16:07:07,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:03" (1/1) ... [2021-11-07 16:07:07,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 16:07:07,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 16:07:07,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 16:07:07,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 16:07:07,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:03" (1/1) ... [2021-11-07 16:07:07,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:07:07,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:07:07,448 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 16:07:07,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 16:07:07,472 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-07 16:07:07,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 16:07:07,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 16:07:07,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 16:07:07,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 16:07:07,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 16:07:07,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 16:07:07,473 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 16:07:07,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 16:07:07,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 16:07:07,473 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 16:07:07,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 16:07:07,473 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-07 16:07:07,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 16:07:07,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 16:07:07,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 16:07:07,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 16:07:07,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 16:10:00,814 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 16:10:00,814 INFO L299 CfgBuilder]: Removed 11252 assume(true) statements. [2021-11-07 16:10:00,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:10:00 BoogieIcfgContainer [2021-11-07 16:10:00,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 16:10:00,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 16:10:00,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 16:10:00,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 16:10:00,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:06:59" (1/3) ... [2021-11-07 16:10:00,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34558572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:10:00, skipping insertion in model container [2021-11-07 16:10:00,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:07:03" (2/3) ... [2021-11-07 16:10:00,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34558572 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:10:00, skipping insertion in model container [2021-11-07 16:10:00,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:10:00" (3/3) ... [2021-11-07 16:10:00,830 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--bnx2i--bnx2i.ko-entry_point.cil.out.i [2021-11-07 16:10:00,833 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 16:10:00,833 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 16:10:00,893 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 16:10:00,896 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 16:10:00,897 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 16:10:00,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 11368 states, 11363 states have (on average 1.404734665141248) internal successors, (15962), 11367 states have internal predecessors, (15962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:01,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 16:10:01,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:10:01,027 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, 1] [2021-11-07 16:10:01,027 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 16:10:01,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:10:01,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1071074736, now seen corresponding path program 1 times [2021-11-07 16:10:01,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:10:01,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457375265] [2021-11-07 16:10:01,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:10:01,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:10:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:10:01,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:10:01,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:10:01,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457375265] [2021-11-07 16:10:01,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457375265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:10:01,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:10:01,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 16:10:01,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560694911] [2021-11-07 16:10:01,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:10:01,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 16:10:01,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:10:01,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 16:10:01,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 16:10:01,587 INFO L87 Difference]: Start difference. First operand has 11368 states, 11363 states have (on average 1.404734665141248) internal successors, (15962), 11367 states have internal predecessors, (15962), 0 states have call successors, (0), 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 56.5) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:01,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:10:01,834 INFO L93 Difference]: Finished difference Result 22732 states and 31919 transitions. [2021-11-07 16:10:01,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 16:10:01,837 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 56.5) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-07 16:10:01,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:10:01,887 INFO L225 Difference]: With dead ends: 22732 [2021-11-07 16:10:01,887 INFO L226 Difference]: Without dead ends: 9447 [2021-11-07 16:10:01,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.02ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 16:10:01,915 INFO L933 BasicCegarLoop]: 15672 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15672 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.12ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 16:10:01,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15672 Invalid, 0 Unknown, 0 Unchecked, 22.12ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 16:10:01,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9447 states. [2021-11-07 16:10:02,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9447 to 9447. [2021-11-07 16:10:02,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9447 states, 9443 states have (on average 1.375304458328921) internal successors, (12987), 9446 states have internal predecessors, (12987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:02,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9447 states to 9447 states and 12987 transitions. [2021-11-07 16:10:02,149 INFO L78 Accepts]: Start accepts. Automaton has 9447 states and 12987 transitions. Word has length 113 [2021-11-07 16:10:02,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:10:02,150 INFO L470 AbstractCegarLoop]: Abstraction has 9447 states and 12987 transitions. [2021-11-07 16:10:02,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 56.5) internal successors, (113), 2 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:02,151 INFO L276 IsEmpty]: Start isEmpty. Operand 9447 states and 12987 transitions. [2021-11-07 16:10:02,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 16:10:02,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:10:02,156 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, 1] [2021-11-07 16:10:02,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 16:10:02,156 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 16:10:02,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:10:02,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1506644702, now seen corresponding path program 1 times [2021-11-07 16:10:02,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:10:02,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241491923] [2021-11-07 16:10:02,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:10:02,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:10:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:10:02,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:10:02,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:10:02,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241491923] [2021-11-07 16:10:02,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241491923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:10:02,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:10:02,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:10:02,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489383010] [2021-11-07 16:10:02,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:10:02,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:10:02,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:10:02,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:10:02,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:10:02,442 INFO L87 Difference]: Start difference. First operand 9447 states and 12987 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:03,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:10:03,021 INFO L93 Difference]: Finished difference Result 24760 states and 34031 transitions. [2021-11-07 16:10:03,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:10:03,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 113 [2021-11-07 16:10:03,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:10:03,070 INFO L225 Difference]: With dead ends: 24760 [2021-11-07 16:10:03,070 INFO L226 Difference]: Without dead ends: 15327 [2021-11-07 16:10:03,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:10:03,087 INFO L933 BasicCegarLoop]: 12986 mSDtfsCounter, 8076 mSDsluCounter, 12930 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 222.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8076 SdHoareTripleChecker+Valid, 25916 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.01ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 257.33ms IncrementalHoareTripleChecker+Time [2021-11-07 16:10:03,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8076 Valid, 25916 Invalid, 44 Unknown, 0 Unchecked, 41.01ms Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 257.33ms Time] [2021-11-07 16:10:03,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15327 states. [2021-11-07 16:10:03,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15327 to 15279. [2021-11-07 16:10:03,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15279 states, 15275 states have (on average 1.3753846153846154) internal successors, (21009), 15278 states have internal predecessors, (21009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:03,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15279 states to 15279 states and 21009 transitions. [2021-11-07 16:10:03,611 INFO L78 Accepts]: Start accepts. Automaton has 15279 states and 21009 transitions. Word has length 113 [2021-11-07 16:10:03,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:10:03,612 INFO L470 AbstractCegarLoop]: Abstraction has 15279 states and 21009 transitions. [2021-11-07 16:10:03,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:03,612 INFO L276 IsEmpty]: Start isEmpty. Operand 15279 states and 21009 transitions. [2021-11-07 16:10:03,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-07 16:10:03,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:10:03,625 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:10:03,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 16:10:03,625 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 16:10:03,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:10:03,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1265879774, now seen corresponding path program 1 times [2021-11-07 16:10:03,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:10:03,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201080325] [2021-11-07 16:10:03,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:10:03,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:10:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:10:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 16:10:03,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:10:03,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201080325] [2021-11-07 16:10:03,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201080325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:10:03,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:10:03,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:10:03,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044266324] [2021-11-07 16:10:03,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:10:03,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:10:03,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:10:03,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:10:03,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:10:03,919 INFO L87 Difference]: Start difference. First operand 15279 states and 21009 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:04,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:10:04,371 INFO L93 Difference]: Finished difference Result 30546 states and 42007 transitions. [2021-11-07 16:10:04,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:10:04,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 188 [2021-11-07 16:10:04,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:10:04,419 INFO L225 Difference]: With dead ends: 30546 [2021-11-07 16:10:04,419 INFO L226 Difference]: Without dead ends: 15281 [2021-11-07 16:10:04,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.79ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:10:04,449 INFO L933 BasicCegarLoop]: 12985 mSDtfsCounter, 0 mSDsluCounter, 12975 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25960 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.47ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.08ms IncrementalHoareTripleChecker+Time [2021-11-07 16:10:04,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25960 Invalid, 14 Unknown, 0 Unchecked, 22.47ms Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 48.08ms Time] [2021-11-07 16:10:04,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15281 states. [2021-11-07 16:10:04,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15281 to 15281. [2021-11-07 16:10:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15281 states, 15277 states have (on average 1.37533547162401) internal successors, (21011), 15280 states have internal predecessors, (21011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:04,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15281 states to 15281 states and 21011 transitions. [2021-11-07 16:10:04,735 INFO L78 Accepts]: Start accepts. Automaton has 15281 states and 21011 transitions. Word has length 188 [2021-11-07 16:10:04,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:10:04,737 INFO L470 AbstractCegarLoop]: Abstraction has 15281 states and 21011 transitions. [2021-11-07 16:10:04,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:04,738 INFO L276 IsEmpty]: Start isEmpty. Operand 15281 states and 21011 transitions. [2021-11-07 16:10:04,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-07 16:10:04,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:10:04,748 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:10:04,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 16:10:04,749 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 16:10:04,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:10:04,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1524045212, now seen corresponding path program 1 times [2021-11-07 16:10:04,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:10:04,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756070147] [2021-11-07 16:10:04,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:10:04,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:10:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:10:05,313 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:10:05,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:10:05,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756070147] [2021-11-07 16:10:05,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756070147] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:10:05,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:10:05,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 16:10:05,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063729826] [2021-11-07 16:10:05,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:10:05,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 16:10:05,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:10:05,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 16:10:05,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:10:05,314 INFO L87 Difference]: Start difference. First operand 15281 states and 21011 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:07,382 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:10:07,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:10:07,891 INFO L93 Difference]: Finished difference Result 30556 states and 42017 transitions. [2021-11-07 16:10:07,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:10:07,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2021-11-07 16:10:07,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:10:07,923 INFO L225 Difference]: With dead ends: 30556 [2021-11-07 16:10:07,924 INFO L226 Difference]: Without dead ends: 15281 [2021-11-07 16:10:07,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 98.50ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:10:07,950 INFO L933 BasicCegarLoop]: 12984 mSDtfsCounter, 6 mSDsluCounter, 38945 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2115.58ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 51929 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 41.96ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2228.20ms IncrementalHoareTripleChecker+Time [2021-11-07 16:10:07,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 51929 Invalid, 19 Unknown, 0 Unchecked, 41.96ms Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 2228.20ms Time] [2021-11-07 16:10:07,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15281 states. [2021-11-07 16:10:08,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15281 to 15281. [2021-11-07 16:10:08,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15281 states, 15277 states have (on average 1.3752045558682988) internal successors, (21009), 15280 states have internal predecessors, (21009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:08,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15281 states to 15281 states and 21009 transitions. [2021-11-07 16:10:08,269 INFO L78 Accepts]: Start accepts. Automaton has 15281 states and 21009 transitions. Word has length 188 [2021-11-07 16:10:08,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:10:08,269 INFO L470 AbstractCegarLoop]: Abstraction has 15281 states and 21009 transitions. [2021-11-07 16:10:08,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:08,271 INFO L276 IsEmpty]: Start isEmpty. Operand 15281 states and 21009 transitions. [2021-11-07 16:10:08,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-07 16:10:08,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:10:08,282 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:10:08,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 16:10:08,282 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 16:10:08,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:10:08,283 INFO L85 PathProgramCache]: Analyzing trace with hash 296433557, now seen corresponding path program 1 times [2021-11-07 16:10:08,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:10:08,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542700706] [2021-11-07 16:10:08,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:10:08,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:10:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:10:08,775 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 16:10:08,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:10:08,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542700706] [2021-11-07 16:10:08,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542700706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:10:08,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:10:08,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 16:10:08,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785171450] [2021-11-07 16:10:08,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:10:08,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 16:10:08,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:10:08,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 16:10:08,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:10:08,777 INFO L87 Difference]: Start difference. First operand 15281 states and 21009 transitions. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:14,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:10:14,095 INFO L93 Difference]: Finished difference Result 55820 states and 77121 transitions. [2021-11-07 16:10:14,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 16:10:14,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2021-11-07 16:10:14,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:10:14,189 INFO L225 Difference]: With dead ends: 55820 [2021-11-07 16:10:14,190 INFO L226 Difference]: Without dead ends: 40545 [2021-11-07 16:10:14,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 196.77ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 16:10:14,220 INFO L933 BasicCegarLoop]: 17425 mSDtfsCounter, 30450 mSDsluCounter, 47453 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3989.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30450 SdHoareTripleChecker+Valid, 64878 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 77.43ms SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4336.97ms IncrementalHoareTripleChecker+Time [2021-11-07 16:10:14,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30450 Valid, 64878 Invalid, 725 Unknown, 0 Unchecked, 77.43ms Time], IncrementalHoareTripleChecker [148 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 4336.97ms Time] [2021-11-07 16:10:14,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40545 states. [2021-11-07 16:10:14,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40545 to 15281. [2021-11-07 16:10:14,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15281 states, 15277 states have (on average 1.3750736401125876) internal successors, (21007), 15280 states have internal predecessors, (21007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:14,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15281 states to 15281 states and 21007 transitions. [2021-11-07 16:10:14,666 INFO L78 Accepts]: Start accepts. Automaton has 15281 states and 21007 transitions. Word has length 192 [2021-11-07 16:10:14,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:10:14,667 INFO L470 AbstractCegarLoop]: Abstraction has 15281 states and 21007 transitions. [2021-11-07 16:10:14,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:14,668 INFO L276 IsEmpty]: Start isEmpty. Operand 15281 states and 21007 transitions. [2021-11-07 16:10:14,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-11-07 16:10:14,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:10:14,681 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:10:14,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 16:10:14,681 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 16:10:14,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:10:14,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1281381661, now seen corresponding path program 1 times [2021-11-07 16:10:14,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:10:14,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021786170] [2021-11-07 16:10:14,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:10:14,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:10:14,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:10:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 16:10:15,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:10:15,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021786170] [2021-11-07 16:10:15,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021786170] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:10:15,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:10:15,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 16:10:15,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571966444] [2021-11-07 16:10:15,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:10:15,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:10:15,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:10:15,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:10:15,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 16:10:15,241 INFO L87 Difference]: Start difference. First operand 15281 states and 21007 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:17,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:10:19,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:10:20,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:10:20,098 INFO L93 Difference]: Finished difference Result 73558 states and 101231 transitions. [2021-11-07 16:10:20,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:10:20,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 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 198 [2021-11-07 16:10:20,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:10:20,212 INFO L225 Difference]: With dead ends: 73558 [2021-11-07 16:10:20,212 INFO L226 Difference]: Without dead ends: 58291 [2021-11-07 16:10:20,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 76.85ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:10:20,247 INFO L933 BasicCegarLoop]: 24708 mSDtfsCounter, 46628 mSDsluCounter, 49119 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3743.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46628 SdHoareTripleChecker+Valid, 73827 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.12ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3810.59ms IncrementalHoareTripleChecker+Time [2021-11-07 16:10:20,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46628 Valid, 73827 Invalid, 49 Unknown, 0 Unchecked, 58.12ms Time], IncrementalHoareTripleChecker [7 Valid, 41 Invalid, 1 Unknown, 0 Unchecked, 3810.59ms Time] [2021-11-07 16:10:20,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58291 states. [2021-11-07 16:10:20,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58291 to 15283. [2021-11-07 16:10:20,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15283 states, 15279 states have (on average 1.3750245434910662) internal successors, (21009), 15282 states have internal predecessors, (21009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:20,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15283 states to 15283 states and 21009 transitions. [2021-11-07 16:10:20,861 INFO L78 Accepts]: Start accepts. Automaton has 15283 states and 21009 transitions. Word has length 198 [2021-11-07 16:10:20,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:10:20,862 INFO L470 AbstractCegarLoop]: Abstraction has 15283 states and 21009 transitions. [2021-11-07 16:10:20,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:20,862 INFO L276 IsEmpty]: Start isEmpty. Operand 15283 states and 21009 transitions. [2021-11-07 16:10:20,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-07 16:10:20,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:10:20,872 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:10:20,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 16:10:20,873 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 16:10:20,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:10:20,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1679873506, now seen corresponding path program 1 times [2021-11-07 16:10:20,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:10:20,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575850550] [2021-11-07 16:10:20,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:10:20,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:10:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:10:21,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 16:10:21,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:10:21,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575850550] [2021-11-07 16:10:21,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575850550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:10:21,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:10:21,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 16:10:21,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320908900] [2021-11-07 16:10:21,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:10:21,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 16:10:21,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:10:21,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 16:10:21,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:10:21,397 INFO L87 Difference]: Start difference. First operand 15283 states and 21009 transitions. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:26,332 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:10:30,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:10:30,273 INFO L93 Difference]: Finished difference Result 71156 states and 98463 transitions. [2021-11-07 16:10:30,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 16:10:30,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 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 199 [2021-11-07 16:10:30,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:10:30,361 INFO L225 Difference]: With dead ends: 71156 [2021-11-07 16:10:30,361 INFO L226 Difference]: Without dead ends: 55887 [2021-11-07 16:10:30,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 161.77ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:10:30,394 INFO L933 BasicCegarLoop]: 28537 mSDtfsCounter, 35381 mSDsluCounter, 69699 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6914.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35381 SdHoareTripleChecker+Valid, 98236 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 94.29ms SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7327.11ms IncrementalHoareTripleChecker+Time [2021-11-07 16:10:30,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35381 Valid, 98236 Invalid, 1203 Unknown, 0 Unchecked, 94.29ms Time], IncrementalHoareTripleChecker [132 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 7327.11ms Time] [2021-11-07 16:10:30,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55887 states. [2021-11-07 16:10:30,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55887 to 15289. [2021-11-07 16:10:30,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15289 states, 15285 states have (on average 1.3748773307163886) internal successors, (21015), 15288 states have internal predecessors, (21015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:30,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15289 states to 15289 states and 21015 transitions. [2021-11-07 16:10:30,864 INFO L78 Accepts]: Start accepts. Automaton has 15289 states and 21015 transitions. Word has length 199 [2021-11-07 16:10:30,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:10:30,864 INFO L470 AbstractCegarLoop]: Abstraction has 15289 states and 21015 transitions. [2021-11-07 16:10:30,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:30,864 INFO L276 IsEmpty]: Start isEmpty. Operand 15289 states and 21015 transitions. [2021-11-07 16:10:30,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-07 16:10:30,873 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:10:30,873 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:10:30,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 16:10:30,874 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 16:10:30,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:10:30,874 INFO L85 PathProgramCache]: Analyzing trace with hash -463477491, now seen corresponding path program 1 times [2021-11-07 16:10:30,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:10:30,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773031983] [2021-11-07 16:10:30,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:10:30,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:10:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:10:31,170 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 16:10:31,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:10:31,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773031983] [2021-11-07 16:10:31,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773031983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:10:31,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:10:31,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 16:10:31,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944221491] [2021-11-07 16:10:31,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:10:31,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 16:10:31,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:10:31,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 16:10:31,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 16:10:31,172 INFO L87 Difference]: Start difference. First operand 15289 states and 21015 transitions. Second operand has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:32,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:10:32,443 INFO L93 Difference]: Finished difference Result 60862 states and 83699 transitions. [2021-11-07 16:10:32,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 16:10:32,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 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 199 [2021-11-07 16:10:32,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:10:32,518 INFO L225 Difference]: With dead ends: 60862 [2021-11-07 16:10:32,518 INFO L226 Difference]: Without dead ends: 45587 [2021-11-07 16:10:32,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 89.65ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:10:32,544 INFO L933 BasicCegarLoop]: 25832 mSDtfsCounter, 64013 mSDsluCounter, 51792 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 64013 SdHoareTripleChecker+Valid, 77624 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.53ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.91ms IncrementalHoareTripleChecker+Time [2021-11-07 16:10:32,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64013 Valid, 77624 Invalid, 17 Unknown, 0 Unchecked, 56.53ms Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 61.91ms Time] [2021-11-07 16:10:32,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45587 states. [2021-11-07 16:10:32,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45587 to 15292. [2021-11-07 16:10:32,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15292 states, 15288 states have (on average 1.3748037676609106) internal successors, (21018), 15291 states have internal predecessors, (21018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:32,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15292 states to 15292 states and 21018 transitions. [2021-11-07 16:10:32,992 INFO L78 Accepts]: Start accepts. Automaton has 15292 states and 21018 transitions. Word has length 199 [2021-11-07 16:10:32,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:10:32,993 INFO L470 AbstractCegarLoop]: Abstraction has 15292 states and 21018 transitions. [2021-11-07 16:10:32,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.6) internal successors, (193), 5 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:32,993 INFO L276 IsEmpty]: Start isEmpty. Operand 15292 states and 21018 transitions. [2021-11-07 16:10:33,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-11-07 16:10:33,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:10:33,003 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:10:33,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 16:10:33,004 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 16:10:33,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:10:33,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1409454706, now seen corresponding path program 1 times [2021-11-07 16:10:33,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:10:33,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923990347] [2021-11-07 16:10:33,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:10:33,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:10:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:10:33,327 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 16:10:33,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:10:33,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923990347] [2021-11-07 16:10:33,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923990347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:10:33,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:10:33,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 16:10:33,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459669676] [2021-11-07 16:10:33,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:10:33,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:10:33,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:10:33,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:10:33,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:10:33,333 INFO L87 Difference]: Start difference. First operand 15292 states and 21018 transitions. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:34,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:10:34,259 INFO L93 Difference]: Finished difference Result 27988 states and 38499 transitions. [2021-11-07 16:10:34,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:10:34,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 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 203 [2021-11-07 16:10:34,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:10:34,297 INFO L225 Difference]: With dead ends: 27988 [2021-11-07 16:10:34,297 INFO L226 Difference]: Without dead ends: 27984 [2021-11-07 16:10:34,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.65ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:10:34,309 INFO L933 BasicCegarLoop]: 12993 mSDtfsCounter, 10451 mSDsluCounter, 12630 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 309.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10451 SdHoareTripleChecker+Valid, 25623 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.48ms SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 352.99ms IncrementalHoareTripleChecker+Time [2021-11-07 16:10:34,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10451 Valid, 25623 Invalid, 149 Unknown, 0 Unchecked, 17.48ms Time], IncrementalHoareTripleChecker [72 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 352.99ms Time] [2021-11-07 16:10:34,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27984 states. [2021-11-07 16:10:34,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27984 to 27665. [2021-11-07 16:10:35,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27665 states, 27661 states have (on average 1.3761975344347637) internal successors, (38067), 27664 states have internal predecessors, (38067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:35,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27665 states to 27665 states and 38067 transitions. [2021-11-07 16:10:35,055 INFO L78 Accepts]: Start accepts. Automaton has 27665 states and 38067 transitions. Word has length 203 [2021-11-07 16:10:35,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:10:35,055 INFO L470 AbstractCegarLoop]: Abstraction has 27665 states and 38067 transitions. [2021-11-07 16:10:35,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:35,055 INFO L276 IsEmpty]: Start isEmpty. Operand 27665 states and 38067 transitions. [2021-11-07 16:10:35,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-07 16:10:35,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:10:35,066 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:10:35,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 16:10:35,067 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 16:10:35,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:10:35,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1561750938, now seen corresponding path program 1 times [2021-11-07 16:10:35,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:10:35,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998210513] [2021-11-07 16:10:35,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:10:35,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:10:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:10:35,424 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-07 16:10:35,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:10:35,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998210513] [2021-11-07 16:10:35,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998210513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:10:35,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 16:10:35,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 16:10:35,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265072236] [2021-11-07 16:10:35,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:10:35,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 16:10:35,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:10:35,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 16:10:35,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:10:35,426 INFO L87 Difference]: Start difference. First operand 27665 states and 38067 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:38,858 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:10:40,675 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:10:43,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:10:43,369 INFO L93 Difference]: Finished difference Result 55333 states and 76151 transitions. [2021-11-07 16:10:43,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 16:10:43,371 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 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 205 [2021-11-07 16:10:43,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:10:43,411 INFO L225 Difference]: With dead ends: 55333 [2021-11-07 16:10:43,411 INFO L226 Difference]: Without dead ends: 27680 [2021-11-07 16:10:43,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 16:10:43,443 INFO L933 BasicCegarLoop]: 12980 mSDtfsCounter, 0 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6691.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25335 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.01ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7244.63ms IncrementalHoareTripleChecker+Time [2021-11-07 16:10:43,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 25335 Invalid, 638 Unknown, 0 Unchecked, 18.01ms Time], IncrementalHoareTripleChecker [8 Valid, 629 Invalid, 1 Unknown, 0 Unchecked, 7244.63ms Time] [2021-11-07 16:10:43,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27680 states. [2021-11-07 16:10:44,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27680 to 27680. [2021-11-07 16:10:44,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27680 states, 27676 states have (on average 1.375993640699523) internal successors, (38082), 27679 states have internal predecessors, (38082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:44,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27680 states to 27680 states and 38082 transitions. [2021-11-07 16:10:44,219 INFO L78 Accepts]: Start accepts. Automaton has 27680 states and 38082 transitions. Word has length 205 [2021-11-07 16:10:44,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:10:44,219 INFO L470 AbstractCegarLoop]: Abstraction has 27680 states and 38082 transitions. [2021-11-07 16:10:44,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:44,220 INFO L276 IsEmpty]: Start isEmpty. Operand 27680 states and 38082 transitions. [2021-11-07 16:10:44,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-07 16:10:44,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:10:44,231 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:10:44,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 16:10:44,232 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 16:10:44,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:10:44,232 INFO L85 PathProgramCache]: Analyzing trace with hash 418668068, now seen corresponding path program 1 times [2021-11-07 16:10:44,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:10:44,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588262792] [2021-11-07 16:10:44,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:10:44,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:10:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:10:44,693 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 16:10:44,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:10:44,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588262792] [2021-11-07 16:10:44,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588262792] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:10:44,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198307729] [2021-11-07 16:10:44,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:10:44,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:10:44,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:10:44,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:10:44,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 16:10:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:10:46,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 4321 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 16:10:46,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:10:47,404 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 16:10:47,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 16:10:47,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198307729] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 16:10:47,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:10:47,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-07 16:10:47,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048042146] [2021-11-07 16:10:47,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 16:10:47,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 16:10:47,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:10:47,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 16:10:47,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 16:10:47,407 INFO L87 Difference]: Start difference. First operand 27680 states and 38082 transitions. Second operand has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:49,471 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 16:10:50,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 16:10:50,348 INFO L93 Difference]: Finished difference Result 55359 states and 76166 transitions. [2021-11-07 16:10:50,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 16:10:50,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 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 207 [2021-11-07 16:10:50,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 16:10:50,398 INFO L225 Difference]: With dead ends: 55359 [2021-11-07 16:10:50,398 INFO L226 Difference]: Without dead ends: 27666 [2021-11-07 16:10:50,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 186.96ms TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-07 16:10:50,434 INFO L933 BasicCegarLoop]: 12982 mSDtfsCounter, 6 mSDsluCounter, 38938 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2102.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 51920 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.26ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2238.49ms IncrementalHoareTripleChecker+Time [2021-11-07 16:10:50,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 51920 Invalid, 17 Unknown, 0 Unchecked, 19.26ms Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 2238.49ms Time] [2021-11-07 16:10:50,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27666 states. [2021-11-07 16:10:51,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27666 to 27522. [2021-11-07 16:10:51,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27522 states, 27518 states have (on average 1.3767715677011412) internal successors, (37886), 27521 states have internal predecessors, (37886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:51,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27522 states to 27522 states and 37886 transitions. [2021-11-07 16:10:51,278 INFO L78 Accepts]: Start accepts. Automaton has 27522 states and 37886 transitions. Word has length 207 [2021-11-07 16:10:51,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 16:10:51,278 INFO L470 AbstractCegarLoop]: Abstraction has 27522 states and 37886 transitions. [2021-11-07 16:10:51,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.4) internal successors, (207), 5 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:10:51,278 INFO L276 IsEmpty]: Start isEmpty. Operand 27522 states and 37886 transitions. [2021-11-07 16:10:51,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-07 16:10:51,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 16:10:51,287 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 16:10:51,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 16:10:51,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-07 16:10:51,488 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 16:10:51,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 16:10:51,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1327568015, now seen corresponding path program 1 times [2021-11-07 16:10:51,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 16:10:51,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800565369] [2021-11-07 16:10:51,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:10:51,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 16:10:51,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:10:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 16:10:51,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 16:10:51,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800565369] [2021-11-07 16:10:51,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800565369] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 16:10:51,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235008390] [2021-11-07 16:10:51,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 16:10:51,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 16:10:51,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:10:51,933 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 16:10:51,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 16:10:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 16:10:54,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 4400 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-07 16:10:54,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 16:10:54,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-07 16:10:54,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 16:10:54,737 INFO L354 Elim1Store]: treesize reduction 16, result has 23.8 percent of original size [2021-11-07 16:10:54,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2021-11-07 16:10:54,763 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-07 16:10:54,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2021-11-07 16:10:59,577 INFO L354 Elim1Store]: treesize reduction 50, result has 31.5 percent of original size [2021-11-07 16:10:59,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 50 [2021-11-07 16:10:59,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2021-11-07 16:11:07,734 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 16:11:07,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 36 [2021-11-07 16:11:07,741 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Should have been eliminated by DER [2021-11-07 16:11:07,741 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-11-07 16:11:07,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-07 16:11:07,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693763161] [2021-11-07 16:11:07,741 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-11-07 16:11:07,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 16:11:07,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 16:11:07,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 16:11:07,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-07 16:11:07,743 INFO L87 Difference]: Start difference. First operand 27522 states and 37886 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 16:11:07,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 16:11:07,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 10722.85ms TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-07 16:11:07,744 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.04ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 16:11:07,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 1 Unknown, 0 Unchecked, 0.04ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 16:11:07,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-07 16:11:07,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-07 16:11:07,946 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@7449e45 at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:359) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:206) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:131) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker$ProtectedHtc.checkInternal(ChainingHoareTripleChecker.java:436) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ChainingHoareTripleChecker.checkInternal(ChainingHoareTripleChecker.java:98) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:95) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:868) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:784) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 16:11:07,948 INFO L158 Benchmark]: Toolchain (without parser) took 247974.34ms. Allocated memory was 113.2MB in the beginning and 6.3GB in the end (delta: 6.2GB). Free memory was 84.2MB in the beginning and 4.3GB in the end (delta: -4.2GB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2021-11-07 16:11:07,948 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory is still 54.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-07 16:11:07,948 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3401.96ms. Allocated memory was 113.2MB in the beginning and 230.7MB in the end (delta: 117.4MB). Free memory was 84.2MB in the beginning and 71.2MB in the end (delta: 13.0MB). Peak memory consumption was 131.5MB. Max. memory is 16.1GB. [2021-11-07 16:11:07,949 INFO L158 Benchmark]: Boogie Procedure Inliner took 1888.94ms. Allocated memory was 230.7MB in the beginning and 897.6MB in the end (delta: 666.9MB). Free memory was 71.2MB in the beginning and 590.7MB in the end (delta: -519.5MB). Peak memory consumption was 275.4MB. Max. memory is 16.1GB. [2021-11-07 16:11:07,949 INFO L158 Benchmark]: Boogie Preprocessor took 2137.19ms. Allocated memory was 897.6MB in the beginning and 2.7GB in the end (delta: 1.8GB). Free memory was 590.7MB in the beginning and 2.2GB in the end (delta: -1.6GB). Peak memory consumption was 309.3MB. Max. memory is 16.1GB. [2021-11-07 16:11:07,950 INFO L158 Benchmark]: RCFGBuilder took 173409.98ms. Allocated memory was 2.7GB in the beginning and 6.3GB in the end (delta: 3.6GB). Free memory was 2.2GB in the beginning and 5.3GB in the end (delta: -3.1GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2021-11-07 16:11:07,950 INFO L158 Benchmark]: TraceAbstraction took 67121.92ms. Allocated memory is still 6.3GB. Free memory was 5.3GB in the beginning and 4.3GB in the end (delta: 1.0GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2021-11-07 16:11:07,953 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 94.4MB. Free memory is still 54.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3401.96ms. Allocated memory was 113.2MB in the beginning and 230.7MB in the end (delta: 117.4MB). Free memory was 84.2MB in the beginning and 71.2MB in the end (delta: 13.0MB). Peak memory consumption was 131.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 1888.94ms. Allocated memory was 230.7MB in the beginning and 897.6MB in the end (delta: 666.9MB). Free memory was 71.2MB in the beginning and 590.7MB in the end (delta: -519.5MB). Peak memory consumption was 275.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 2137.19ms. Allocated memory was 897.6MB in the beginning and 2.7GB in the end (delta: 1.8GB). Free memory was 590.7MB in the beginning and 2.2GB in the end (delta: -1.6GB). Peak memory consumption was 309.3MB. Max. memory is 16.1GB. * RCFGBuilder took 173409.98ms. Allocated memory was 2.7GB in the beginning and 6.3GB in the end (delta: 3.6GB). Free memory was 2.2GB in the beginning and 5.3GB in the end (delta: -3.1GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. * TraceAbstraction took 67121.92ms. Allocated memory is still 6.3GB. Free memory was 5.3GB in the beginning and 4.3GB in the end (delta: 1.0GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@7449e45 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.smtlibutils.IncrementalPlicationChecker@7449e45: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.lock(ManagedScript.java:82) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-07 16:11:08,163 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-11-07 16:11:08,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--bnx2i--bnx2i.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 063e80a6567f3b510ecc2efbcb0a8f49fa12a56c608116a0a2a3dc1d5e72e4c2 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 16:11:09,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 16:11:09,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 16:11:09,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 16:11:09,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 16:11:09,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 16:11:09,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 16:11:09,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 16:11:09,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 16:11:09,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 16:11:09,853 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 16:11:09,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 16:11:09,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 16:11:09,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 16:11:09,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 16:11:09,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 16:11:09,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 16:11:09,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 16:11:09,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 16:11:09,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 16:11:09,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 16:11:09,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 16:11:09,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 16:11:09,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 16:11:09,874 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 16:11:09,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 16:11:09,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 16:11:09,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 16:11:09,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 16:11:09,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 16:11:09,878 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 16:11:09,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 16:11:09,879 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 16:11:09,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 16:11:09,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 16:11:09,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 16:11:09,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 16:11:09,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 16:11:09,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 16:11:09,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 16:11:09,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 16:11:09,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-07 16:11:09,910 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 16:11:09,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 16:11:09,911 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 16:11:09,912 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 16:11:09,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 16:11:09,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 16:11:09,913 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 16:11:09,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 16:11:09,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 16:11:09,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 16:11:09,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 16:11:09,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 16:11:09,915 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 16:11:09,915 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 16:11:09,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 16:11:09,915 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 16:11:09,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 16:11:09,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 16:11:09,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 16:11:09,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 16:11:09,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:11:09,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 16:11:09,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 16:11:09,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 16:11:09,926 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 16:11:09,926 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 16:11:09,926 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 16:11:09,927 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 16:11:09,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 16:11:09,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 16:11:09,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 16:11:09,927 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 063e80a6567f3b510ecc2efbcb0a8f49fa12a56c608116a0a2a3dc1d5e72e4c2 [2021-11-07 16:11:10,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 16:11:10,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 16:11:10,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 16:11:10,185 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 16:11:10,185 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 16:11:10,186 INFO L432 ainManager$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-43_2a-drivers--scsi--bnx2i--bnx2i.ko-entry_point.cil.out.i [2021-11-07 16:11:10,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/013ec3e0b/55c06b1115e14cf5a9b7351a1ecd5bd3/FLAG43d37bd12 [2021-11-07 16:11:10,924 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 16:11:10,925 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--bnx2i--bnx2i.ko-entry_point.cil.out.i [2021-11-07 16:11:10,979 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/013ec3e0b/55c06b1115e14cf5a9b7351a1ecd5bd3/FLAG43d37bd12 [2021-11-07 16:11:11,484 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/013ec3e0b/55c06b1115e14cf5a9b7351a1ecd5bd3 [2021-11-07 16:11:11,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 16:11:11,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 16:11:11,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 16:11:11,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 16:11:11,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 16:11:11,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:11:11" (1/1) ... [2021-11-07 16:11:11,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5a51cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:11, skipping insertion in model container [2021-11-07 16:11:11,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:11:11" (1/1) ... [2021-11-07 16:11:11,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 16:11:11,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 16:11:14,690 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-43_2a-drivers--scsi--bnx2i--bnx2i.ko-entry_point.cil.out.i[478905,478918] [2021-11-07 16:11:14,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:11:14,813 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 16:11:15,486 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-43_2a-drivers--scsi--bnx2i--bnx2i.ko-entry_point.cil.out.i[478905,478918] [2021-11-07 16:11:15,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 16:11:15,607 INFO L208 MainTranslator]: Completed translation [2021-11-07 16:11:15,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:15 WrapperNode [2021-11-07 16:11:15,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 16:11:15,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 16:11:15,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 16:11:15,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 16:11:15,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:15" (1/1) ... [2021-11-07 16:11:15,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:15" (1/1) ... [2021-11-07 16:11:17,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 16:11:17,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 16:11:17,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 16:11:17,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 16:11:17,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:15" (1/1) ... [2021-11-07 16:11:17,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:15" (1/1) ... [2021-11-07 16:11:17,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:15" (1/1) ... [2021-11-07 16:11:17,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:15" (1/1) ... [2021-11-07 16:11:18,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:15" (1/1) ... [2021-11-07 16:11:18,706 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:15" (1/1) ... [2021-11-07 16:11:18,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:15" (1/1) ... [2021-11-07 16:11:19,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 16:11:19,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 16:11:19,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 16:11:19,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 16:11:19,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:11:15" (1/1) ... [2021-11-07 16:11:19,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 16:11:19,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 16:11:19,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 16:11:19,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 16:11:19,215 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-07 16:11:19,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 16:11:19,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-07 16:11:19,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 16:11:19,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 16:11:19,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 16:11:19,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 16:11:19,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 16:11:19,216 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-07 16:11:19,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 16:11:19,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 16:11:19,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 16:11:19,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 16:11:19,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 16:11:19,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 16:11:19,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 16:11:19,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 16:11:19,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 16:11:19,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 16:11:19,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 16:11:19,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 16:11:19,217 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-07 16:11:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 16:11:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 16:11:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 16:11:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 16:11:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 16:11:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 16:11:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 16:11:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 16:11:19,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 16:11:19,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 16:11:19,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 Killed by 15