./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--net--fddi--defxx.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--net--fddi--defxx.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 e8e67529e4f1862dffb4b20b34b9723f96164119a4ebff5a58d56eaf6134a8d1 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 15:55:26,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 15:55:26,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 15:55:26,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 15:55:26,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 15:55:26,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 15:55:26,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 15:55:26,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 15:55:26,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 15:55:26,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 15:55:26,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 15:55:26,638 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 15:55:26,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 15:55:26,639 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 15:55:26,640 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 15:55:26,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 15:55:26,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 15:55:26,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 15:55:26,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 15:55:26,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 15:55:26,645 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 15:55:26,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 15:55:26,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 15:55:26,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 15:55:26,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 15:55:26,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 15:55:26,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 15:55:26,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 15:55:26,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 15:55:26,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 15:55:26,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 15:55:26,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 15:55:26,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 15:55:26,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 15:55:26,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 15:55:26,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 15:55:26,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 15:55:26,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 15:55:26,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 15:55:26,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 15:55:26,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 15:55:26,659 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 15:55:26,673 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 15:55:26,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 15:55:26,677 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 15:55:26,678 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 15:55:26,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 15:55:26,679 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 15:55:26,679 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 15:55:26,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 15:55:26,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 15:55:26,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 15:55:26,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 15:55:26,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 15:55:26,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 15:55:26,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 15:55:26,681 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 15:55:26,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 15:55:26,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 15:55:26,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 15:55:26,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 15:55:26,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:55:26,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 15:55:26,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 15:55:26,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 15:55:26,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 15:55:26,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 15:55:26,687 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 15:55:26,687 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 15:55:26,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 15:55:26,689 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 15:55:26,689 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e8e67529e4f1862dffb4b20b34b9723f96164119a4ebff5a58d56eaf6134a8d1 [2021-11-07 15:55:26,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 15:55:26,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 15:55:26,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 15:55:26,893 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 15:55:26,893 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 15:55:26,894 INFO L432 ainManager$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--net--fddi--defxx.ko-entry_point.cil.out.i [2021-11-07 15:55:26,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46f710ba6/12c68ff2fb2d493fab766edcb4ed0cdc/FLAG6bd9028ee [2021-11-07 15:55:27,532 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 15:55:27,533 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--net--fddi--defxx.ko-entry_point.cil.out.i [2021-11-07 15:55:27,572 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46f710ba6/12c68ff2fb2d493fab766edcb4ed0cdc/FLAG6bd9028ee [2021-11-07 15:55:27,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46f710ba6/12c68ff2fb2d493fab766edcb4ed0cdc [2021-11-07 15:55:27,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 15:55:27,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 15:55:27,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 15:55:27,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 15:55:27,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 15:55:27,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:55:27" (1/1) ... [2021-11-07 15:55:27,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ae9169c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:55:27, skipping insertion in model container [2021-11-07 15:55:27,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:55:27" (1/1) ... [2021-11-07 15:55:27,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 15:55:27,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 15:55:28,905 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--net--fddi--defxx.ko-entry_point.cil.out.i[283284,283297] [2021-11-07 15:55:28,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:55:28,972 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 15:55:29,224 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--net--fddi--defxx.ko-entry_point.cil.out.i[283284,283297] [2021-11-07 15:55:29,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 15:55:29,287 INFO L208 MainTranslator]: Completed translation [2021-11-07 15:55:29,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:55:29 WrapperNode [2021-11-07 15:55:29,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 15:55:29,289 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 15:55:29,289 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 15:55:29,289 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 15:55:29,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:55:29" (1/1) ... [2021-11-07 15:55:29,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:55:29" (1/1) ... [2021-11-07 15:55:32,032 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 15:55:32,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 15:55:32,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 15:55:32,033 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 15:55:32,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:55:29" (1/1) ... [2021-11-07 15:55:32,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:55:29" (1/1) ... [2021-11-07 15:55:32,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:55:29" (1/1) ... [2021-11-07 15:55:32,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:55:29" (1/1) ... [2021-11-07 15:55:33,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:55:29" (1/1) ... [2021-11-07 15:55:34,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:55:29" (1/1) ... [2021-11-07 15:55:34,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:55:29" (1/1) ... [2021-11-07 15:55:34,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 15:55:34,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 15:55:34,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 15:55:34,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 15:55:34,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:55:29" (1/1) ... [2021-11-07 15:55:34,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 15:55:34,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 15:55:34,867 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 15:55:34,882 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 15:55:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 15:55:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 15:55:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 15:55:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 15:55:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 15:55:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 15:55:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 15:55:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 15:55:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 15:55:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 15:55:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 15:55:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 15:55:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 15:55:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 15:55:34,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 15:56:43,332 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 15:56:43,333 INFO L299 CfgBuilder]: Removed 22630 assume(true) statements. [2021-11-07 15:56:43,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:56:43 BoogieIcfgContainer [2021-11-07 15:56:43,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 15:56:43,345 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 15:56:43,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 15:56:43,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 15:56:43,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:55:27" (1/3) ... [2021-11-07 15:56:43,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c03cabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:56:43, skipping insertion in model container [2021-11-07 15:56:43,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:55:29" (2/3) ... [2021-11-07 15:56:43,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c03cabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:56:43, skipping insertion in model container [2021-11-07 15:56:43,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:56:43" (3/3) ... [2021-11-07 15:56:43,350 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--fddi--defxx.ko-entry_point.cil.out.i [2021-11-07 15:56:43,356 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 15:56:43,356 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2021-11-07 15:56:43,422 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 15:56:43,426 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 15:56:43,427 INFO L340 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2021-11-07 15:56:43,582 INFO L276 IsEmpty]: Start isEmpty. Operand has 15305 states, 15254 states have (on average 1.3831126261964075) internal successors, (21098), 15304 states have internal predecessors, (21098), 0 states have call successors, (0), 0 states 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 15:56:43,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 15:56:43,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:56:43,604 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] [2021-11-07 15:56:43,605 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 47 more)] === [2021-11-07 15:56:43,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:56:43,609 INFO L85 PathProgramCache]: Analyzing trace with hash 841978211, now seen corresponding path program 1 times [2021-11-07 15:56:43,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:56:43,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10302475] [2021-11-07 15:56:43,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:56:43,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:56:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:56:44,028 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 15:56:44,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:56:44,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10302475] [2021-11-07 15:56:44,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10302475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:56:44,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:56:44,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 15:56:44,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889698292] [2021-11-07 15:56:44,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:56:44,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 15:56:44,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:56:44,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 15:56:44,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 15:56:44,083 INFO L87 Difference]: Start difference. First operand has 15305 states, 15254 states have (on average 1.3831126261964075) internal successors, (21098), 15304 states have internal predecessors, (21098), 0 states have call successors, (0), 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 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 15:56:44,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:56:44,414 INFO L93 Difference]: Finished difference Result 30606 states and 42191 transitions. [2021-11-07 15:56:44,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 15:56:44,417 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2021-11-07 15:56:44,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:56:44,485 INFO L225 Difference]: With dead ends: 30606 [2021-11-07 15:56:44,485 INFO L226 Difference]: Without dead ends: 15113 [2021-11-07 15:56:44,520 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 15:56:44,525 INFO L933 BasicCegarLoop]: 20984 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, 20984 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.66ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-07 15:56:44,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20984 Invalid, 0 Unknown, 0 Unchecked, 29.66ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-07 15:56:44,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15113 states. [2021-11-07 15:56:44,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15113 to 15113. [2021-11-07 15:56:44,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15113 states, 15063 states have (on average 1.3680541724756026) internal successors, (20607), 15112 states have internal predecessors, (20607), 0 states have call successors, (0), 0 states 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 15:56:44,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15113 states to 15113 states and 20607 transitions. [2021-11-07 15:56:44,869 INFO L78 Accepts]: Start accepts. Automaton has 15113 states and 20607 transitions. Word has length 57 [2021-11-07 15:56:44,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:56:44,870 INFO L470 AbstractCegarLoop]: Abstraction has 15113 states and 20607 transitions. [2021-11-07 15:56:44,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 15:56:44,870 INFO L276 IsEmpty]: Start isEmpty. Operand 15113 states and 20607 transitions. [2021-11-07 15:56:44,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 15:56:44,875 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:56:44,875 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] [2021-11-07 15:56:44,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 15:56:44,876 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 47 more)] === [2021-11-07 15:56:44,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:56:44,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1129777635, now seen corresponding path program 1 times [2021-11-07 15:56:44,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:56:44,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251931836] [2021-11-07 15:56:44,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:56:44,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:56:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:56:45,000 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 15:56:45,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:56:45,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251931836] [2021-11-07 15:56:45,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251931836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:56:45,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:56:45,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:56:45,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617454380] [2021-11-07 15:56:45,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:56:45,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:56:45,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:56:45,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:56:45,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:56:45,003 INFO L87 Difference]: Start difference. First operand 15113 states and 20607 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 15:56:46,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:56:46,124 INFO L93 Difference]: Finished difference Result 45834 states and 62643 transitions. [2021-11-07 15:56:46,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:56:46,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2021-11-07 15:56:46,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:56:46,213 INFO L225 Difference]: With dead ends: 45834 [2021-11-07 15:56:46,214 INFO L226 Difference]: Without dead ends: 30736 [2021-11-07 15:56:46,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.71ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:56:46,252 INFO L933 BasicCegarLoop]: 25902 mSDtfsCounter, 18779 mSDsluCounter, 41765 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 111.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18779 SdHoareTripleChecker+Valid, 67667 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 426.29ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 151.41ms IncrementalHoareTripleChecker+Time [2021-11-07 15:56:46,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18779 Valid, 67667 Invalid, 75 Unknown, 0 Unchecked, 426.29ms Time], IncrementalHoareTripleChecker [13 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 151.41ms Time] [2021-11-07 15:56:46,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30736 states. [2021-11-07 15:56:46,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30736 to 17013. [2021-11-07 15:56:46,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17013 states, 16963 states have (on average 1.371278665330425) internal successors, (23261), 17012 states have internal predecessors, (23261), 0 states have call successors, (0), 0 states 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 15:56:46,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17013 states to 17013 states and 23261 transitions. [2021-11-07 15:56:46,792 INFO L78 Accepts]: Start accepts. Automaton has 17013 states and 23261 transitions. Word has length 57 [2021-11-07 15:56:46,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:56:46,792 INFO L470 AbstractCegarLoop]: Abstraction has 17013 states and 23261 transitions. [2021-11-07 15:56:46,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 15:56:46,794 INFO L276 IsEmpty]: Start isEmpty. Operand 17013 states and 23261 transitions. [2021-11-07 15:56:46,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-07 15:56:46,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:56:46,803 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:56:46,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 15:56:46,803 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 47 more)] === [2021-11-07 15:56:46,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:56:46,804 INFO L85 PathProgramCache]: Analyzing trace with hash -460897366, now seen corresponding path program 1 times [2021-11-07 15:56:46,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:56:46,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056554024] [2021-11-07 15:56:46,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:56:46,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:56:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:56:46,901 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 15:56:46,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:56:46,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056554024] [2021-11-07 15:56:46,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056554024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:56:46,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:56:46,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:56:46,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205787046] [2021-11-07 15:56:46,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:56:46,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:56:46,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:56:46,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:56:46,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:56:46,903 INFO L87 Difference]: Start difference. First operand 17013 states and 23261 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:56:47,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:56:47,674 INFO L93 Difference]: Finished difference Result 55334 states and 75915 transitions. [2021-11-07 15:56:47,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:56:47,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-11-07 15:56:47,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:56:47,749 INFO L225 Difference]: With dead ends: 55334 [2021-11-07 15:56:47,750 INFO L226 Difference]: Without dead ends: 38336 [2021-11-07 15:56:47,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.58ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:56:47,790 INFO L933 BasicCegarLoop]: 23249 mSDtfsCounter, 21438 mSDsluCounter, 41157 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21438 SdHoareTripleChecker+Valid, 64406 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 56.63ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.69ms IncrementalHoareTripleChecker+Time [2021-11-07 15:56:47,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21438 Valid, 64406 Invalid, 67 Unknown, 0 Unchecked, 56.63ms Time], IncrementalHoareTripleChecker [16 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 56.69ms Time] [2021-11-07 15:56:47,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38336 states. [2021-11-07 15:56:48,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38336 to 30638. [2021-11-07 15:56:48,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30638 states, 30588 states have (on average 1.3724663266640513) internal successors, (41981), 30637 states have internal predecessors, (41981), 0 states have call successors, (0), 0 states 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 15:56:48,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30638 states to 30638 states and 41981 transitions. [2021-11-07 15:56:48,568 INFO L78 Accepts]: Start accepts. Automaton has 30638 states and 41981 transitions. Word has length 58 [2021-11-07 15:56:48,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:56:48,568 INFO L470 AbstractCegarLoop]: Abstraction has 30638 states and 41981 transitions. [2021-11-07 15:56:48,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:56:48,570 INFO L276 IsEmpty]: Start isEmpty. Operand 30638 states and 41981 transitions. [2021-11-07 15:56:48,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 15:56:48,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:56:48,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:56:48,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 15:56:48,576 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 47 more)] === [2021-11-07 15:56:48,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:56:48,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1200433619, now seen corresponding path program 1 times [2021-11-07 15:56:48,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:56:48,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328160847] [2021-11-07 15:56:48,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:56:48,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:56:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:56:48,702 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 15:56:48,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:56:48,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328160847] [2021-11-07 15:56:48,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328160847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:56:48,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:56:48,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:56:48,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634998174] [2021-11-07 15:56:48,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:56:48,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:56:48,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:56:48,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:56:48,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:56:48,704 INFO L87 Difference]: Start difference. First operand 30638 states and 41981 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:56:50,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:56:50,067 INFO L93 Difference]: Finished difference Result 100548 states and 138235 transitions. [2021-11-07 15:56:50,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:56:50,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 15:56:50,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:56:50,239 INFO L225 Difference]: With dead ends: 100548 [2021-11-07 15:56:50,239 INFO L226 Difference]: Without dead ends: 69925 [2021-11-07 15:56:50,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.63ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:56:50,308 INFO L933 BasicCegarLoop]: 23247 mSDtfsCounter, 21445 mSDsluCounter, 41157 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21445 SdHoareTripleChecker+Valid, 64404 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 50.68ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.82ms IncrementalHoareTripleChecker+Time [2021-11-07 15:56:50,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21445 Valid, 64404 Invalid, 67 Unknown, 0 Unchecked, 50.68ms Time], IncrementalHoareTripleChecker [16 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 60.82ms Time] [2021-11-07 15:56:50,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69925 states. [2021-11-07 15:56:51,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69925 to 54618. [2021-11-07 15:56:51,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54618 states, 54568 states have (on average 1.3735522650637737) internal successors, (74952), 54617 states have internal predecessors, (74952), 0 states have call successors, (0), 0 states 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 15:56:51,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54618 states to 54618 states and 74952 transitions. [2021-11-07 15:56:51,695 INFO L78 Accepts]: Start accepts. Automaton has 54618 states and 74952 transitions. Word has length 59 [2021-11-07 15:56:51,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:56:51,696 INFO L470 AbstractCegarLoop]: Abstraction has 54618 states and 74952 transitions. [2021-11-07 15:56:51,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:56:51,696 INFO L276 IsEmpty]: Start isEmpty. Operand 54618 states and 74952 transitions. [2021-11-07 15:56:51,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 15:56:51,704 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:56:51,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:56:51,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 15:56:51,705 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 47 more)] === [2021-11-07 15:56:51,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:56:51,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1643758202, now seen corresponding path program 1 times [2021-11-07 15:56:51,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:56:51,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920546828] [2021-11-07 15:56:51,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:56:51,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:56:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:56:51,823 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 15:56:51,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:56:51,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920546828] [2021-11-07 15:56:51,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920546828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:56:51,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:56:51,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 15:56:51,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564277750] [2021-11-07 15:56:51,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:56:51,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 15:56:51,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:56:51,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 15:56:51,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 15:56:51,825 INFO L87 Difference]: Start difference. First operand 54618 states and 74952 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:56:54,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:56:54,073 INFO L93 Difference]: Finished difference Result 181162 states and 249456 transitions. [2021-11-07 15:56:54,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 15:56:54,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-07 15:56:54,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:56:54,399 INFO L225 Difference]: With dead ends: 181162 [2021-11-07 15:56:54,399 INFO L226 Difference]: Without dead ends: 126559 [2021-11-07 15:56:54,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.93ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:56:54,535 INFO L933 BasicCegarLoop]: 23245 mSDtfsCounter, 21452 mSDsluCounter, 41157 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 61.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21452 SdHoareTripleChecker+Valid, 64402 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 60.67ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.32ms IncrementalHoareTripleChecker+Time [2021-11-07 15:56:54,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21452 Valid, 64402 Invalid, 67 Unknown, 0 Unchecked, 60.67ms Time], IncrementalHoareTripleChecker [16 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 74.32ms Time] [2021-11-07 15:56:54,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126559 states. [2021-11-07 15:56:56,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126559 to 96037. [2021-11-07 15:56:56,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96037 states, 95987 states have (on average 1.3747069915717753) internal successors, (131954), 96036 states have internal predecessors, (131954), 0 states have call successors, (0), 0 states 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 15:56:56,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96037 states to 96037 states and 131954 transitions. [2021-11-07 15:56:56,987 INFO L78 Accepts]: Start accepts. Automaton has 96037 states and 131954 transitions. Word has length 60 [2021-11-07 15:56:56,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:56:56,987 INFO L470 AbstractCegarLoop]: Abstraction has 96037 states and 131954 transitions. [2021-11-07 15:56:56,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:56:56,987 INFO L276 IsEmpty]: Start isEmpty. Operand 96037 states and 131954 transitions. [2021-11-07 15:56:56,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 15:56:56,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:56:56,996 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:56:56,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 15:56:56,997 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 47 more)] === [2021-11-07 15:56:56,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:56:56,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1941580202, now seen corresponding path program 1 times [2021-11-07 15:56:56,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:56:56,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387707321] [2021-11-07 15:56:56,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:56:56,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 15:56:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 15:56:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 15:56:57,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 15:56:57,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387707321] [2021-11-07 15:56:57,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387707321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 15:56:57,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 15:56:57,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 15:56:57,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593816044] [2021-11-07 15:56:57,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 15:56:57,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 15:56:57,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 15:56:57,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 15:56:57,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 15:56:57,091 INFO L87 Difference]: Start difference. First operand 96037 states and 131954 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:57:01,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 15:57:01,351 INFO L93 Difference]: Finished difference Result 277145 states and 381376 transitions. [2021-11-07 15:57:01,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 15:57:01,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 15:57:01,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 15:57:01,717 INFO L225 Difference]: With dead ends: 277145 [2021-11-07 15:57:01,718 INFO L226 Difference]: Without dead ends: 181123 [2021-11-07 15:57:01,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.64ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 15:57:01,866 INFO L933 BasicCegarLoop]: 36697 mSDtfsCounter, 26729 mSDsluCounter, 91271 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 128.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26729 SdHoareTripleChecker+Valid, 127968 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 80.99ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 153.39ms IncrementalHoareTripleChecker+Time [2021-11-07 15:57:01,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26729 Valid, 127968 Invalid, 151 Unknown, 0 Unchecked, 80.99ms Time], IncrementalHoareTripleChecker [34 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 153.39ms Time] [2021-11-07 15:57:02,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181123 states. [2021-11-07 15:57:04,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181123 to 96077. [2021-11-07 15:57:04,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96077 states, 96027 states have (on average 1.3745509075572495) internal successors, (131994), 96076 states have internal predecessors, (131994), 0 states have call successors, (0), 0 states 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 15:57:04,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96077 states to 96077 states and 131994 transitions. [2021-11-07 15:57:04,863 INFO L78 Accepts]: Start accepts. Automaton has 96077 states and 131994 transitions. Word has length 64 [2021-11-07 15:57:04,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 15:57:04,868 INFO L470 AbstractCegarLoop]: Abstraction has 96077 states and 131994 transitions. [2021-11-07 15:57:04,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 15:57:04,868 INFO L276 IsEmpty]: Start isEmpty. Operand 96077 states and 131994 transitions. [2021-11-07 15:57:04,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 15:57:04,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 15:57:04,903 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 15:57:04,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 15:57:04,904 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 47 more)] === [2021-11-07 15:57:04,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 15:57:04,904 INFO L85 PathProgramCache]: Analyzing trace with hash 851266111, now seen corresponding path program 1 times [2021-11-07 15:57:04,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 15:57:04,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618004567] [2021-11-07 15:57:04,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 15:57:04,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms