./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--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.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 739f3451e6066963c0b7569760000f821b0e10d41a2bb279dc204ee3e2cd1a3e --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 07:38:46,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 07:38:46,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 07:38:46,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 07:38:46,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 07:38:46,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 07:38:46,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 07:38:46,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 07:38:46,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 07:38:46,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 07:38:46,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 07:38:46,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 07:38:46,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 07:38:46,435 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 07:38:46,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 07:38:46,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 07:38:46,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 07:38:46,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 07:38:46,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 07:38:46,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 07:38:46,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 07:38:46,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 07:38:46,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 07:38:46,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 07:38:46,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 07:38:46,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 07:38:46,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 07:38:46,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 07:38:46,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 07:38:46,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 07:38:46,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 07:38:46,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 07:38:46,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 07:38:46,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 07:38:46,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 07:38:46,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 07:38:46,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 07:38:46,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 07:38:46,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 07:38:46,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 07:38:46,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 07:38:46,469 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 07:38:46,490 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 07:38:46,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 07:38:46,490 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 07:38:46,491 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 07:38:46,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 07:38:46,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 07:38:46,492 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 07:38:46,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 07:38:46,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 07:38:46,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 07:38:46,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 07:38:46,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 07:38:46,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 07:38:46,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 07:38:46,494 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 07:38:46,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 07:38:46,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 07:38:46,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 07:38:46,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 07:38:46,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 07:38:46,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 07:38:46,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 07:38:46,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 07:38:46,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 07:38:46,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 07:38:46,496 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 07:38:46,496 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 07:38:46,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 07:38:46,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 07:38:46,496 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 739f3451e6066963c0b7569760000f821b0e10d41a2bb279dc204ee3e2cd1a3e [2021-11-04 07:38:46,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 07:38:46,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 07:38:46,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 07:38:46,737 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 07:38:46,738 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 07:38:46,739 INFO L432 ainManager$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--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2021-11-04 07:38:46,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ff218904/a30d95d832e84aa59f957714076d6586/FLAG2e64fd5e1 [2021-11-04 07:38:47,471 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 07:38:47,471 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--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2021-11-04 07:38:47,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ff218904/a30d95d832e84aa59f957714076d6586/FLAG2e64fd5e1 [2021-11-04 07:38:47,817 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ff218904/a30d95d832e84aa59f957714076d6586 [2021-11-04 07:38:47,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 07:38:47,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 07:38:47,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 07:38:47,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 07:38:47,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 07:38:47,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 07:38:47" (1/1) ... [2021-11-04 07:38:47,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29d2e210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:47, skipping insertion in model container [2021-11-04 07:38:47,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 07:38:47" (1/1) ... [2021-11-04 07:38:47,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 07:38:47,944 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 07:38:49,179 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--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i[284626,284639] [2021-11-04 07:38:49,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 07:38:49,241 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 07:38:49,576 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--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i[284626,284639] [2021-11-04 07:38:49,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 07:38:49,637 INFO L208 MainTranslator]: Completed translation [2021-11-04 07:38:49,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:49 WrapperNode [2021-11-04 07:38:49,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 07:38:49,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 07:38:49,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 07:38:49,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 07:38:49,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:49" (1/1) ... [2021-11-04 07:38:49,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:49" (1/1) ... [2021-11-04 07:38:50,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 07:38:50,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 07:38:50,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 07:38:50,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 07:38:50,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:49" (1/1) ... [2021-11-04 07:38:50,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:49" (1/1) ... [2021-11-04 07:38:50,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:49" (1/1) ... [2021-11-04 07:38:50,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:49" (1/1) ... [2021-11-04 07:38:51,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:49" (1/1) ... [2021-11-04 07:38:51,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:49" (1/1) ... [2021-11-04 07:38:51,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:49" (1/1) ... [2021-11-04 07:38:51,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 07:38:51,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 07:38:51,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 07:38:51,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 07:38:51,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:49" (1/1) ... [2021-11-04 07:38:51,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 07:38:51,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 07:38:51,972 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 07:38:52,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 07:38:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 07:38:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 07:38:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 07:38:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 07:38:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 07:38:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 07:38:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 07:38:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 07:38:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 07:38:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 07:38:52,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 07:39:04,334 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 07:39:04,335 INFO L299 CfgBuilder]: Removed 4694 assume(true) statements. [2021-11-04 07:39:04,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 07:39:04 BoogieIcfgContainer [2021-11-04 07:39:04,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 07:39:04,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 07:39:04,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 07:39:04,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 07:39:04,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 07:38:47" (1/3) ... [2021-11-04 07:39:04,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519d5b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 07:39:04, skipping insertion in model container [2021-11-04 07:39:04,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 07:38:49" (2/3) ... [2021-11-04 07:39:04,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519d5b4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 07:39:04, skipping insertion in model container [2021-11-04 07:39:04,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 07:39:04" (3/3) ... [2021-11-04 07:39:04,349 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--isdn--hardware--mISDN--w6692.ko-entry_point.cil.out.i [2021-11-04 07:39:04,356 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 07:39:04,356 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-04 07:39:04,406 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 07:39:04,412 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 07:39:04,412 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-04 07:39:04,470 INFO L276 IsEmpty]: Start isEmpty. Operand has 4341 states, 4331 states have (on average 1.3876702839990764) internal successors, (6010), 4340 states have internal predecessors, (6010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:39:04,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-04 07:39:04,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:39:04,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:39:04,476 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-04 07:39:04,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:39:04,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1080722524, now seen corresponding path program 1 times [2021-11-04 07:39:04,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:39:04,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619702111] [2021-11-04 07:39:04,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:39:04,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:39:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:39:05,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 07:39:05,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:39:05,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619702111] [2021-11-04 07:39:05,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619702111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:39:05,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:39:05,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:39:05,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185462871] [2021-11-04 07:39:05,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:39:05,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-04 07:39:05,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:39:05,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-04 07:39:05,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 07:39:05,122 INFO L87 Difference]: Start difference. First operand has 4341 states, 4331 states have (on average 1.3876702839990764) internal successors, (6010), 4340 states have internal predecessors, (6010), 0 states have call successors, (0), 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 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:39:07,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:39:55,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:39:55,191 INFO L93 Difference]: Finished difference Result 8678 states and 12015 transitions. [2021-11-04 07:39:55,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-04 07:39:55,193 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-11-04 07:39:55,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:39:55,229 INFO L225 Difference]: With dead ends: 8678 [2021-11-04 07:39:55,229 INFO L226 Difference]: Without dead ends: 4326 [2021-11-04 07:39:55,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-04 07:39:55,244 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5976 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45568.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 5977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.77ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5976 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49302.10ms IncrementalHoareTripleChecker+Time [2021-11-04 07:39:55,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 5977 Unknown, 0 Unchecked, 49.77ms Time], IncrementalHoareTripleChecker [0 Valid, 5976 Invalid, 1 Unknown, 0 Unchecked, 49302.10ms Time] [2021-11-04 07:39:55,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4326 states. [2021-11-04 07:39:55,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4326 to 4326. [2021-11-04 07:39:55,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 4317 states have (on average 1.3808200138985407) internal successors, (5961), 4325 states have internal predecessors, (5961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:39:55,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 5961 transitions. [2021-11-04 07:39:55,418 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 5961 transitions. Word has length 22 [2021-11-04 07:39:55,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:39:55,419 INFO L470 AbstractCegarLoop]: Abstraction has 4326 states and 5961 transitions. [2021-11-04 07:39:55,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.0) internal successors, (22), 2 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:39:55,419 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 5961 transitions. [2021-11-04 07:39:55,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-04 07:39:55,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:39:55,421 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] [2021-11-04 07:39:55,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 07:39:55,422 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-04 07:39:55,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:39:55,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1187020318, now seen corresponding path program 1 times [2021-11-04 07:39:55,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:39:55,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793194866] [2021-11-04 07:39:55,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:39:55,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:39:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:39:55,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 07:39:55,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:39:55,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793194866] [2021-11-04 07:39:55,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793194866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:39:55,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:39:55,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:39:55,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807979089] [2021-11-04 07:39:55,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:39:55,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:39:55,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:39:55,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:39:55,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:39:55,769 INFO L87 Difference]: Start difference. First operand 4326 states and 5961 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:39:57,870 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:41:27,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:41:27,433 INFO L93 Difference]: Finished difference Result 12528 states and 17341 transitions. [2021-11-04 07:41:27,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:41:27,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2021-11-04 07:41:27,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:41:27,468 INFO L225 Difference]: With dead ends: 12528 [2021-11-04 07:41:27,469 INFO L226 Difference]: Without dead ends: 8217 [2021-11-04 07:41:27,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:41:27,481 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5430 mSDsluCounter, 5947 mSDsCounter, 0 mSdLazyCounter, 11918 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85729.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5430 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 113.86ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11918 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 90489.18ms IncrementalHoareTripleChecker+Time [2021-11-04 07:41:27,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5430 Valid, 0 Invalid, 11920 Unknown, 0 Unchecked, 113.86ms Time], IncrementalHoareTripleChecker [1 Valid, 11918 Invalid, 1 Unknown, 0 Unchecked, 90489.18ms Time] [2021-11-04 07:41:27,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8217 states. [2021-11-04 07:41:27,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8217 to 8200. [2021-11-04 07:41:27,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8200 states, 8191 states have (on average 1.3899401782444145) internal successors, (11385), 8199 states have internal predecessors, (11385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:41:27,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8200 states to 8200 states and 11385 transitions. [2021-11-04 07:41:27,914 INFO L78 Accepts]: Start accepts. Automaton has 8200 states and 11385 transitions. Word has length 22 [2021-11-04 07:41:27,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:41:27,915 INFO L470 AbstractCegarLoop]: Abstraction has 8200 states and 11385 transitions. [2021-11-04 07:41:27,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:41:27,916 INFO L276 IsEmpty]: Start isEmpty. Operand 8200 states and 11385 transitions. [2021-11-04 07:41:27,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-04 07:41:27,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:41:27,924 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] [2021-11-04 07:41:27,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 07:41:27,927 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-04 07:41:27,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:41:27,929 INFO L85 PathProgramCache]: Analyzing trace with hash 567191233, now seen corresponding path program 1 times [2021-11-04 07:41:27,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:41:27,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142878773] [2021-11-04 07:41:27,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:41:27,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:41:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:41:28,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 07:41:28,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:41:28,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142878773] [2021-11-04 07:41:28,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142878773] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:41:28,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:41:28,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:41:28,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072426731] [2021-11-04 07:41:28,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:41:28,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:41:28,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:41:28,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:41:28,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:41:28,285 INFO L87 Difference]: Start difference. First operand 8200 states and 11385 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:41:30,364 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:42:53,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:42:53,995 INFO L93 Difference]: Finished difference Result 16386 states and 22756 transitions. [2021-11-04 07:42:53,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 07:42:53,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2021-11-04 07:42:53,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:42:54,023 INFO L225 Difference]: With dead ends: 16386 [2021-11-04 07:42:54,023 INFO L226 Difference]: Without dead ends: 8200 [2021-11-04 07:42:54,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.46ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:42:54,037 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 5956 mSDsCounter, 0 mSdLazyCounter, 11919 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 80957.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 11920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 83.35ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11919 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84975.98ms IncrementalHoareTripleChecker+Time [2021-11-04 07:42:54,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 11920 Unknown, 0 Unchecked, 83.35ms Time], IncrementalHoareTripleChecker [0 Valid, 11919 Invalid, 1 Unknown, 0 Unchecked, 84975.98ms Time] [2021-11-04 07:42:54,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8200 states. [2021-11-04 07:42:54,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8200 to 8200. [2021-11-04 07:42:54,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8200 states, 8191 states have (on average 1.389818093028934) internal successors, (11384), 8199 states have internal predecessors, (11384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:42:54,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8200 states to 8200 states and 11384 transitions. [2021-11-04 07:42:54,242 INFO L78 Accepts]: Start accepts. Automaton has 8200 states and 11384 transitions. Word has length 40 [2021-11-04 07:42:54,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:42:54,243 INFO L470 AbstractCegarLoop]: Abstraction has 8200 states and 11384 transitions. [2021-11-04 07:42:54,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:42:54,244 INFO L276 IsEmpty]: Start isEmpty. Operand 8200 states and 11384 transitions. [2021-11-04 07:42:54,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-04 07:42:54,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:42:54,248 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] [2021-11-04 07:42:54,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 07:42:54,248 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-04 07:42:54,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:42:54,249 INFO L85 PathProgramCache]: Analyzing trace with hash -93621830, now seen corresponding path program 1 times [2021-11-04 07:42:54,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:42:54,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306556565] [2021-11-04 07:42:54,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:42:54,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:42:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:42:54,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 07:42:54,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:42:54,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306556565] [2021-11-04 07:42:54,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306556565] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:42:54,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:42:54,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:42:54,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351996145] [2021-11-04 07:42:54,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:42:54,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 07:42:54,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:42:54,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 07:42:54,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 07:42:54,600 INFO L87 Difference]: Start difference. First operand 8200 states and 11384 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:42:56,666 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 [] [2021-11-04 07:45:14,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:45:14,628 INFO L93 Difference]: Finished difference Result 23706 states and 32782 transitions. [2021-11-04 07:45:14,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 07:45:14,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-04 07:45:14,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:45:14,671 INFO L225 Difference]: With dead ends: 23706 [2021-11-04 07:45:14,671 INFO L226 Difference]: Without dead ends: 15521 [2021-11-04 07:45:14,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 125.22ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 07:45:14,690 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5204 mSDsluCounter, 12073 mSDsCounter, 0 mSdLazyCounter, 19222 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 132205.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5204 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 19238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 197.11ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 19222 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 138409.57ms IncrementalHoareTripleChecker+Time [2021-11-04 07:45:14,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5204 Valid, 0 Invalid, 19238 Unknown, 0 Unchecked, 197.11ms Time], IncrementalHoareTripleChecker [15 Valid, 19222 Invalid, 1 Unknown, 0 Unchecked, 138409.57ms Time] [2021-11-04 07:45:14,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15521 states. [2021-11-04 07:45:14,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15521 to 8710. [2021-11-04 07:45:14,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8710 states, 8701 states have (on average 1.3828295598207103) internal successors, (12032), 8709 states have internal predecessors, (12032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:45:14,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8710 states to 8710 states and 12032 transitions. [2021-11-04 07:45:14,950 INFO L78 Accepts]: Start accepts. Automaton has 8710 states and 12032 transitions. Word has length 41 [2021-11-04 07:45:14,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:45:14,951 INFO L470 AbstractCegarLoop]: Abstraction has 8710 states and 12032 transitions. [2021-11-04 07:45:14,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:45:14,951 INFO L276 IsEmpty]: Start isEmpty. Operand 8710 states and 12032 transitions. [2021-11-04 07:45:14,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-04 07:45:14,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:45:14,953 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] [2021-11-04 07:45:14,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 07:45:14,953 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-04 07:45:14,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:45:14,954 INFO L85 PathProgramCache]: Analyzing trace with hash -893390283, now seen corresponding path program 1 times [2021-11-04 07:45:14,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:45:14,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29246044] [2021-11-04 07:45:14,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:45:14,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:45:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:45:15,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 07:45:15,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:45:15,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29246044] [2021-11-04 07:45:15,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29246044] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:45:15,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:45:15,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:45:15,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097044355] [2021-11-04 07:45:15,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:45:15,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 07:45:15,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:45:15,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 07:45:15,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 07:45:15,374 INFO L87 Difference]: Start difference. First operand 8710 states and 12032 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:45:17,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:47:30,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:47:30,062 INFO L93 Difference]: Finished difference Result 26254 states and 36022 transitions. [2021-11-04 07:47:30,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 07:47:30,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-04 07:47:30,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:47:30,099 INFO L225 Difference]: With dead ends: 26254 [2021-11-04 07:47:30,099 INFO L226 Difference]: Without dead ends: 17559 [2021-11-04 07:47:30,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 117.13ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 07:47:30,116 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5772 mSDsluCounter, 11859 mSDsCounter, 0 mSdLazyCounter, 18433 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 127268.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5772 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 178.98ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 18433 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 133294.85ms IncrementalHoareTripleChecker+Time [2021-11-04 07:47:30,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5772 Valid, 0 Invalid, 18453 Unknown, 0 Unchecked, 178.98ms Time], IncrementalHoareTripleChecker [19 Valid, 18433 Invalid, 1 Unknown, 0 Unchecked, 133294.85ms Time] [2021-11-04 07:47:30,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17559 states. [2021-11-04 07:47:30,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17559 to 15477. [2021-11-04 07:47:30,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15477 states, 15468 states have (on average 1.3808507887251098) internal successors, (21359), 15476 states have internal predecessors, (21359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:47:30,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15477 states to 15477 states and 21359 transitions. [2021-11-04 07:47:30,443 INFO L78 Accepts]: Start accepts. Automaton has 15477 states and 21359 transitions. Word has length 42 [2021-11-04 07:47:30,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:47:30,444 INFO L470 AbstractCegarLoop]: Abstraction has 15477 states and 21359 transitions. [2021-11-04 07:47:30,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:47:30,444 INFO L276 IsEmpty]: Start isEmpty. Operand 15477 states and 21359 transitions. [2021-11-04 07:47:30,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-04 07:47:30,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:47:30,446 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] [2021-11-04 07:47:30,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 07:47:30,447 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-04 07:47:30,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:47:30,448 INFO L85 PathProgramCache]: Analyzing trace with hash 83594758, now seen corresponding path program 1 times [2021-11-04 07:47:30,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:47:30,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117888194] [2021-11-04 07:47:30,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:47:30,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:47:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:47:30,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 07:47:30,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:47:30,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117888194] [2021-11-04 07:47:30,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117888194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:47:30,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:47:30,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:47:30,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248344977] [2021-11-04 07:47:30,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:47:30,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 07:47:30,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:47:30,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 07:47:30,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 07:47:30,759 INFO L87 Difference]: Start difference. First operand 15477 states and 21359 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:47:32,828 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:49:41,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:49:41,003 INFO L93 Difference]: Finished difference Result 46703 states and 63941 transitions. [2021-11-04 07:49:41,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 07:49:41,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2021-11-04 07:49:41,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:49:41,094 INFO L225 Difference]: With dead ends: 46703 [2021-11-04 07:49:41,094 INFO L226 Difference]: Without dead ends: 31241 [2021-11-04 07:49:41,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 115.47ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 07:49:41,132 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5780 mSDsluCounter, 11859 mSDsCounter, 0 mSdLazyCounter, 18430 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 122810.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5780 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 182.71ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 18430 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 128741.14ms IncrementalHoareTripleChecker+Time [2021-11-04 07:49:41,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5780 Valid, 0 Invalid, 18450 Unknown, 0 Unchecked, 182.71ms Time], IncrementalHoareTripleChecker [19 Valid, 18430 Invalid, 1 Unknown, 0 Unchecked, 128741.14ms Time] [2021-11-04 07:49:41,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31241 states. [2021-11-04 07:49:41,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31241 to 27104. [2021-11-04 07:49:41,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27104 states, 27095 states have (on average 1.3780771360029527) internal successors, (37339), 27103 states have internal predecessors, (37339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:49:41,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27104 states to 27104 states and 37339 transitions. [2021-11-04 07:49:41,738 INFO L78 Accepts]: Start accepts. Automaton has 27104 states and 37339 transitions. Word has length 43 [2021-11-04 07:49:41,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:49:41,738 INFO L470 AbstractCegarLoop]: Abstraction has 27104 states and 37339 transitions. [2021-11-04 07:49:41,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:49:41,739 INFO L276 IsEmpty]: Start isEmpty. Operand 27104 states and 37339 transitions. [2021-11-04 07:49:41,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-04 07:49:41,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:49:41,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 07:49:41,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 07:49:41,740 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-04 07:49:41,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:49:41,741 INFO L85 PathProgramCache]: Analyzing trace with hash 307210307, now seen corresponding path program 1 times [2021-11-04 07:49:41,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:49:41,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333951276] [2021-11-04 07:49:41,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:49:41,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:49:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:49:42,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 07:49:42,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:49:42,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333951276] [2021-11-04 07:49:42,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333951276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:49:42,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:49:42,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 07:49:42,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247721188] [2021-11-04 07:49:42,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:49:42,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-04 07:49:42,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:49:42,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-04 07:49:42,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-04 07:49:42,049 INFO L87 Difference]: Start difference. First operand 27104 states and 37339 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:49:44,099 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 07:51:52,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 07:51:52,695 INFO L93 Difference]: Finished difference Result 81872 states and 111737 transitions. [2021-11-04 07:51:52,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-04 07:51:52,696 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-04 07:51:52,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 07:51:52,809 INFO L225 Difference]: With dead ends: 81872 [2021-11-04 07:51:52,810 INFO L226 Difference]: Without dead ends: 54783 [2021-11-04 07:51:52,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 114.21ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-04 07:51:52,866 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 5788 mSDsluCounter, 11859 mSDsCounter, 0 mSdLazyCounter, 18427 mSolverCounterSat, 19 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 122776.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5788 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 172.17ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 18427 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 128687.71ms IncrementalHoareTripleChecker+Time [2021-11-04 07:51:52,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5788 Valid, 0 Invalid, 18447 Unknown, 0 Unchecked, 172.17ms Time], IncrementalHoareTripleChecker [19 Valid, 18427 Invalid, 1 Unknown, 0 Unchecked, 128687.71ms Time] [2021-11-04 07:51:52,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54783 states. [2021-11-04 07:51:53,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54783 to 46543. [2021-11-04 07:51:53,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46543 states, 46534 states have (on average 1.3742424893626166) internal successors, (63949), 46542 states have internal predecessors, (63949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:51:53,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46543 states to 46543 states and 63949 transitions. [2021-11-04 07:51:53,909 INFO L78 Accepts]: Start accepts. Automaton has 46543 states and 63949 transitions. Word has length 44 [2021-11-04 07:51:53,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 07:51:53,910 INFO L470 AbstractCegarLoop]: Abstraction has 46543 states and 63949 transitions. [2021-11-04 07:51:53,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:51:53,910 INFO L276 IsEmpty]: Start isEmpty. Operand 46543 states and 63949 transitions. [2021-11-04 07:51:53,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-04 07:51:53,912 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 07:51:53,912 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] [2021-11-04 07:51:53,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 07:51:53,913 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2021-11-04 07:51:53,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 07:51:53,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1998294810, now seen corresponding path program 1 times [2021-11-04 07:51:53,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 07:51:53,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754444763] [2021-11-04 07:51:53,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 07:51:53,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 07:51:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 07:51:54,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-04 07:51:54,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 07:51:54,372 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754444763] [2021-11-04 07:51:54,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754444763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 07:51:54,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 07:51:54,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 07:51:54,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63528937] [2021-11-04 07:51:54,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 07:51:54,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 07:51:54,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 07:51:54,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 07:51:54,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 07:51:54,374 INFO L87 Difference]: Start difference. First operand 46543 states and 63949 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 2 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 07:51:56,479 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15