./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.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 4b03525ec5447375a01688a728ac5f10add5f84664db60bd75967c00682bdc6d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 15:35:41,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 15:35:41,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 15:35:41,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 15:35:41,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 15:35:41,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 15:35:41,457 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 15:35:41,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 15:35:41,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 15:35:41,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 15:35:41,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 15:35:41,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 15:35:41,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 15:35:41,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 15:35:41,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 15:35:41,472 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 15:35:41,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 15:35:41,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 15:35:41,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 15:35:41,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 15:35:41,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 15:35:41,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 15:35:41,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 15:35:41,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 15:35:41,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 15:35:41,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 15:35:41,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 15:35:41,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 15:35:41,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 15:35:41,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 15:35:41,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 15:35:41,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 15:35:41,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 15:35:41,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 15:35:41,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 15:35:41,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 15:35:41,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 15:35:41,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 15:35:41,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 15:35:41,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 15:35:41,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 15:35:41,499 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 15:35:41,527 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 15:35:41,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 15:35:41,528 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 15:35:41,528 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 15:35:41,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 15:35:41,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 15:35:41,529 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 15:35:41,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 15:35:41,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 15:35:41,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 15:35:41,530 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 15:35:41,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 15:35:41,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 15:35:41,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 15:35:41,531 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 15:35:41,531 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 15:35:41,531 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 15:35:41,531 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 15:35:41,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 15:35:41,532 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:35:41,532 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 15:35:41,532 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 15:35:41,532 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 15:35:41,532 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 15:35:41,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 15:35:41,533 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 15:35:41,533 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 15:35:41,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 15:35:41,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 15:35:41,534 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b03525ec5447375a01688a728ac5f10add5f84664db60bd75967c00682bdc6d [2021-11-06 15:35:41,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 15:35:41,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 15:35:41,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 15:35:41,724 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 15:35:41,725 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 15:35:41,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:35:41,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bd2ded2d/abb73ea498c34236a0861fbce515b575/FLAG6258c96d1 [2021-11-06 15:35:42,372 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 15:35:42,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:35:42,406 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bd2ded2d/abb73ea498c34236a0861fbce515b575/FLAG6258c96d1 [2021-11-06 15:35:42,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bd2ded2d/abb73ea498c34236a0861fbce515b575 [2021-11-06 15:35:42,833 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 15:35:42,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 15:35:42,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 15:35:42,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 15:35:42,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 15:35:42,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:35:42" (1/1) ... [2021-11-06 15:35:42,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37cf1394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:35:42, skipping insertion in model container [2021-11-06 15:35:42,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 03:35:42" (1/1) ... [2021-11-06 15:35:42,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 15:35:42,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 15:35:43,985 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-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i[212825,212838] [2021-11-06 15:35:44,038 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:35:44,064 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 15:35:44,271 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-validator-v0.8/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i[212825,212838] [2021-11-06 15:35:44,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 15:35:44,348 INFO L208 MainTranslator]: Completed translation [2021-11-06 15:35:44,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:35:44 WrapperNode [2021-11-06 15:35:44,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 15:35:44,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 15:35:44,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 15:35:44,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 15:35:44,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:35:44" (1/1) ... [2021-11-06 15:35:44,433 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:35:44" (1/1) ... [2021-11-06 15:35:44,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 15:35:44,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 15:35:44,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 15:35:44,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 15:35:44,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:35:44" (1/1) ... [2021-11-06 15:35:44,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:35:44" (1/1) ... [2021-11-06 15:35:44,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:35:44" (1/1) ... [2021-11-06 15:35:44,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:35:44" (1/1) ... [2021-11-06 15:35:44,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:35:44" (1/1) ... [2021-11-06 15:35:44,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:35:44" (1/1) ... [2021-11-06 15:35:44,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:35:44" (1/1) ... [2021-11-06 15:35:44,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 15:35:44,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 15:35:44,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 15:35:44,974 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 15:35:44,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:35:44" (1/1) ... [2021-11-06 15:35:44,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 15:35:44,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:35:45,009 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) [2021-11-06 15:35:45,020 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 [2021-11-06 15:35:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-11-06 15:35:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 15:35:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 15:35:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 15:35:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 15:35:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 15:35:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 15:35:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 15:35:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 15:35:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 15:35:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 15:35:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 15:35:45,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 15:35:45,085 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-06 15:35:45,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 15:35:45,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 15:35:45,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 15:36:19,589 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 15:36:19,590 INFO L299 CfgBuilder]: Removed 1764 assume(true) statements. [2021-11-06 15:36:19,593 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:36:19 BoogieIcfgContainer [2021-11-06 15:36:19,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 15:36:19,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 15:36:19,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 15:36:19,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 15:36:19,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 03:35:42" (1/3) ... [2021-11-06 15:36:19,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c74120f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:36:19, skipping insertion in model container [2021-11-06 15:36:19,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 03:35:44" (2/3) ... [2021-11-06 15:36:19,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c74120f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 03:36:19, skipping insertion in model container [2021-11-06 15:36:19,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 03:36:19" (3/3) ... [2021-11-06 15:36:19,600 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-06 15:36:19,607 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 15:36:19,607 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 71 error locations. [2021-11-06 15:36:19,715 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 15:36:19,719 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 [2021-11-06 15:36:19,719 INFO L340 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2021-11-06 15:36:19,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 2037 states, 1965 states have (on average 1.4600508905852416) internal successors, (2869), 2036 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:19,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 15:36:19,760 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:36:19,761 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:36:19,761 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-06 15:36:19,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:36:19,765 INFO L85 PathProgramCache]: Analyzing trace with hash -107109679, now seen corresponding path program 1 times [2021-11-06 15:36:19,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:36:19,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087715033] [2021-11-06 15:36:19,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:36:19,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:36:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:36:20,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:36:20,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:36:20,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087715033] [2021-11-06 15:36:20,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087715033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:36:20,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:36:20,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:36:20,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391029547] [2021-11-06 15:36:20,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 15:36:20,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:36:20,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 15:36:20,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:36:20,390 INFO L87 Difference]: Start difference. First operand has 2037 states, 1965 states have (on average 1.4600508905852416) internal successors, (2869), 2036 states have internal predecessors, (2869), 0 states have call successors, (0), 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 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:20,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:36:20,486 INFO L93 Difference]: Finished difference Result 4070 states and 5733 transitions. [2021-11-06 15:36:20,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 15:36:20,488 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-06 15:36:20,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:36:20,506 INFO L225 Difference]: With dead ends: 4070 [2021-11-06 15:36:20,507 INFO L226 Difference]: Without dead ends: 2026 [2021-11-06 15:36:20,513 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 15:36:20,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2021-11-06 15:36:20,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 2026. [2021-11-06 15:36:20,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2026 states, 1955 states have (on average 1.3943734015345268) internal successors, (2726), 2025 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:20,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 2726 transitions. [2021-11-06 15:36:20,594 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 2726 transitions. Word has length 74 [2021-11-06 15:36:20,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:36:20,594 INFO L470 AbstractCegarLoop]: Abstraction has 2026 states and 2726 transitions. [2021-11-06 15:36:20,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:20,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 2726 transitions. [2021-11-06 15:36:20,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-06 15:36:20,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:36:20,601 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:36:20,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 15:36:20,601 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-06 15:36:20,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:36:20,603 INFO L85 PathProgramCache]: Analyzing trace with hash -2011007137, now seen corresponding path program 1 times [2021-11-06 15:36:20,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:36:20,604 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815099801] [2021-11-06 15:36:20,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:36:20,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:36:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:36:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:36:20,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:36:20,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815099801] [2021-11-06 15:36:20,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815099801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:36:20,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:36:20,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:36:20,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855838809] [2021-11-06 15:36:20,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:36:20,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:36:20,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:36:20,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:20,937 INFO L87 Difference]: Start difference. First operand 2026 states and 2726 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:21,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:36:21,270 INFO L93 Difference]: Finished difference Result 5420 states and 7303 transitions. [2021-11-06 15:36:21,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:36:21,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-11-06 15:36:21,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:36:21,279 INFO L225 Difference]: With dead ends: 5420 [2021-11-06 15:36:21,280 INFO L226 Difference]: Without dead ends: 3460 [2021-11-06 15:36:21,282 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:21,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2021-11-06 15:36:21,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3324. [2021-11-06 15:36:21,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3324 states, 3253 states have (on average 1.4033200122963418) internal successors, (4565), 3323 states have internal predecessors, (4565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:21,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3324 states to 3324 states and 4565 transitions. [2021-11-06 15:36:21,329 INFO L78 Accepts]: Start accepts. Automaton has 3324 states and 4565 transitions. Word has length 74 [2021-11-06 15:36:21,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:36:21,330 INFO L470 AbstractCegarLoop]: Abstraction has 3324 states and 4565 transitions. [2021-11-06 15:36:21,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:21,331 INFO L276 IsEmpty]: Start isEmpty. Operand 3324 states and 4565 transitions. [2021-11-06 15:36:21,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-06 15:36:21,332 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:36:21,332 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:36:21,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 15:36:21,334 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-06 15:36:21,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:36:21,336 INFO L85 PathProgramCache]: Analyzing trace with hash -349824167, now seen corresponding path program 1 times [2021-11-06 15:36:21,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:36:21,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439233570] [2021-11-06 15:36:21,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:36:21,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:36:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:36:21,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:36:21,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:36:21,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439233570] [2021-11-06 15:36:21,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439233570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:36:21,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:36:21,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:36:21,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138649856] [2021-11-06 15:36:21,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:36:21,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:36:21,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:36:21,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:21,613 INFO L87 Difference]: Start difference. First operand 3324 states and 4565 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:21,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:36:21,921 INFO L93 Difference]: Finished difference Result 8368 states and 11553 transitions. [2021-11-06 15:36:21,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:36:21,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-11-06 15:36:21,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:36:21,937 INFO L225 Difference]: With dead ends: 8368 [2021-11-06 15:36:21,938 INFO L226 Difference]: Without dead ends: 5110 [2021-11-06 15:36:21,943 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:21,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5110 states. [2021-11-06 15:36:22,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5110 to 5006. [2021-11-06 15:36:22,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5006 states, 4935 states have (on average 1.4192502532928064) internal successors, (7004), 5005 states have internal predecessors, (7004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:22,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5006 states to 5006 states and 7004 transitions. [2021-11-06 15:36:22,021 INFO L78 Accepts]: Start accepts. Automaton has 5006 states and 7004 transitions. Word has length 75 [2021-11-06 15:36:22,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:36:22,023 INFO L470 AbstractCegarLoop]: Abstraction has 5006 states and 7004 transitions. [2021-11-06 15:36:22,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:22,023 INFO L276 IsEmpty]: Start isEmpty. Operand 5006 states and 7004 transitions. [2021-11-06 15:36:22,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-06 15:36:22,024 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:36:22,024 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:36:22,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 15:36:22,025 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr68ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-06 15:36:22,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:36:22,026 INFO L85 PathProgramCache]: Analyzing trace with hash -884622035, now seen corresponding path program 1 times [2021-11-06 15:36:22,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:36:22,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001234006] [2021-11-06 15:36:22,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:36:22,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:36:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:36:22,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:36:22,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:36:22,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001234006] [2021-11-06 15:36:22,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001234006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:36:22,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:36:22,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:36:22,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076615263] [2021-11-06 15:36:22,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:36:22,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:36:22,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:36:22,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:22,289 INFO L87 Difference]: Start difference. First operand 5006 states and 7004 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:24,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:36:24,634 INFO L93 Difference]: Finished difference Result 14815 states and 20787 transitions. [2021-11-06 15:36:24,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:36:24,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-06 15:36:24,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:36:24,662 INFO L225 Difference]: With dead ends: 14815 [2021-11-06 15:36:24,662 INFO L226 Difference]: Without dead ends: 9875 [2021-11-06 15:36:24,669 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:24,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9875 states. [2021-11-06 15:36:24,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9875 to 9737. [2021-11-06 15:36:24,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9737 states, 9666 states have (on average 1.4252017380509001) internal successors, (13776), 9736 states have internal predecessors, (13776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:24,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9737 states to 9737 states and 13776 transitions. [2021-11-06 15:36:24,941 INFO L78 Accepts]: Start accepts. Automaton has 9737 states and 13776 transitions. Word has length 78 [2021-11-06 15:36:24,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:36:24,942 INFO L470 AbstractCegarLoop]: Abstraction has 9737 states and 13776 transitions. [2021-11-06 15:36:24,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:24,943 INFO L276 IsEmpty]: Start isEmpty. Operand 9737 states and 13776 transitions. [2021-11-06 15:36:24,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-06 15:36:24,943 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:36:24,943 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:36:24,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 15:36:24,944 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr53ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-06 15:36:24,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:36:24,945 INFO L85 PathProgramCache]: Analyzing trace with hash 166996193, now seen corresponding path program 1 times [2021-11-06 15:36:24,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:36:24,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003384751] [2021-11-06 15:36:24,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:36:24,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:36:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:36:25,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:36:25,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:36:25,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003384751] [2021-11-06 15:36:25,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003384751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:36:25,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:36:25,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:36:25,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847416225] [2021-11-06 15:36:25,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:36:25,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:36:25,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:36:25,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:25,223 INFO L87 Difference]: Start difference. First operand 9737 states and 13776 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:25,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:36:25,603 INFO L93 Difference]: Finished difference Result 26725 states and 37862 transitions. [2021-11-06 15:36:25,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:36:25,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-06 15:36:25,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:36:25,652 INFO L225 Difference]: With dead ends: 26725 [2021-11-06 15:36:25,653 INFO L226 Difference]: Without dead ends: 17054 [2021-11-06 15:36:25,670 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:25,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17054 states. [2021-11-06 15:36:25,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17054 to 16937. [2021-11-06 15:36:25,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16937 states, 16866 states have (on average 1.4283173247954464) internal successors, (24090), 16936 states have internal predecessors, (24090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:25,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16937 states to 16937 states and 24090 transitions. [2021-11-06 15:36:25,988 INFO L78 Accepts]: Start accepts. Automaton has 16937 states and 24090 transitions. Word has length 80 [2021-11-06 15:36:25,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:36:25,989 INFO L470 AbstractCegarLoop]: Abstraction has 16937 states and 24090 transitions. [2021-11-06 15:36:25,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:25,990 INFO L276 IsEmpty]: Start isEmpty. Operand 16937 states and 24090 transitions. [2021-11-06 15:36:25,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-06 15:36:25,994 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:36:25,994 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:36:25,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 15:36:25,994 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-06 15:36:25,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:36:25,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1237557889, now seen corresponding path program 1 times [2021-11-06 15:36:25,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:36:25,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182848056] [2021-11-06 15:36:25,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:36:25,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:36:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:36:26,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:36:26,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:36:26,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182848056] [2021-11-06 15:36:26,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182848056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:36:26,225 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:36:26,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:36:26,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235060087] [2021-11-06 15:36:26,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:36:26,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:36:26,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:36:26,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:26,226 INFO L87 Difference]: Start difference. First operand 16937 states and 24090 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:26,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:36:26,761 INFO L93 Difference]: Finished difference Result 48169 states and 68447 transitions. [2021-11-06 15:36:26,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:36:26,762 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-06 15:36:26,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:36:26,821 INFO L225 Difference]: With dead ends: 48169 [2021-11-06 15:36:26,821 INFO L226 Difference]: Without dead ends: 31298 [2021-11-06 15:36:26,841 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:26,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31298 states. [2021-11-06 15:36:27,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31298 to 31145. [2021-11-06 15:36:27,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31145 states, 31074 states have (on average 1.4264658556992984) internal successors, (44326), 31144 states have internal predecessors, (44326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:27,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31145 states to 31145 states and 44326 transitions. [2021-11-06 15:36:27,353 INFO L78 Accepts]: Start accepts. Automaton has 31145 states and 44326 transitions. Word has length 81 [2021-11-06 15:36:27,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:36:27,353 INFO L470 AbstractCegarLoop]: Abstraction has 31145 states and 44326 transitions. [2021-11-06 15:36:27,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:27,354 INFO L276 IsEmpty]: Start isEmpty. Operand 31145 states and 44326 transitions. [2021-11-06 15:36:27,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-06 15:36:27,354 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:36:27,354 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:36:27,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 15:36:27,355 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-06 15:36:27,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:36:27,355 INFO L85 PathProgramCache]: Analyzing trace with hash 28195692, now seen corresponding path program 1 times [2021-11-06 15:36:27,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:36:27,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189231921] [2021-11-06 15:36:27,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:36:27,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:36:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:36:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:36:27,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:36:27,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189231921] [2021-11-06 15:36:27,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189231921] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:36:27,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:36:27,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:36:27,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242828245] [2021-11-06 15:36:27,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:36:27,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:36:27,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:36:27,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:27,570 INFO L87 Difference]: Start difference. First operand 31145 states and 44326 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:28,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:36:28,566 INFO L93 Difference]: Finished difference Result 89072 states and 126778 transitions. [2021-11-06 15:36:28,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:36:28,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-11-06 15:36:28,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:36:28,718 INFO L225 Difference]: With dead ends: 89072 [2021-11-06 15:36:28,719 INFO L226 Difference]: Without dead ends: 57993 [2021-11-06 15:36:28,770 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:28,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57993 states. [2021-11-06 15:36:29,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57993 to 57849. [2021-11-06 15:36:30,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57849 states, 57778 states have (on average 1.426390667728201) internal successors, (82414), 57848 states have internal predecessors, (82414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:30,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57849 states to 57849 states and 82414 transitions. [2021-11-06 15:36:30,131 INFO L78 Accepts]: Start accepts. Automaton has 57849 states and 82414 transitions. Word has length 82 [2021-11-06 15:36:30,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:36:30,131 INFO L470 AbstractCegarLoop]: Abstraction has 57849 states and 82414 transitions. [2021-11-06 15:36:30,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:30,132 INFO L276 IsEmpty]: Start isEmpty. Operand 57849 states and 82414 transitions. [2021-11-06 15:36:30,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-06 15:36:30,132 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:36:30,132 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:36:30,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 15:36:30,133 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr68ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-06 15:36:30,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:36:30,133 INFO L85 PathProgramCache]: Analyzing trace with hash -930027842, now seen corresponding path program 1 times [2021-11-06 15:36:30,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:36:30,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762608584] [2021-11-06 15:36:30,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:36:30,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:36:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:36:30,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:36:30,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:36:30,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762608584] [2021-11-06 15:36:30,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762608584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:36:30,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:36:30,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:36:30,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156727635] [2021-11-06 15:36:30,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:36:30,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:36:30,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:36:30,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:30,371 INFO L87 Difference]: Start difference. First operand 57849 states and 82414 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:31,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:36:31,171 INFO L93 Difference]: Finished difference Result 57849 states and 82414 transitions. [2021-11-06 15:36:31,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:36:31,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-11-06 15:36:31,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:36:31,496 INFO L225 Difference]: With dead ends: 57849 [2021-11-06 15:36:31,497 INFO L226 Difference]: Without dead ends: 57837 [2021-11-06 15:36:31,513 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:31,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57837 states. [2021-11-06 15:36:32,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57837 to 57837. [2021-11-06 15:36:32,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57837 states, 57772 states have (on average 1.4236481340441736) internal successors, (82247), 57836 states have internal predecessors, (82247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:32,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57837 states to 57837 states and 82247 transitions. [2021-11-06 15:36:32,910 INFO L78 Accepts]: Start accepts. Automaton has 57837 states and 82247 transitions. Word has length 90 [2021-11-06 15:36:32,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:36:32,912 INFO L470 AbstractCegarLoop]: Abstraction has 57837 states and 82247 transitions. [2021-11-06 15:36:32,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:32,912 INFO L276 IsEmpty]: Start isEmpty. Operand 57837 states and 82247 transitions. [2021-11-06 15:36:32,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-06 15:36:32,913 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:36:32,913 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:36:32,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 15:36:32,914 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr69ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-06 15:36:32,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:36:32,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1233920775, now seen corresponding path program 1 times [2021-11-06 15:36:32,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:36:32,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136875323] [2021-11-06 15:36:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:36:32,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:36:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:36:33,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:36:33,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:36:33,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136875323] [2021-11-06 15:36:33,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136875323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:36:33,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:36:33,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:36:33,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786320599] [2021-11-06 15:36:33,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:36:33,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:36:33,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:36:33,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:33,174 INFO L87 Difference]: Start difference. First operand 57837 states and 82247 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:34,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:36:34,997 INFO L93 Difference]: Finished difference Result 126932 states and 180439 transitions. [2021-11-06 15:36:34,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:36:34,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-11-06 15:36:35,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:36:35,163 INFO L225 Difference]: With dead ends: 126932 [2021-11-06 15:36:35,163 INFO L226 Difference]: Without dead ends: 69161 [2021-11-06 15:36:35,239 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:35,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69161 states. [2021-11-06 15:36:36,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69161 to 68471. [2021-11-06 15:36:36,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68471 states, 68416 states have (on average 1.4095679373246024) internal successors, (96437), 68470 states have internal predecessors, (96437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:36,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68471 states to 68471 states and 96437 transitions. [2021-11-06 15:36:36,754 INFO L78 Accepts]: Start accepts. Automaton has 68471 states and 96437 transitions. Word has length 91 [2021-11-06 15:36:36,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:36:36,754 INFO L470 AbstractCegarLoop]: Abstraction has 68471 states and 96437 transitions. [2021-11-06 15:36:36,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:36,754 INFO L276 IsEmpty]: Start isEmpty. Operand 68471 states and 96437 transitions. [2021-11-06 15:36:36,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-06 15:36:36,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:36:36,755 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:36:36,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 15:36:36,755 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr70ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-06 15:36:36,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:36:36,756 INFO L85 PathProgramCache]: Analyzing trace with hash -403148824, now seen corresponding path program 1 times [2021-11-06 15:36:36,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:36:36,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697130276] [2021-11-06 15:36:36,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:36:36,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:36:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:36:37,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:36:37,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:36:37,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697130276] [2021-11-06 15:36:37,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697130276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:36:37,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:36:37,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 15:36:37,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589439211] [2021-11-06 15:36:37,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:36:37,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:36:37,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:36:37,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:37,251 INFO L87 Difference]: Start difference. First operand 68471 states and 96437 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:38,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:36:38,107 INFO L93 Difference]: Finished difference Result 68471 states and 96437 transitions. [2021-11-06 15:36:38,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:36:38,108 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-11-06 15:36:38,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:36:38,222 INFO L225 Difference]: With dead ends: 68471 [2021-11-06 15:36:38,222 INFO L226 Difference]: Without dead ends: 68464 [2021-11-06 15:36:38,248 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:38,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68464 states. [2021-11-06 15:36:39,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68464 to 68464. [2021-11-06 15:36:39,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68464 states, 68410 states have (on average 1.4088729717877504) internal successors, (96381), 68463 states have internal predecessors, (96381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:39,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68464 states to 68464 states and 96381 transitions. [2021-11-06 15:36:39,629 INFO L78 Accepts]: Start accepts. Automaton has 68464 states and 96381 transitions. Word has length 92 [2021-11-06 15:36:39,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:36:39,629 INFO L470 AbstractCegarLoop]: Abstraction has 68464 states and 96381 transitions. [2021-11-06 15:36:39,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:39,630 INFO L276 IsEmpty]: Start isEmpty. Operand 68464 states and 96381 transitions. [2021-11-06 15:36:39,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-06 15:36:39,634 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:36:39,634 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:36:39,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 15:36:39,635 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-06 15:36:39,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:36:39,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1521197964, now seen corresponding path program 1 times [2021-11-06 15:36:39,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:36:39,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114982718] [2021-11-06 15:36:39,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:36:39,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:36:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:36:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:36:39,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:36:39,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114982718] [2021-11-06 15:36:39,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114982718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:36:39,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:36:39,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:36:39,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543330309] [2021-11-06 15:36:39,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:36:39,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:36:39,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:36:39,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:39,897 INFO L87 Difference]: Start difference. First operand 68464 states and 96381 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:43,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:36:43,001 INFO L93 Difference]: Finished difference Result 103023 states and 145002 transitions. [2021-11-06 15:36:43,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:36:43,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2021-11-06 15:36:43,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:36:43,053 INFO L225 Difference]: With dead ends: 103023 [2021-11-06 15:36:43,053 INFO L226 Difference]: Without dead ends: 34609 [2021-11-06 15:36:43,101 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:43,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34609 states. [2021-11-06 15:36:43,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34609 to 34230. [2021-11-06 15:36:43,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34230 states, 34176 states have (on average 1.4110779494382022) internal successors, (48225), 34229 states have internal predecessors, (48225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:43,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34230 states to 34230 states and 48225 transitions. [2021-11-06 15:36:43,697 INFO L78 Accepts]: Start accepts. Automaton has 34230 states and 48225 transitions. Word has length 119 [2021-11-06 15:36:43,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:36:43,697 INFO L470 AbstractCegarLoop]: Abstraction has 34230 states and 48225 transitions. [2021-11-06 15:36:43,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:43,697 INFO L276 IsEmpty]: Start isEmpty. Operand 34230 states and 48225 transitions. [2021-11-06 15:36:43,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-06 15:36:43,704 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:36:43,704 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:36:43,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 15:36:43,706 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-06 15:36:43,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:36:43,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1414696755, now seen corresponding path program 1 times [2021-11-06 15:36:43,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:36:43,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182019207] [2021-11-06 15:36:43,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:36:43,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:36:43,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:36:43,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:36:43,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:36:43,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182019207] [2021-11-06 15:36:43,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182019207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:36:43,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:36:43,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:36:43,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143141074] [2021-11-06 15:36:43,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:36:43,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:36:43,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:36:43,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:43,971 INFO L87 Difference]: Start difference. First operand 34230 states and 48225 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:47,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:36:47,723 INFO L93 Difference]: Finished difference Result 68313 states and 96309 transitions. [2021-11-06 15:36:47,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:36:47,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 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 137 [2021-11-06 15:36:47,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:36:47,788 INFO L225 Difference]: With dead ends: 68313 [2021-11-06 15:36:47,789 INFO L226 Difference]: Without dead ends: 34178 [2021-11-06 15:36:48,053 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:48,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34178 states. [2021-11-06 15:36:48,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34178 to 33587. [2021-11-06 15:36:48,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33587 states, 33562 states have (on average 1.395774983612419) internal successors, (46845), 33586 states have internal predecessors, (46845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:48,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33587 states to 33587 states and 46845 transitions. [2021-11-06 15:36:48,759 INFO L78 Accepts]: Start accepts. Automaton has 33587 states and 46845 transitions. Word has length 137 [2021-11-06 15:36:48,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:36:48,760 INFO L470 AbstractCegarLoop]: Abstraction has 33587 states and 46845 transitions. [2021-11-06 15:36:48,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:48,760 INFO L276 IsEmpty]: Start isEmpty. Operand 33587 states and 46845 transitions. [2021-11-06 15:36:48,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-06 15:36:48,781 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:36:48,781 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:36:48,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 15:36:48,782 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-06 15:36:48,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:36:48,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1109745819, now seen corresponding path program 1 times [2021-11-06 15:36:48,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:36:48,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880254894] [2021-11-06 15:36:48,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:36:48,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:36:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:36:49,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-06 15:36:49,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:36:49,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880254894] [2021-11-06 15:36:49,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880254894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:36:49,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:36:49,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:36:49,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351433607] [2021-11-06 15:36:49,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:36:49,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:36:49,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:36:49,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:49,055 INFO L87 Difference]: Start difference. First operand 33587 states and 46845 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:51,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:36:51,734 INFO L93 Difference]: Finished difference Result 33587 states and 46845 transitions. [2021-11-06 15:36:51,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:36:51,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 143 [2021-11-06 15:36:51,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:36:51,776 INFO L225 Difference]: With dead ends: 33587 [2021-11-06 15:36:51,777 INFO L226 Difference]: Without dead ends: 33575 [2021-11-06 15:36:51,787 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:36:51,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33575 states. [2021-11-06 15:36:52,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33575 to 33575. [2021-11-06 15:36:52,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33575 states, 33556 states have (on average 1.3915544164977947) internal successors, (46695), 33574 states have internal predecessors, (46695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:52,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33575 states to 33575 states and 46695 transitions. [2021-11-06 15:36:52,409 INFO L78 Accepts]: Start accepts. Automaton has 33575 states and 46695 transitions. Word has length 143 [2021-11-06 15:36:52,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:36:52,409 INFO L470 AbstractCegarLoop]: Abstraction has 33575 states and 46695 transitions. [2021-11-06 15:36:52,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:52,410 INFO L276 IsEmpty]: Start isEmpty. Operand 33575 states and 46695 transitions. [2021-11-06 15:36:52,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-06 15:36:52,424 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:36:52,425 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:36:52,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 15:36:52,425 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-06 15:36:52,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:36:52,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1177498094, now seen corresponding path program 1 times [2021-11-06 15:36:52,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:36:52,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139774476] [2021-11-06 15:36:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:36:52,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:36:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:36:52,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:36:52,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:36:52,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139774476] [2021-11-06 15:36:52,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139774476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:36:52,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:36:52,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:36:52,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474828875] [2021-11-06 15:36:52,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:36:52,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:36:52,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:36:52,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:36:52,951 INFO L87 Difference]: Start difference. First operand 33575 states and 46695 transitions. Second operand has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:56,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:36:56,064 INFO L93 Difference]: Finished difference Result 67066 states and 93286 transitions. [2021-11-06 15:36:56,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:36:56,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 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 160 [2021-11-06 15:36:56,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:36:56,124 INFO L225 Difference]: With dead ends: 67066 [2021-11-06 15:36:56,125 INFO L226 Difference]: Without dead ends: 33583 [2021-11-06 15:36:56,168 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 15:36:56,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33583 states. [2021-11-06 15:36:56,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33583 to 33578. [2021-11-06 15:36:56,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33578 states, 33559 states have (on average 1.3914896153043892) internal successors, (46697), 33577 states have internal predecessors, (46697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:56,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33578 states to 33578 states and 46697 transitions. [2021-11-06 15:36:56,872 INFO L78 Accepts]: Start accepts. Automaton has 33578 states and 46697 transitions. Word has length 160 [2021-11-06 15:36:56,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:36:56,873 INFO L470 AbstractCegarLoop]: Abstraction has 33578 states and 46697 transitions. [2021-11-06 15:36:56,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.0) internal successors, (160), 5 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:56,873 INFO L276 IsEmpty]: Start isEmpty. Operand 33578 states and 46697 transitions. [2021-11-06 15:36:56,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-06 15:36:56,889 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:36:56,889 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:36:56,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-06 15:36:56,889 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-06 15:36:56,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:36:56,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1150432492, now seen corresponding path program 1 times [2021-11-06 15:36:56,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:36:56,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814909406] [2021-11-06 15:36:56,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:36:56,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:36:57,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:36:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 15:36:57,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:36:57,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814909406] [2021-11-06 15:36:57,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814909406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:36:57,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:36:57,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:36:57,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672367633] [2021-11-06 15:36:57,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:36:57,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:36:57,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:36:57,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:36:57,602 INFO L87 Difference]: Start difference. First operand 33578 states and 46697 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:36:59,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:36:59,692 INFO L93 Difference]: Finished difference Result 123557 states and 172065 transitions. [2021-11-06 15:36:59,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:36:59,710 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 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 160 [2021-11-06 15:36:59,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:36:59,865 INFO L225 Difference]: With dead ends: 123557 [2021-11-06 15:36:59,866 INFO L226 Difference]: Without dead ends: 90074 [2021-11-06 15:36:59,907 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:36:59,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90074 states. [2021-11-06 15:37:01,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90074 to 33610. [2021-11-06 15:37:01,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33610 states, 33591 states have (on average 1.3906403500937752) internal successors, (46713), 33609 states have internal predecessors, (46713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:37:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33610 states to 33610 states and 46713 transitions. [2021-11-06 15:37:01,133 INFO L78 Accepts]: Start accepts. Automaton has 33610 states and 46713 transitions. Word has length 160 [2021-11-06 15:37:01,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:37:01,133 INFO L470 AbstractCegarLoop]: Abstraction has 33610 states and 46713 transitions. [2021-11-06 15:37:01,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:37:01,133 INFO L276 IsEmpty]: Start isEmpty. Operand 33610 states and 46713 transitions. [2021-11-06 15:37:01,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-06 15:37:01,149 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:37:01,149 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:37:01,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-06 15:37:01,150 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-06 15:37:01,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:37:01,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1407692294, now seen corresponding path program 1 times [2021-11-06 15:37:01,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:37:01,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058368759] [2021-11-06 15:37:01,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:37:01,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:37:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:37:01,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 15:37:01,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:37:01,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058368759] [2021-11-06 15:37:01,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058368759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:37:01,419 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:37:01,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 15:37:01,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035851477] [2021-11-06 15:37:01,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:37:01,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:37:01,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:37:01,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:37:01,420 INFO L87 Difference]: Start difference. First operand 33610 states and 46713 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:37:02,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:37:02,904 INFO L93 Difference]: Finished difference Result 93472 states and 130175 transitions. [2021-11-06 15:37:02,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:37:02,905 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 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 162 [2021-11-06 15:37:02,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:37:03,005 INFO L225 Difference]: With dead ends: 93472 [2021-11-06 15:37:03,005 INFO L226 Difference]: Without dead ends: 59957 [2021-11-06 15:37:03,050 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 15:37:03,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59957 states. [2021-11-06 15:37:03,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59957 to 33642. [2021-11-06 15:37:04,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33642 states, 33623 states have (on average 1.3902388246141035) internal successors, (46744), 33641 states have internal predecessors, (46744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:37:04,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33642 states to 33642 states and 46744 transitions. [2021-11-06 15:37:04,083 INFO L78 Accepts]: Start accepts. Automaton has 33642 states and 46744 transitions. Word has length 162 [2021-11-06 15:37:04,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:37:04,083 INFO L470 AbstractCegarLoop]: Abstraction has 33642 states and 46744 transitions. [2021-11-06 15:37:04,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:37:04,084 INFO L276 IsEmpty]: Start isEmpty. Operand 33642 states and 46744 transitions. [2021-11-06 15:37:04,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-11-06 15:37:04,102 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:37:04,103 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:37:04,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 15:37:04,104 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-06 15:37:04,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:37:04,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1976958466, now seen corresponding path program 1 times [2021-11-06 15:37:04,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:37:04,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137571813] [2021-11-06 15:37:04,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:37:04,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:37:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:37:04,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 15:37:04,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:37:04,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137571813] [2021-11-06 15:37:04,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137571813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:37:04,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:37:04,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 15:37:04,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429045445] [2021-11-06 15:37:04,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 15:37:04,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:37:04,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 15:37:04,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 15:37:04,883 INFO L87 Difference]: Start difference. First operand 33642 states and 46744 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:37:07,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:37:07,254 INFO L93 Difference]: Finished difference Result 120836 states and 168079 transitions. [2021-11-06 15:37:07,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 15:37:07,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 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 166 [2021-11-06 15:37:07,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:37:07,391 INFO L225 Difference]: With dead ends: 120836 [2021-11-06 15:37:07,391 INFO L226 Difference]: Without dead ends: 87289 [2021-11-06 15:37:07,444 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:37:07,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87289 states. [2021-11-06 15:37:08,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87289 to 33651. [2021-11-06 15:37:08,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33651 states, 33633 states have (on average 1.3894092111913894) internal successors, (46730), 33650 states have internal predecessors, (46730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:37:08,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33651 states to 33651 states and 46730 transitions. [2021-11-06 15:37:08,938 INFO L78 Accepts]: Start accepts. Automaton has 33651 states and 46730 transitions. Word has length 166 [2021-11-06 15:37:08,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:37:08,938 INFO L470 AbstractCegarLoop]: Abstraction has 33651 states and 46730 transitions. [2021-11-06 15:37:08,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:37:08,938 INFO L276 IsEmpty]: Start isEmpty. Operand 33651 states and 46730 transitions. [2021-11-06 15:37:08,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-06 15:37:08,975 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:37:08,975 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:37:08,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 15:37:08,975 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-06 15:37:08,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:37:08,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1270170989, now seen corresponding path program 1 times [2021-11-06 15:37:08,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:37:08,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585527545] [2021-11-06 15:37:08,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:37:08,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:37:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:37:09,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 15:37:09,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:37:09,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585527545] [2021-11-06 15:37:09,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585527545] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 15:37:09,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856356898] [2021-11-06 15:37:09,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:37:09,351 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 15:37:09,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 15:37:09,360 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 15:37:09,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 15:37:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:37:10,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 5572 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 15:37:11,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 15:37:11,585 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 15:37:11,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856356898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:37:11,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 15:37:11,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-06 15:37:11,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248012437] [2021-11-06 15:37:11,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 15:37:11,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:37:11,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 15:37:11,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:37:11,586 INFO L87 Difference]: Start difference. First operand 33651 states and 46730 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:37:13,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:37:13,237 INFO L93 Difference]: Finished difference Result 99240 states and 137910 transitions. [2021-11-06 15:37:13,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 15:37:13,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 202 [2021-11-06 15:37:13,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:37:13,340 INFO L225 Difference]: With dead ends: 99240 [2021-11-06 15:37:13,340 INFO L226 Difference]: Without dead ends: 65684 [2021-11-06 15:37:13,391 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:37:13,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65684 states. [2021-11-06 15:37:14,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65684 to 33667. [2021-11-06 15:37:14,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33667 states, 33649 states have (on average 1.3892240482629499) internal successors, (46746), 33666 states have internal predecessors, (46746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:37:14,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33667 states to 33667 states and 46746 transitions. [2021-11-06 15:37:14,794 INFO L78 Accepts]: Start accepts. Automaton has 33667 states and 46746 transitions. Word has length 202 [2021-11-06 15:37:14,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:37:14,794 INFO L470 AbstractCegarLoop]: Abstraction has 33667 states and 46746 transitions. [2021-11-06 15:37:14,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:37:14,795 INFO L276 IsEmpty]: Start isEmpty. Operand 33667 states and 46746 transitions. [2021-11-06 15:37:14,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-06 15:37:14,822 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:37:14,824 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:37:14,850 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-06 15:37:15,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-06 15:37:15,042 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-06 15:37:15,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:37:15,043 INFO L85 PathProgramCache]: Analyzing trace with hash -760697899, now seen corresponding path program 1 times [2021-11-06 15:37:15,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:37:15,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479120326] [2021-11-06 15:37:15,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:37:15,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:37:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:37:15,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 15:37:15,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:37:15,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479120326] [2021-11-06 15:37:15,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479120326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:37:15,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:37:15,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:37:15,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096226645] [2021-11-06 15:37:15,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:37:15,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:37:15,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:37:15,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:37:15,601 INFO L87 Difference]: Start difference. First operand 33667 states and 46746 transitions. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:37:20,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 15:37:20,042 INFO L93 Difference]: Finished difference Result 96042 states and 133363 transitions. [2021-11-06 15:37:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-06 15:37:20,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 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 202 [2021-11-06 15:37:20,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 15:37:20,155 INFO L225 Difference]: With dead ends: 96042 [2021-11-06 15:37:20,155 INFO L226 Difference]: Without dead ends: 62470 [2021-11-06 15:37:20,190 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-06 15:37:20,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62470 states. [2021-11-06 15:37:21,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62470 to 33699. [2021-11-06 15:37:21,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33699 states, 33681 states have (on average 1.3883792048929664) internal successors, (46762), 33698 states have internal predecessors, (46762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:37:21,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33699 states to 33699 states and 46762 transitions. [2021-11-06 15:37:21,646 INFO L78 Accepts]: Start accepts. Automaton has 33699 states and 46762 transitions. Word has length 202 [2021-11-06 15:37:21,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 15:37:21,647 INFO L470 AbstractCegarLoop]: Abstraction has 33699 states and 46762 transitions. [2021-11-06 15:37:21,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 15:37:21,647 INFO L276 IsEmpty]: Start isEmpty. Operand 33699 states and 46762 transitions. [2021-11-06 15:37:21,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-06 15:37:21,715 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 15:37:21,715 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 15:37:21,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 15:37:21,716 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 68 more)] === [2021-11-06 15:37:21,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 15:37:21,718 INFO L85 PathProgramCache]: Analyzing trace with hash -80639529, now seen corresponding path program 1 times [2021-11-06 15:37:21,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 15:37:21,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807560606] [2021-11-06 15:37:21,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 15:37:21,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 15:37:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 15:37:22,305 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-06 15:37:22,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 15:37:22,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807560606] [2021-11-06 15:37:22,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807560606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 15:37:22,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 15:37:22,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 15:37:22,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744458340] [2021-11-06 15:37:22,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 15:37:22,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 15:37:22,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 15:37:22,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 15:37:22,307 INFO L87 Difference]: Start difference. First operand 33699 states and 46762 transitions. Second operand has 5 states, 5 states have (on average 40.0) internal successors, (200), 5 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)