./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec9_product34.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec9_product34.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX --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 32bit --witnessprinter.graph.data.programhash f84999f0f81e33d8d10765588f1ef0eb7f6e4b27122985f82c092211345428dc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:43:11,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:43:11,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:43:11,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:43:11,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:43:11,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:43:11,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:43:11,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:43:11,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:43:11,338 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:43:11,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:43:11,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:43:11,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:43:11,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:43:11,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:43:11,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:43:11,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:43:11,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:43:11,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:43:11,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:43:11,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:43:11,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:43:11,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:43:11,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:43:11,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:43:11,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:43:11,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:43:11,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:43:11,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:43:11,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:43:11,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:43:11,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:43:11,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:43:11,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:43:11,380 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:43:11,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:43:11,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:43:11,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:43:11,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:43:11,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:43:11,384 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:43:11,385 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 10:43:11,413 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:43:11,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:43:11,414 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:43:11,415 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:43:11,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:43:11,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:43:11,417 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:43:11,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:43:11,417 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:43:11,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:43:11,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:43:11,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:43:11,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:43:11,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:43:11,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:43:11,419 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:43:11,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:43:11,420 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:43:11,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:43:11,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:43:11,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:43:11,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:43:11,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:43:11,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:43:11,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:43:11,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:43:11,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:43:11,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:43:11,423 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:43:11,423 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:43:11,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:43:11,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:43:11,424 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f84999f0f81e33d8d10765588f1ef0eb7f6e4b27122985f82c092211345428dc [2021-11-09 10:43:11,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:43:11,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:43:11,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:43:11,710 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:43:11,710 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:43:11,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/product-lines/email_spec9_product34.cil.c [2021-11-09 10:43:11,781 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/data/ea55b6e17/0c5afaa39f1047bc81f834c59ae0a254/FLAGb575ba89b [2021-11-09 10:43:12,518 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:43:12,521 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/sv-benchmarks/c/product-lines/email_spec9_product34.cil.c [2021-11-09 10:43:12,558 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/data/ea55b6e17/0c5afaa39f1047bc81f834c59ae0a254/FLAGb575ba89b [2021-11-09 10:43:12,721 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/data/ea55b6e17/0c5afaa39f1047bc81f834c59ae0a254 [2021-11-09 10:43:12,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:43:12,729 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:43:12,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:43:12,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:43:12,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:43:12,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:43:12" (1/1) ... [2021-11-09 10:43:12,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d13190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:12, skipping insertion in model container [2021-11-09 10:43:12,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:43:12" (1/1) ... [2021-11-09 10:43:12,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:43:12,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:43:13,106 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/sv-benchmarks/c/product-lines/email_spec9_product34.cil.c[8301,8314] [2021-11-09 10:43:13,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:43:13,537 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:43:13,564 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/sv-benchmarks/c/product-lines/email_spec9_product34.cil.c[8301,8314] [2021-11-09 10:43:13,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:43:13,707 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:43:13,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:13 WrapperNode [2021-11-09 10:43:13,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:43:13,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:43:13,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:43:13,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:43:13,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:13" (1/1) ... [2021-11-09 10:43:13,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:13" (1/1) ... [2021-11-09 10:43:14,022 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:43:14,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:43:14,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:43:14,023 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:43:14,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:13" (1/1) ... [2021-11-09 10:43:14,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:13" (1/1) ... [2021-11-09 10:43:14,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:13" (1/1) ... [2021-11-09 10:43:14,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:13" (1/1) ... [2021-11-09 10:43:14,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:13" (1/1) ... [2021-11-09 10:43:14,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:13" (1/1) ... [2021-11-09 10:43:14,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:13" (1/1) ... [2021-11-09 10:43:14,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:43:14,238 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:43:14,238 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:43:14,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:43:14,240 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:13" (1/1) ... [2021-11-09 10:43:14,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:43:14,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:14,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:43:14,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:43:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-09 10:43:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:43:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:43:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:43:14,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:43:18,467 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:43:18,468 INFO L299 CfgBuilder]: Removed 861 assume(true) statements. [2021-11-09 10:43:18,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:43:18 BoogieIcfgContainer [2021-11-09 10:43:18,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:43:18,474 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:43:18,474 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:43:18,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:43:18,478 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:43:12" (1/3) ... [2021-11-09 10:43:18,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ca0678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:43:18, skipping insertion in model container [2021-11-09 10:43:18,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:13" (2/3) ... [2021-11-09 10:43:18,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78ca0678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:43:18, skipping insertion in model container [2021-11-09 10:43:18,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:43:18" (3/3) ... [2021-11-09 10:43:18,481 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec9_product34.cil.c [2021-11-09 10:43:18,486 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:43:18,487 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-09 10:43:18,542 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:43:18,548 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 [2021-11-09 10:43:18,549 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-09 10:43:18,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 1266 states, 1259 states have (on average 1.722001588562351) internal successors, (2168), 1265 states have internal predecessors, (2168), 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) [2021-11-09 10:43:18,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-09 10:43:18,631 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:18,632 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] [2021-11-09 10:43:18,632 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:18,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:18,637 INFO L85 PathProgramCache]: Analyzing trace with hash 940613266, now seen corresponding path program 1 times [2021-11-09 10:43:18,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:18,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707387743] [2021-11-09 10:43:18,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:18,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:19,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:19,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:19,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707387743] [2021-11-09 10:43:19,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707387743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:19,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:19,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:43:19,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347812780] [2021-11-09 10:43:19,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:43:19,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:19,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:43:19,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:43:19,154 INFO L87 Difference]: Start difference. First operand has 1266 states, 1259 states have (on average 1.722001588562351) internal successors, (2168), 1265 states have internal predecessors, (2168), 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 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-09 10:43:19,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:19,397 INFO L93 Difference]: Finished difference Result 3763 states and 6446 transitions. [2021-11-09 10:43:19,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:43:19,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 48 [2021-11-09 10:43:19,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:19,435 INFO L225 Difference]: With dead ends: 3763 [2021-11-09 10:43:19,435 INFO L226 Difference]: Without dead ends: 2068 [2021-11-09 10:43:19,448 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 [2021-11-09 10:43:19,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2021-11-09 10:43:19,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 1043. [2021-11-09 10:43:19,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1037 states have (on average 1.7232401157184185) internal successors, (1787), 1042 states have internal predecessors, (1787), 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) [2021-11-09 10:43:19,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1787 transitions. [2021-11-09 10:43:19,570 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1787 transitions. Word has length 48 [2021-11-09 10:43:19,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:19,571 INFO L470 AbstractCegarLoop]: Abstraction has 1043 states and 1787 transitions. [2021-11-09 10:43:19,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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) [2021-11-09 10:43:19,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1787 transitions. [2021-11-09 10:43:19,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-09 10:43:19,574 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:19,574 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] [2021-11-09 10:43:19,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:43:19,575 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:19,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:19,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1057140592, now seen corresponding path program 1 times [2021-11-09 10:43:19,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:19,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261577598] [2021-11-09 10:43:19,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:19,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:19,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:19,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:19,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261577598] [2021-11-09 10:43:19,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261577598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:19,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:19,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:43:19,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756907030] [2021-11-09 10:43:19,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:43:19,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:19,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:43:19,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:43:19,702 INFO L87 Difference]: Start difference. First operand 1043 states and 1787 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2021-11-09 10:43:20,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:20,010 INFO L93 Difference]: Finished difference Result 3078 states and 5277 transitions. [2021-11-09 10:43:20,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 10:43:20,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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 50 [2021-11-09 10:43:20,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:20,027 INFO L225 Difference]: With dead ends: 3078 [2021-11-09 10:43:20,028 INFO L226 Difference]: Without dead ends: 2054 [2021-11-09 10:43:20,030 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:43:20,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2021-11-09 10:43:20,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1043. [2021-11-09 10:43:20,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1037 states have (on average 1.7222757955641272) internal successors, (1786), 1042 states have internal predecessors, (1786), 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) [2021-11-09 10:43:20,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1786 transitions. [2021-11-09 10:43:20,096 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1786 transitions. Word has length 50 [2021-11-09 10:43:20,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:20,096 INFO L470 AbstractCegarLoop]: Abstraction has 1043 states and 1786 transitions. [2021-11-09 10:43:20,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2021-11-09 10:43:20,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1786 transitions. [2021-11-09 10:43:20,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-09 10:43:20,100 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:20,101 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] [2021-11-09 10:43:20,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 10:43:20,101 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:20,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:20,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1353138819, now seen corresponding path program 1 times [2021-11-09 10:43:20,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:20,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649285610] [2021-11-09 10:43:20,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:20,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:20,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:20,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:20,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649285610] [2021-11-09 10:43:20,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649285610] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:20,223 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:20,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:43:20,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756087339] [2021-11-09 10:43:20,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:43:20,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:20,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:43:20,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:43:20,226 INFO L87 Difference]: Start difference. First operand 1043 states and 1786 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-09 10:43:20,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:20,303 INFO L93 Difference]: Finished difference Result 2068 states and 3546 transitions. [2021-11-09 10:43:20,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:43:20,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2021-11-09 10:43:20,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:20,311 INFO L225 Difference]: With dead ends: 2068 [2021-11-09 10:43:20,311 INFO L226 Difference]: Without dead ends: 1048 [2021-11-09 10:43:20,313 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 [2021-11-09 10:43:20,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-11-09 10:43:20,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1043. [2021-11-09 10:43:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1037 states have (on average 1.7193828351012537) internal successors, (1783), 1042 states have internal predecessors, (1783), 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) [2021-11-09 10:43:20,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1783 transitions. [2021-11-09 10:43:20,360 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1783 transitions. Word has length 51 [2021-11-09 10:43:20,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:20,361 INFO L470 AbstractCegarLoop]: Abstraction has 1043 states and 1783 transitions. [2021-11-09 10:43:20,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2021-11-09 10:43:20,361 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1783 transitions. [2021-11-09 10:43:20,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-09 10:43:20,367 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:20,367 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] [2021-11-09 10:43:20,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 10:43:20,368 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:20,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:20,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1010024424, now seen corresponding path program 1 times [2021-11-09 10:43:20,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:20,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411450174] [2021-11-09 10:43:20,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:20,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:20,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:20,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:20,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411450174] [2021-11-09 10:43:20,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411450174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:20,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:20,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:43:20,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335398358] [2021-11-09 10:43:20,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:43:20,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:20,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:43:20,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:43:20,513 INFO L87 Difference]: Start difference. First operand 1043 states and 1783 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2021-11-09 10:43:20,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:20,798 INFO L93 Difference]: Finished difference Result 3068 states and 5257 transitions. [2021-11-09 10:43:20,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:43:20,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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 53 [2021-11-09 10:43:20,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:20,812 INFO L225 Difference]: With dead ends: 3068 [2021-11-09 10:43:20,812 INFO L226 Difference]: Without dead ends: 2052 [2021-11-09 10:43:20,815 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:43:20,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2021-11-09 10:43:20,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 1043. [2021-11-09 10:43:20,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1037 states have (on average 1.7184185149469624) internal successors, (1782), 1042 states have internal predecessors, (1782), 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) [2021-11-09 10:43:20,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1782 transitions. [2021-11-09 10:43:20,887 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1782 transitions. Word has length 53 [2021-11-09 10:43:20,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:20,887 INFO L470 AbstractCegarLoop]: Abstraction has 1043 states and 1782 transitions. [2021-11-09 10:43:20,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2021-11-09 10:43:20,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1782 transitions. [2021-11-09 10:43:20,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-09 10:43:20,889 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:20,890 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] [2021-11-09 10:43:20,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 10:43:20,890 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:20,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:20,891 INFO L85 PathProgramCache]: Analyzing trace with hash 319922683, now seen corresponding path program 1 times [2021-11-09 10:43:20,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:20,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243369609] [2021-11-09 10:43:20,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:20,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:20,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:20,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243369609] [2021-11-09 10:43:20,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243369609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:20,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:20,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:43:20,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556506162] [2021-11-09 10:43:20,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:43:20,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:20,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:43:20,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:43:20,982 INFO L87 Difference]: Start difference. First operand 1043 states and 1782 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2021-11-09 10:43:21,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:21,245 INFO L93 Difference]: Finished difference Result 3073 states and 5261 transitions. [2021-11-09 10:43:21,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:43:21,246 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 54 [2021-11-09 10:43:21,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:21,260 INFO L225 Difference]: With dead ends: 3073 [2021-11-09 10:43:21,260 INFO L226 Difference]: Without dead ends: 2057 [2021-11-09 10:43:21,263 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:43:21,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2021-11-09 10:43:21,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1043. [2021-11-09 10:43:21,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1043 states, 1037 states have (on average 1.7174541947926711) internal successors, (1781), 1042 states have internal predecessors, (1781), 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) [2021-11-09 10:43:21,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1043 states to 1043 states and 1781 transitions. [2021-11-09 10:43:21,338 INFO L78 Accepts]: Start accepts. Automaton has 1043 states and 1781 transitions. Word has length 54 [2021-11-09 10:43:21,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:21,339 INFO L470 AbstractCegarLoop]: Abstraction has 1043 states and 1781 transitions. [2021-11-09 10:43:21,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2021-11-09 10:43:21,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1043 states and 1781 transitions. [2021-11-09 10:43:21,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-09 10:43:21,341 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:21,341 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] [2021-11-09 10:43:21,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-09 10:43:21,342 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:21,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:21,342 INFO L85 PathProgramCache]: Analyzing trace with hash -568897261, now seen corresponding path program 1 times [2021-11-09 10:43:21,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:21,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915728708] [2021-11-09 10:43:21,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:21,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:21,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:21,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:21,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915728708] [2021-11-09 10:43:21,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915728708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:21,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:21,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:43:21,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109788100] [2021-11-09 10:43:21,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:43:21,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:21,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:43:21,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:43:21,458 INFO L87 Difference]: Start difference. First operand 1043 states and 1781 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-09 10:43:21,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:21,529 INFO L93 Difference]: Finished difference Result 1805 states and 3056 transitions. [2021-11-09 10:43:21,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:43:21,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2021-11-09 10:43:21,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:21,561 INFO L225 Difference]: With dead ends: 1805 [2021-11-09 10:43:21,562 INFO L226 Difference]: Without dead ends: 1046 [2021-11-09 10:43:21,564 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 [2021-11-09 10:43:21,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2021-11-09 10:43:21,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 1045. [2021-11-09 10:43:21,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 1039 states have (on average 1.716073147256978) internal successors, (1783), 1044 states have internal predecessors, (1783), 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) [2021-11-09 10:43:21,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1783 transitions. [2021-11-09 10:43:21,625 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1783 transitions. Word has length 55 [2021-11-09 10:43:21,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:21,626 INFO L470 AbstractCegarLoop]: Abstraction has 1045 states and 1783 transitions. [2021-11-09 10:43:21,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2021-11-09 10:43:21,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1783 transitions. [2021-11-09 10:43:21,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-09 10:43:21,628 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:21,628 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] [2021-11-09 10:43:21,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-09 10:43:21,629 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:21,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:21,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1398029295, now seen corresponding path program 1 times [2021-11-09 10:43:21,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:21,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802482411] [2021-11-09 10:43:21,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:21,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:21,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:21,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:21,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802482411] [2021-11-09 10:43:21,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802482411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:21,723 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:21,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:43:21,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646511285] [2021-11-09 10:43:21,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:43:21,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:21,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:43:21,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:43:21,725 INFO L87 Difference]: Start difference. First operand 1045 states and 1783 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2021-11-09 10:43:21,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:21,851 INFO L93 Difference]: Finished difference Result 3021 states and 5173 transitions. [2021-11-09 10:43:21,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:43:21,852 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2021-11-09 10:43:21,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:21,865 INFO L225 Difference]: With dead ends: 3021 [2021-11-09 10:43:21,865 INFO L226 Difference]: Without dead ends: 2007 [2021-11-09 10:43:21,868 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 [2021-11-09 10:43:21,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2021-11-09 10:43:21,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1248. [2021-11-09 10:43:21,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1242 states have (on average 1.7375201288244766) internal successors, (2158), 1247 states have internal predecessors, (2158), 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) [2021-11-09 10:43:21,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 2158 transitions. [2021-11-09 10:43:21,952 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 2158 transitions. Word has length 61 [2021-11-09 10:43:21,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:21,955 INFO L470 AbstractCegarLoop]: Abstraction has 1248 states and 2158 transitions. [2021-11-09 10:43:21,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2021-11-09 10:43:21,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 2158 transitions. [2021-11-09 10:43:21,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-09 10:43:21,957 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:21,958 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] [2021-11-09 10:43:21,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-09 10:43:21,958 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:21,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:21,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1728885840, now seen corresponding path program 1 times [2021-11-09 10:43:21,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:21,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773957077] [2021-11-09 10:43:21,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:21,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:22,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:22,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:22,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773957077] [2021-11-09 10:43:22,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773957077] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:22,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214876604] [2021-11-09 10:43:22,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:22,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:22,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:22,068 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:43:22,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 10:43:22,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:22,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 928 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:43:22,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:43:22,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 10:43:22,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1214876604] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:22,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-09 10:43:22,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-11-09 10:43:22,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891155175] [2021-11-09 10:43:22,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:43:22,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:22,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:43:22,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:43:22,740 INFO L87 Difference]: Start difference. First operand 1248 states and 2158 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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) [2021-11-09 10:43:22,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:22,869 INFO L93 Difference]: Finished difference Result 1909 states and 3259 transitions. [2021-11-09 10:43:22,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:43:22,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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 62 [2021-11-09 10:43:22,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:22,878 INFO L225 Difference]: With dead ends: 1909 [2021-11-09 10:43:22,878 INFO L226 Difference]: Without dead ends: 1250 [2021-11-09 10:43:22,880 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:43:22,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2021-11-09 10:43:22,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1236. [2021-11-09 10:43:22,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1232 states have (on average 1.7370129870129871) internal successors, (2140), 1235 states have internal predecessors, (2140), 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) [2021-11-09 10:43:22,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 2140 transitions. [2021-11-09 10:43:22,961 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 2140 transitions. Word has length 62 [2021-11-09 10:43:22,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:22,962 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 2140 transitions. [2021-11-09 10:43:22,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 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) [2021-11-09 10:43:22,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 2140 transitions. [2021-11-09 10:43:22,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-09 10:43:22,969 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:22,969 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] [2021-11-09 10:43:23,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 10:43:23,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:23,196 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:23,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:23,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1191082930, now seen corresponding path program 1 times [2021-11-09 10:43:23,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:23,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533049789] [2021-11-09 10:43:23,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:23,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:23,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:23,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533049789] [2021-11-09 10:43:23,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533049789] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:23,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394012104] [2021-11-09 10:43:23,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:23,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:23,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:23,318 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 10:43:23,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 10:43:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:23,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 1275 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 10:43:23,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:43:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:24,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394012104] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 10:43:24,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 10:43:24,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-09 10:43:24,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789485073] [2021-11-09 10:43:24,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:43:24,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:24,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:43:24,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:43:24,005 INFO L87 Difference]: Start difference. First operand 1236 states and 2140 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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) [2021-11-09 10:43:24,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:24,167 INFO L93 Difference]: Finished difference Result 2989 states and 5122 transitions. [2021-11-09 10:43:24,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:43:24,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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 106 [2021-11-09 10:43:24,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:24,181 INFO L225 Difference]: With dead ends: 2989 [2021-11-09 10:43:24,181 INFO L226 Difference]: Without dead ends: 2242 [2021-11-09 10:43:24,184 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:43:24,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2021-11-09 10:43:24,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 1493. [2021-11-09 10:43:24,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1493 states, 1489 states have (on average 1.7541974479516453) internal successors, (2612), 1492 states have internal predecessors, (2612), 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) [2021-11-09 10:43:24,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1493 states to 1493 states and 2612 transitions. [2021-11-09 10:43:24,311 INFO L78 Accepts]: Start accepts. Automaton has 1493 states and 2612 transitions. Word has length 106 [2021-11-09 10:43:24,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:24,312 INFO L470 AbstractCegarLoop]: Abstraction has 1493 states and 2612 transitions. [2021-11-09 10:43:24,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 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) [2021-11-09 10:43:24,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1493 states and 2612 transitions. [2021-11-09 10:43:24,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-09 10:43:24,319 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:24,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:24,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 10:43:24,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bd08b207-491f-4742-b635-9855d3eb4e25/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 10:43:24,547 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:24,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:24,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1886292897, now seen corresponding path program 1 times [2021-11-09 10:43:24,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:24,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429168567] [2021-11-09 10:43:24,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:24,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:24,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:24,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:24,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429168567] [2021-11-09 10:43:24,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429168567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:24,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:24,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:43:24,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916001393] [2021-11-09 10:43:24,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:43:24,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:24,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:43:24,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:43:24,627 INFO L87 Difference]: Start difference. First operand 1493 states and 2612 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:24,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:24,784 INFO L93 Difference]: Finished difference Result 4102 states and 7178 transitions. [2021-11-09 10:43:24,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:43:24,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-09 10:43:24,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:24,801 INFO L225 Difference]: With dead ends: 4102 [2021-11-09 10:43:24,801 INFO L226 Difference]: Without dead ends: 2698 [2021-11-09 10:43:24,804 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 [2021-11-09 10:43:24,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2021-11-09 10:43:24,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 1951. [2021-11-09 10:43:24,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1947 states have (on average 1.7740112994350283) internal successors, (3454), 1950 states have internal predecessors, (3454), 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) [2021-11-09 10:43:24,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 3454 transitions. [2021-11-09 10:43:24,938 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 3454 transitions. Word has length 112 [2021-11-09 10:43:24,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:24,938 INFO L470 AbstractCegarLoop]: Abstraction has 1951 states and 3454 transitions. [2021-11-09 10:43:24,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:24,939 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 3454 transitions. [2021-11-09 10:43:24,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-09 10:43:24,945 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:24,945 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:24,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-09 10:43:24,945 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:24,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:24,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1927149201, now seen corresponding path program 2 times [2021-11-09 10:43:24,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:24,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788755122] [2021-11-09 10:43:24,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:24,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:25,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:25,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788755122] [2021-11-09 10:43:25,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788755122] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:25,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:25,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:43:25,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921532650] [2021-11-09 10:43:25,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:43:25,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:25,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:43:25,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:43:25,020 INFO L87 Difference]: Start difference. First operand 1951 states and 3454 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:25,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:25,236 INFO L93 Difference]: Finished difference Result 4359 states and 7648 transitions. [2021-11-09 10:43:25,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:43:25,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-09 10:43:25,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:25,254 INFO L225 Difference]: With dead ends: 4359 [2021-11-09 10:43:25,254 INFO L226 Difference]: Without dead ends: 2698 [2021-11-09 10:43:25,257 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 [2021-11-09 10:43:25,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2698 states. [2021-11-09 10:43:25,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2698 to 1951. [2021-11-09 10:43:25,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1947 states have (on average 1.7729840780688237) internal successors, (3452), 1950 states have internal predecessors, (3452), 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) [2021-11-09 10:43:25,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 3452 transitions. [2021-11-09 10:43:25,405 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 3452 transitions. Word has length 113 [2021-11-09 10:43:25,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:25,406 INFO L470 AbstractCegarLoop]: Abstraction has 1951 states and 3452 transitions. [2021-11-09 10:43:25,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:25,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 3452 transitions. [2021-11-09 10:43:25,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-09 10:43:25,413 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:25,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:25,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-09 10:43:25,413 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:25,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:25,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1236688400, now seen corresponding path program 1 times [2021-11-09 10:43:25,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:25,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470748471] [2021-11-09 10:43:25,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:25,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:25,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:25,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:25,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470748471] [2021-11-09 10:43:25,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470748471] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:25,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:25,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:43:25,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968546248] [2021-11-09 10:43:25,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:43:25,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:25,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:43:25,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:43:25,518 INFO L87 Difference]: Start difference. First operand 1951 states and 3452 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:25,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:25,724 INFO L93 Difference]: Finished difference Result 5448 states and 9653 transitions. [2021-11-09 10:43:25,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:43:25,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-09 10:43:25,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:25,755 INFO L225 Difference]: With dead ends: 5448 [2021-11-09 10:43:25,763 INFO L226 Difference]: Without dead ends: 3594 [2021-11-09 10:43:25,767 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 [2021-11-09 10:43:25,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3594 states. [2021-11-09 10:43:25,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3594 to 2847. [2021-11-09 10:43:25,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2847 states, 2843 states have (on average 1.7935279634189236) internal successors, (5099), 2846 states have internal predecessors, (5099), 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) [2021-11-09 10:43:26,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 5099 transitions. [2021-11-09 10:43:26,005 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 5099 transitions. Word has length 113 [2021-11-09 10:43:26,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:26,006 INFO L470 AbstractCegarLoop]: Abstraction has 2847 states and 5099 transitions. [2021-11-09 10:43:26,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:26,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 5099 transitions. [2021-11-09 10:43:26,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-09 10:43:26,014 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:26,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:26,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-09 10:43:26,014 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:26,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:26,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1947926115, now seen corresponding path program 1 times [2021-11-09 10:43:26,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:26,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918989468] [2021-11-09 10:43:26,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:26,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:26,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:26,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:26,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918989468] [2021-11-09 10:43:26,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918989468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:26,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:26,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:43:26,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835466843] [2021-11-09 10:43:26,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:43:26,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:26,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:43:26,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:43:26,094 INFO L87 Difference]: Start difference. First operand 2847 states and 5099 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-11-09 10:43:26,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:26,348 INFO L93 Difference]: Finished difference Result 7872 states and 14113 transitions. [2021-11-09 10:43:26,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:43:26,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 114 [2021-11-09 10:43:26,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:26,363 INFO L225 Difference]: With dead ends: 7872 [2021-11-09 10:43:26,363 INFO L226 Difference]: Without dead ends: 5156 [2021-11-09 10:43:26,370 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 [2021-11-09 10:43:26,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5156 states. [2021-11-09 10:43:26,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5156 to 4409. [2021-11-09 10:43:26,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4405 states have (on average 1.8088535754824064) internal successors, (7968), 4408 states have internal predecessors, (7968), 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) [2021-11-09 10:43:26,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 7968 transitions. [2021-11-09 10:43:26,691 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 7968 transitions. Word has length 114 [2021-11-09 10:43:26,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:26,692 INFO L470 AbstractCegarLoop]: Abstraction has 4409 states and 7968 transitions. [2021-11-09 10:43:26,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2021-11-09 10:43:26,693 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 7968 transitions. [2021-11-09 10:43:26,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-09 10:43:26,705 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:26,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:26,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-09 10:43:26,705 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:26,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:26,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1074590591, now seen corresponding path program 1 times [2021-11-09 10:43:26,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:26,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207269670] [2021-11-09 10:43:26,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:26,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:26,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:26,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:26,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207269670] [2021-11-09 10:43:26,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207269670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:26,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:26,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:43:26,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078492802] [2021-11-09 10:43:26,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:43:26,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:26,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:43:26,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:43:26,783 INFO L87 Difference]: Start difference. First operand 4409 states and 7968 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2021-11-09 10:43:27,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:27,172 INFO L93 Difference]: Finished difference Result 12274 states and 22203 transitions. [2021-11-09 10:43:27,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:43:27,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 115 [2021-11-09 10:43:27,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:27,194 INFO L225 Difference]: With dead ends: 12274 [2021-11-09 10:43:27,195 INFO L226 Difference]: Without dead ends: 8030 [2021-11-09 10:43:27,201 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 [2021-11-09 10:43:27,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8030 states. [2021-11-09 10:43:27,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8030 to 7283. [2021-11-09 10:43:27,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7283 states, 7279 states have (on average 1.819068553372716) internal successors, (13241), 7282 states have internal predecessors, (13241), 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) [2021-11-09 10:43:27,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7283 states to 7283 states and 13241 transitions. [2021-11-09 10:43:27,582 INFO L78 Accepts]: Start accepts. Automaton has 7283 states and 13241 transitions. Word has length 115 [2021-11-09 10:43:27,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:27,582 INFO L470 AbstractCegarLoop]: Abstraction has 7283 states and 13241 transitions. [2021-11-09 10:43:27,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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) [2021-11-09 10:43:27,583 INFO L276 IsEmpty]: Start isEmpty. Operand 7283 states and 13241 transitions. [2021-11-09 10:43:27,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-09 10:43:27,603 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:27,604 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:27,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-09 10:43:27,604 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:27,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:27,605 INFO L85 PathProgramCache]: Analyzing trace with hash -143811611, now seen corresponding path program 1 times [2021-11-09 10:43:27,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:27,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433594189] [2021-11-09 10:43:27,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:27,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-09 10:43:27,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:27,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433594189] [2021-11-09 10:43:27,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433594189] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:27,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:27,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:43:27,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062789147] [2021-11-09 10:43:27,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:43:27,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:27,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:43:27,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:43:27,775 INFO L87 Difference]: Start difference. First operand 7283 states and 13241 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2021-11-09 10:43:28,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:28,795 INFO L93 Difference]: Finished difference Result 20982 states and 38176 transitions. [2021-11-09 10:43:28,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 10:43:28,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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 116 [2021-11-09 10:43:28,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:28,837 INFO L225 Difference]: With dead ends: 20982 [2021-11-09 10:43:28,838 INFO L226 Difference]: Without dead ends: 13989 [2021-11-09 10:43:28,853 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 10:43:28,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13989 states. [2021-11-09 10:43:29,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13989 to 7283. [2021-11-09 10:43:29,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7283 states, 7279 states have (on average 1.812199477950268) internal successors, (13191), 7282 states have internal predecessors, (13191), 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) [2021-11-09 10:43:29,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7283 states to 7283 states and 13191 transitions. [2021-11-09 10:43:29,353 INFO L78 Accepts]: Start accepts. Automaton has 7283 states and 13191 transitions. Word has length 116 [2021-11-09 10:43:29,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:29,354 INFO L470 AbstractCegarLoop]: Abstraction has 7283 states and 13191 transitions. [2021-11-09 10:43:29,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 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) [2021-11-09 10:43:29,354 INFO L276 IsEmpty]: Start isEmpty. Operand 7283 states and 13191 transitions. [2021-11-09 10:43:29,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-09 10:43:29,376 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:29,376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:29,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-09 10:43:29,377 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:29,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:29,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1620858644, now seen corresponding path program 1 times [2021-11-09 10:43:29,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:29,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120598894] [2021-11-09 10:43:29,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:29,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:29,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:29,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:29,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120598894] [2021-11-09 10:43:29,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120598894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:29,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:29,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:43:29,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208619572] [2021-11-09 10:43:29,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:43:29,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:29,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:43:29,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:43:29,454 INFO L87 Difference]: Start difference. First operand 7283 states and 13191 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2021-11-09 10:43:30,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:30,070 INFO L93 Difference]: Finished difference Result 21222 states and 38486 transitions. [2021-11-09 10:43:30,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:43:30,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 116 [2021-11-09 10:43:30,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:30,121 INFO L225 Difference]: With dead ends: 21222 [2021-11-09 10:43:30,121 INFO L226 Difference]: Without dead ends: 14112 [2021-11-09 10:43:30,134 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 [2021-11-09 10:43:30,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14112 states. [2021-11-09 10:43:30,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14112 to 13365. [2021-11-09 10:43:30,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13365 states, 13361 states have (on average 1.8184267644637377) internal successors, (24296), 13364 states have internal predecessors, (24296), 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) [2021-11-09 10:43:30,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13365 states to 13365 states and 24296 transitions. [2021-11-09 10:43:30,938 INFO L78 Accepts]: Start accepts. Automaton has 13365 states and 24296 transitions. Word has length 116 [2021-11-09 10:43:30,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:30,939 INFO L470 AbstractCegarLoop]: Abstraction has 13365 states and 24296 transitions. [2021-11-09 10:43:30,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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) [2021-11-09 10:43:30,939 INFO L276 IsEmpty]: Start isEmpty. Operand 13365 states and 24296 transitions. [2021-11-09 10:43:30,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-09 10:43:30,984 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:30,984 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:30,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-09 10:43:30,984 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:30,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:30,985 INFO L85 PathProgramCache]: Analyzing trace with hash 723699296, now seen corresponding path program 1 times [2021-11-09 10:43:30,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:30,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226451754] [2021-11-09 10:43:30,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:30,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:31,103 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 10:43:31,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:31,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226451754] [2021-11-09 10:43:31,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226451754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:31,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:31,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-09 10:43:31,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532128392] [2021-11-09 10:43:31,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 10:43:31,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:31,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 10:43:31,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-09 10:43:31,108 INFO L87 Difference]: Start difference. First operand 13365 states and 24296 transitions. Second operand has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 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) [2021-11-09 10:43:33,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:33,151 INFO L93 Difference]: Finished difference Result 29194 states and 52708 transitions. [2021-11-09 10:43:33,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 10:43:33,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 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 117 [2021-11-09 10:43:33,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:33,315 INFO L225 Difference]: With dead ends: 29194 [2021-11-09 10:43:33,315 INFO L226 Difference]: Without dead ends: 28465 [2021-11-09 10:43:33,324 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-09 10:43:33,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28465 states. [2021-11-09 10:43:34,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28465 to 26457. [2021-11-09 10:43:34,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26457 states, 26453 states have (on average 1.819604581710959) internal successors, (48134), 26456 states have internal predecessors, (48134), 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) [2021-11-09 10:43:34,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26457 states to 26457 states and 48134 transitions. [2021-11-09 10:43:34,592 INFO L78 Accepts]: Start accepts. Automaton has 26457 states and 48134 transitions. Word has length 117 [2021-11-09 10:43:34,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:34,593 INFO L470 AbstractCegarLoop]: Abstraction has 26457 states and 48134 transitions. [2021-11-09 10:43:34,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.5) internal successors, (111), 6 states have internal predecessors, (111), 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) [2021-11-09 10:43:34,593 INFO L276 IsEmpty]: Start isEmpty. Operand 26457 states and 48134 transitions. [2021-11-09 10:43:34,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-09 10:43:34,662 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:34,662 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:34,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-09 10:43:34,663 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:34,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:34,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1518054317, now seen corresponding path program 1 times [2021-11-09 10:43:34,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:34,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104954095] [2021-11-09 10:43:34,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:34,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:34,739 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 10:43:34,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:34,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104954095] [2021-11-09 10:43:34,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104954095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:34,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:34,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:43:34,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425976737] [2021-11-09 10:43:34,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:43:34,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:34,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:43:34,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:43:34,742 INFO L87 Difference]: Start difference. First operand 26457 states and 48134 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:36,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:36,301 INFO L93 Difference]: Finished difference Result 52018 states and 94739 transitions. [2021-11-09 10:43:36,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:43:36,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-09 10:43:36,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:36,387 INFO L225 Difference]: With dead ends: 52018 [2021-11-09 10:43:36,388 INFO L226 Difference]: Without dead ends: 38663 [2021-11-09 10:43:36,409 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:43:36,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38663 states. [2021-11-09 10:43:37,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38663 to 26172. [2021-11-09 10:43:37,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26172 states, 26168 states have (on average 1.8203531030265974) internal successors, (47635), 26171 states have internal predecessors, (47635), 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) [2021-11-09 10:43:37,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26172 states to 26172 states and 47635 transitions. [2021-11-09 10:43:37,780 INFO L78 Accepts]: Start accepts. Automaton has 26172 states and 47635 transitions. Word has length 118 [2021-11-09 10:43:37,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:37,780 INFO L470 AbstractCegarLoop]: Abstraction has 26172 states and 47635 transitions. [2021-11-09 10:43:37,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:37,781 INFO L276 IsEmpty]: Start isEmpty. Operand 26172 states and 47635 transitions. [2021-11-09 10:43:37,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-09 10:43:37,827 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:37,827 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:37,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-09 10:43:37,828 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:37,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:37,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1715298539, now seen corresponding path program 1 times [2021-11-09 10:43:37,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:37,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228787447] [2021-11-09 10:43:37,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:37,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 10:43:37,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:37,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228787447] [2021-11-09 10:43:37,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228787447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:37,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:37,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 10:43:37,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84626875] [2021-11-09 10:43:37,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:43:37,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:37,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:43:37,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:43:37,953 INFO L87 Difference]: Start difference. First operand 26172 states and 47635 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:39,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:39,729 INFO L93 Difference]: Finished difference Result 28351 states and 51276 transitions. [2021-11-09 10:43:39,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 10:43:39,730 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-09 10:43:39,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:39,770 INFO L225 Difference]: With dead ends: 28351 [2021-11-09 10:43:39,771 INFO L226 Difference]: Without dead ends: 27138 [2021-11-09 10:43:39,778 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:43:39,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27138 states. [2021-11-09 10:43:40,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27138 to 26166. [2021-11-09 10:43:40,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26166 states, 26162 states have (on average 1.8202736793823102) internal successors, (47622), 26165 states have internal predecessors, (47622), 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) [2021-11-09 10:43:40,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26166 states to 26166 states and 47622 transitions. [2021-11-09 10:43:40,986 INFO L78 Accepts]: Start accepts. Automaton has 26166 states and 47622 transitions. Word has length 119 [2021-11-09 10:43:40,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:40,987 INFO L470 AbstractCegarLoop]: Abstraction has 26166 states and 47622 transitions. [2021-11-09 10:43:40,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:40,987 INFO L276 IsEmpty]: Start isEmpty. Operand 26166 states and 47622 transitions. [2021-11-09 10:43:41,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-09 10:43:41,032 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:41,033 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:41,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-09 10:43:41,034 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:41,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:41,034 INFO L85 PathProgramCache]: Analyzing trace with hash -380177699, now seen corresponding path program 1 times [2021-11-09 10:43:41,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:41,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348747043] [2021-11-09 10:43:41,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:41,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 10:43:41,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:41,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348747043] [2021-11-09 10:43:41,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348747043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:41,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:41,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-09 10:43:41,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491510335] [2021-11-09 10:43:41,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 10:43:41,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:41,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 10:43:41,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-09 10:43:41,236 INFO L87 Difference]: Start difference. First operand 26166 states and 47622 transitions. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 8 states have internal predecessors, (115), 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) [2021-11-09 10:43:46,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:46,938 INFO L93 Difference]: Finished difference Result 59970 states and 107813 transitions. [2021-11-09 10:43:46,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-09 10:43:46,956 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 8 states have internal predecessors, (115), 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 121 [2021-11-09 10:43:46,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:47,070 INFO L225 Difference]: With dead ends: 59970 [2021-11-09 10:43:47,070 INFO L226 Difference]: Without dead ends: 58875 [2021-11-09 10:43:47,086 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2021-11-09 10:43:47,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58875 states. [2021-11-09 10:43:49,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58875 to 53164. [2021-11-09 10:43:49,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53164 states, 53160 states have (on average 1.8178329571106095) internal successors, (96636), 53163 states have internal predecessors, (96636), 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) [2021-11-09 10:43:49,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53164 states to 53164 states and 96636 transitions. [2021-11-09 10:43:49,542 INFO L78 Accepts]: Start accepts. Automaton has 53164 states and 96636 transitions. Word has length 121 [2021-11-09 10:43:49,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:49,543 INFO L470 AbstractCegarLoop]: Abstraction has 53164 states and 96636 transitions. [2021-11-09 10:43:49,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 8 states have internal predecessors, (115), 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) [2021-11-09 10:43:49,544 INFO L276 IsEmpty]: Start isEmpty. Operand 53164 states and 96636 transitions. [2021-11-09 10:43:49,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-09 10:43:49,646 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:49,646 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:49,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-09 10:43:49,647 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:49,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:49,647 INFO L85 PathProgramCache]: Analyzing trace with hash -187767319, now seen corresponding path program 1 times [2021-11-09 10:43:49,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:49,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861585639] [2021-11-09 10:43:49,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:49,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:49,756 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 10:43:49,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:49,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861585639] [2021-11-09 10:43:49,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861585639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:49,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:49,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:43:49,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733546784] [2021-11-09 10:43:49,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 10:43:49,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:49,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 10:43:49,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:43:49,760 INFO L87 Difference]: Start difference. First operand 53164 states and 96636 transitions. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 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) [2021-11-09 10:43:53,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:53,749 INFO L93 Difference]: Finished difference Result 110596 states and 200323 transitions. [2021-11-09 10:43:53,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 10:43:53,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 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 122 [2021-11-09 10:43:53,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:53,963 INFO L225 Difference]: With dead ends: 110596 [2021-11-09 10:43:53,963 INFO L226 Difference]: Without dead ends: 108043 [2021-11-09 10:43:53,989 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-09 10:43:54,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108043 states. [2021-11-09 10:43:58,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108043 to 105439. [2021-11-09 10:43:58,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105439 states, 105435 states have (on average 1.8185801678759426) internal successors, (191742), 105438 states have internal predecessors, (191742), 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) [2021-11-09 10:43:59,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105439 states to 105439 states and 191742 transitions. [2021-11-09 10:43:59,053 INFO L78 Accepts]: Start accepts. Automaton has 105439 states and 191742 transitions. Word has length 122 [2021-11-09 10:43:59,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:59,054 INFO L470 AbstractCegarLoop]: Abstraction has 105439 states and 191742 transitions. [2021-11-09 10:43:59,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 4 states have internal predecessors, (116), 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) [2021-11-09 10:43:59,054 INFO L276 IsEmpty]: Start isEmpty. Operand 105439 states and 191742 transitions. [2021-11-09 10:43:59,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-09 10:43:59,171 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:59,172 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:59,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-09 10:43:59,172 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:43:59,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:59,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1325691726, now seen corresponding path program 1 times [2021-11-09 10:43:59,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:43:59,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661973755] [2021-11-09 10:43:59,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:59,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:43:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:59,255 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 10:43:59,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:43:59,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661973755] [2021-11-09 10:43:59,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661973755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:59,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:59,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 10:43:59,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417243384] [2021-11-09 10:43:59,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 10:43:59,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:43:59,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 10:43:59,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 10:43:59,259 INFO L87 Difference]: Start difference. First operand 105439 states and 191742 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2021-11-09 10:44:03,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:03,852 INFO L93 Difference]: Finished difference Result 113011 states and 204303 transitions. [2021-11-09 10:44:03,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 10:44:03,852 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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 122 [2021-11-09 10:44:03,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:04,098 INFO L225 Difference]: With dead ends: 113011 [2021-11-09 10:44:04,098 INFO L226 Difference]: Without dead ends: 107589 [2021-11-09 10:44:04,141 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 10:44:04,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107589 states. [2021-11-09 10:44:08,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107589 to 104735. [2021-11-09 10:44:08,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104735 states, 104731 states have (on average 1.819480383076644) internal successors, (190556), 104734 states have internal predecessors, (190556), 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) [2021-11-09 10:44:09,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104735 states to 104735 states and 190556 transitions. [2021-11-09 10:44:09,141 INFO L78 Accepts]: Start accepts. Automaton has 104735 states and 190556 transitions. Word has length 122 [2021-11-09 10:44:09,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:09,141 INFO L470 AbstractCegarLoop]: Abstraction has 104735 states and 190556 transitions. [2021-11-09 10:44:09,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2021-11-09 10:44:09,142 INFO L276 IsEmpty]: Start isEmpty. Operand 104735 states and 190556 transitions. [2021-11-09 10:44:09,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-09 10:44:09,273 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:09,274 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:44:09,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-09 10:44:09,274 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-09 10:44:09,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:09,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1120404105, now seen corresponding path program 1 times [2021-11-09 10:44:09,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:09,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896052758] [2021-11-09 10:44:09,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:09,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:09,392 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-09 10:44:09,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:09,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896052758] [2021-11-09 10:44:09,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896052758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:09,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:09,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-09 10:44:09,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985842536] [2021-11-09 10:44:09,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 10:44:09,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:09,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 10:44:09,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-09 10:44:09,396 INFO L87 Difference]: Start difference. First operand 104735 states and 190556 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 7 states have internal predecessors, (117), 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)