./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec7_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e06a3bc-601e-48c9-a4ff-046b31799327/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e06a3bc-601e-48c9-a4ff-046b31799327/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e06a3bc-601e-48c9-a4ff-046b31799327/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e06a3bc-601e-48c9-a4ff-046b31799327/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec7_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e06a3bc-601e-48c9-a4ff-046b31799327/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e06a3bc-601e-48c9-a4ff-046b31799327/bin/uautomizer-wIGwrQj20G --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 ac03fde86830071a4c6b2e5721972db0abe9813dd0e80632e775695a294f996c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:24:01,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:24:01,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:24:01,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:24:01,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:24:01,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:24:01,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:24:01,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:24:01,411 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:24:01,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:24:01,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:24:01,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:24:01,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:24:01,424 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:24:01,427 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:24:01,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:24:01,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:24:01,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:24:01,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:24:01,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:24:01,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:24:01,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:24:01,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:24:01,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:24:01,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:24:01,472 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:24:01,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:24:01,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:24:01,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:24:01,479 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:24:01,480 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:24:01,481 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:24:01,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:24:01,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:24:01,488 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:24:01,488 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:24:01,490 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:24:01,490 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:24:01,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:24:01,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:24:01,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:24:01,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e06a3bc-601e-48c9-a4ff-046b31799327/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:24:01,540 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:24:01,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:24:01,540 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:24:01,541 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:24:01,552 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:24:01,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:24:01,552 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:24:01,553 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:24:01,553 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:24:01,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:24:01,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:24:01,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:24:01,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:24:01,556 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:24:01,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:24:01,556 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:24:01,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:24:01,557 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:24:01,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:24:01,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:24:01,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:24:01,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:24:01,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:24:01,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:24:01,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:24:01,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:24:01,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:24:01,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:24:01,560 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:24:01,561 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:24:01,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:24:01,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:24:01,562 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_0e06a3bc-601e-48c9-a4ff-046b31799327/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e06a3bc-601e-48c9-a4ff-046b31799327/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac03fde86830071a4c6b2e5721972db0abe9813dd0e80632e775695a294f996c [2021-11-23 12:24:01,885 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:24:01,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:24:01,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:24:01,925 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:24:01,926 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:24:01,927 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e06a3bc-601e-48c9-a4ff-046b31799327/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/product-lines/email_spec7_product27.cil.c [2021-11-23 12:24:02,018 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e06a3bc-601e-48c9-a4ff-046b31799327/bin/uautomizer-wIGwrQj20G/data/fa7f42188/22572b19a9f7432294dad2f57ad2c83b/FLAG3412ccf51 [2021-11-23 12:24:02,724 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:24:02,724 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e06a3bc-601e-48c9-a4ff-046b31799327/sv-benchmarks/c/product-lines/email_spec7_product27.cil.c [2021-11-23 12:24:02,755 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e06a3bc-601e-48c9-a4ff-046b31799327/bin/uautomizer-wIGwrQj20G/data/fa7f42188/22572b19a9f7432294dad2f57ad2c83b/FLAG3412ccf51 [2021-11-23 12:24:02,904 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e06a3bc-601e-48c9-a4ff-046b31799327/bin/uautomizer-wIGwrQj20G/data/fa7f42188/22572b19a9f7432294dad2f57ad2c83b [2021-11-23 12:24:02,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:24:02,910 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:24:02,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:24:02,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:24:02,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:24:02,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:24:02" (1/1) ... [2021-11-23 12:24:02,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538b4bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:02, skipping insertion in model container [2021-11-23 12:24:02,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:24:02" (1/1) ... [2021-11-23 12:24:02,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:24:03,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:24:03,463 WARN L230 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_0e06a3bc-601e-48c9-a4ff-046b31799327/sv-benchmarks/c/product-lines/email_spec7_product27.cil.c[14691,14704] [2021-11-23 12:24:03,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:24:03,698 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:24:03,741 WARN L230 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_0e06a3bc-601e-48c9-a4ff-046b31799327/sv-benchmarks/c/product-lines/email_spec7_product27.cil.c[14691,14704] [2021-11-23 12:24:03,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:24:03,958 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:24:03,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:03 WrapperNode [2021-11-23 12:24:03,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:24:03,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:24:03,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:24:03,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:24:03,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:03" (1/1) ... [2021-11-23 12:24:04,034 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:03" (1/1) ... [2021-11-23 12:24:04,264 INFO L137 Inliner]: procedures = 133, calls = 225, calls flagged for inlining = 134, calls inlined = 342, statements flattened = 5051 [2021-11-23 12:24:04,265 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:24:04,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:24:04,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:24:04,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:24:04,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:03" (1/1) ... [2021-11-23 12:24:04,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:03" (1/1) ... [2021-11-23 12:24:04,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:03" (1/1) ... [2021-11-23 12:24:04,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:03" (1/1) ... [2021-11-23 12:24:04,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:03" (1/1) ... [2021-11-23 12:24:04,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:03" (1/1) ... [2021-11-23 12:24:04,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:03" (1/1) ... [2021-11-23 12:24:04,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:24:04,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:24:04,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:24:04,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:24:04,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:03" (1/1) ... [2021-11-23 12:24:04,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:24:04,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e06a3bc-601e-48c9-a4ff-046b31799327/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:24:04,504 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e06a3bc-601e-48c9-a4ff-046b31799327/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:24:04,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e06a3bc-601e-48c9-a4ff-046b31799327/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:24:04,567 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-11-23 12:24:04,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:24:04,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:24:04,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:24:04,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:24:04,917 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:24:04,919 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:24:07,616 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:24:07,653 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:24:07,655 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 12:24:07,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:24:07 BoogieIcfgContainer [2021-11-23 12:24:07,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:24:07,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:24:07,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:24:07,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:24:07,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:24:02" (1/3) ... [2021-11-23 12:24:07,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d189b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:24:07, skipping insertion in model container [2021-11-23 12:24:07,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:24:03" (2/3) ... [2021-11-23 12:24:07,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d189b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:24:07, skipping insertion in model container [2021-11-23 12:24:07,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:24:07" (3/3) ... [2021-11-23 12:24:07,674 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product27.cil.c [2021-11-23 12:24:07,685 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:24:07,686 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-23 12:24:07,777 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:24:07,786 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 [2021-11-23 12:24:07,786 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-23 12:24:07,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 1037 states, 1030 states have (on average 1.658252427184466) internal successors, (1708), 1036 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:07,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-23 12:24:07,851 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:24:07,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:07,852 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)] === [2021-11-23 12:24:07,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:07,860 INFO L85 PathProgramCache]: Analyzing trace with hash -833158684, now seen corresponding path program 1 times [2021-11-23 12:24:07,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:07,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419502428] [2021-11-23 12:24:07,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:07,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:08,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:08,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:08,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:08,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419502428] [2021-11-23 12:24:08,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419502428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:08,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:08,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:24:08,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239098994] [2021-11-23 12:24:08,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:08,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:24:08,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:08,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:24:08,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:24:08,319 INFO L87 Difference]: Start difference. First operand has 1037 states, 1030 states have (on average 1.658252427184466) internal successors, (1708), 1036 states have internal predecessors, (1708), 0 states have call successors, (0), 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) [2021-11-23 12:24:08,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:24:08,708 INFO L93 Difference]: Finished difference Result 3058 states and 5048 transitions. [2021-11-23 12:24:08,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:24:08,711 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 [2021-11-23 12:24:08,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:24:08,756 INFO L225 Difference]: With dead ends: 3058 [2021-11-23 12:24:08,756 INFO L226 Difference]: Without dead ends: 1683 [2021-11-23 12:24:08,766 INFO L932 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 [2021-11-23 12:24:08,771 INFO L933 BasicCegarLoop]: 3347 mSDtfsCounter, 1669 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 5011 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:24:08,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1669 Valid, 5011 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:24:08,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2021-11-23 12:24:08,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 852. [2021-11-23 12:24:08,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 846 states have (on average 1.6678486997635933) internal successors, (1411), 851 states have internal predecessors, (1411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:08,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1411 transitions. [2021-11-23 12:24:08,919 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1411 transitions. Word has length 48 [2021-11-23 12:24:08,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:24:08,919 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 1411 transitions. [2021-11-23 12:24:08,920 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) [2021-11-23 12:24:08,920 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1411 transitions. [2021-11-23 12:24:08,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-23 12:24:08,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:24:08,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:08,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:24:08,926 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)] === [2021-11-23 12:24:08,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:08,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1348430267, now seen corresponding path program 1 times [2021-11-23 12:24:08,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:08,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181665001] [2021-11-23 12:24:08,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:08,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:09,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:09,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:09,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:09,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181665001] [2021-11-23 12:24:09,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181665001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:09,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:09,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:24:09,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220905112] [2021-11-23 12:24:09,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:09,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:24:09,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:09,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:24:09,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:24:09,156 INFO L87 Difference]: Start difference. First operand 852 states and 1411 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) [2021-11-23 12:24:09,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:24:09,532 INFO L93 Difference]: Finished difference Result 2497 states and 4141 transitions. [2021-11-23 12:24:09,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:24:09,533 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 [2021-11-23 12:24:09,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:24:09,548 INFO L225 Difference]: With dead ends: 2497 [2021-11-23 12:24:09,548 INFO L226 Difference]: Without dead ends: 1668 [2021-11-23 12:24:09,551 INFO L932 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 [2021-11-23 12:24:09,553 INFO L933 BasicCegarLoop]: 2730 mSDtfsCounter, 2776 mSDsluCounter, 4087 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2776 SdHoareTripleChecker+Valid, 6817 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:24:09,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2776 Valid, 6817 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:24:09,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2021-11-23 12:24:09,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 852. [2021-11-23 12:24:09,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 846 states have (on average 1.6666666666666667) internal successors, (1410), 851 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:09,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1410 transitions. [2021-11-23 12:24:09,617 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1410 transitions. Word has length 50 [2021-11-23 12:24:09,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:24:09,618 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 1410 transitions. [2021-11-23 12:24:09,618 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) [2021-11-23 12:24:09,619 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1410 transitions. [2021-11-23 12:24:09,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 12:24:09,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:24:09,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:09,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:24:09,622 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)] === [2021-11-23 12:24:09,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:09,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1577785152, now seen corresponding path program 1 times [2021-11-23 12:24:09,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:09,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854346288] [2021-11-23 12:24:09,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:09,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:09,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:09,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854346288] [2021-11-23 12:24:09,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854346288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:09,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:09,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:24:09,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595884095] [2021-11-23 12:24:09,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:09,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:24:09,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:09,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:24:09,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:24:09,703 INFO L87 Difference]: Start difference. First operand 852 states and 1410 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) [2021-11-23 12:24:09,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:24:09,781 INFO L93 Difference]: Finished difference Result 1683 states and 2791 transitions. [2021-11-23 12:24:09,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:24:09,781 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 [2021-11-23 12:24:09,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:24:09,789 INFO L225 Difference]: With dead ends: 1683 [2021-11-23 12:24:09,789 INFO L226 Difference]: Without dead ends: 859 [2021-11-23 12:24:09,791 INFO L932 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 [2021-11-23 12:24:09,793 INFO L933 BasicCegarLoop]: 1414 mSDtfsCounter, 1383 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 1436 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:24:09,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1383 Valid, 1436 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:24:09,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2021-11-23 12:24:09,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 852. [2021-11-23 12:24:09,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 846 states have (on average 1.6631205673758864) internal successors, (1407), 851 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:09,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1407 transitions. [2021-11-23 12:24:09,845 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1407 transitions. Word has length 51 [2021-11-23 12:24:09,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:24:09,846 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 1407 transitions. [2021-11-23 12:24:09,846 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) [2021-11-23 12:24:09,846 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1407 transitions. [2021-11-23 12:24:09,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-23 12:24:09,848 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:24:09,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:09,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:24:09,849 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)] === [2021-11-23 12:24:09,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:09,850 INFO L85 PathProgramCache]: Analyzing trace with hash -2065280987, now seen corresponding path program 1 times [2021-11-23 12:24:09,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:09,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359554770] [2021-11-23 12:24:09,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:09,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:09,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:09,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:09,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359554770] [2021-11-23 12:24:09,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359554770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:09,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:09,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:24:09,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216891301] [2021-11-23 12:24:09,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:09,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:24:09,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:09,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:24:09,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:24:09,962 INFO L87 Difference]: Start difference. First operand 852 states and 1407 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) [2021-11-23 12:24:10,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:24:10,218 INFO L93 Difference]: Finished difference Result 2484 states and 4118 transitions. [2021-11-23 12:24:10,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:24:10,219 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 [2021-11-23 12:24:10,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:24:10,233 INFO L225 Difference]: With dead ends: 2484 [2021-11-23 12:24:10,233 INFO L226 Difference]: Without dead ends: 1665 [2021-11-23 12:24:10,236 INFO L932 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 [2021-11-23 12:24:10,237 INFO L933 BasicCegarLoop]: 1391 mSDtfsCounter, 6786 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6786 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:24:10,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6786 Valid, 2795 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:24:10,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2021-11-23 12:24:10,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 852. [2021-11-23 12:24:10,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 846 states have (on average 1.6619385342789599) internal successors, (1406), 851 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:10,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1406 transitions. [2021-11-23 12:24:10,313 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1406 transitions. Word has length 53 [2021-11-23 12:24:10,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:24:10,314 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 1406 transitions. [2021-11-23 12:24:10,314 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) [2021-11-23 12:24:10,314 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1406 transitions. [2021-11-23 12:24:10,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 12:24:10,316 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:24:10,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:10,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 12:24:10,317 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)] === [2021-11-23 12:24:10,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:10,318 INFO L85 PathProgramCache]: Analyzing trace with hash -440869034, now seen corresponding path program 1 times [2021-11-23 12:24:10,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:10,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081153816] [2021-11-23 12:24:10,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:10,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:10,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:10,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081153816] [2021-11-23 12:24:10,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081153816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:10,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:10,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:24:10,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391772859] [2021-11-23 12:24:10,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:10,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:24:10,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:10,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:24:10,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:24:10,423 INFO L87 Difference]: Start difference. First operand 852 states and 1406 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) [2021-11-23 12:24:10,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:24:10,728 INFO L93 Difference]: Finished difference Result 2491 states and 4124 transitions. [2021-11-23 12:24:10,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:24:10,729 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 [2021-11-23 12:24:10,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:24:10,743 INFO L225 Difference]: With dead ends: 2491 [2021-11-23 12:24:10,744 INFO L226 Difference]: Without dead ends: 1672 [2021-11-23 12:24:10,746 INFO L932 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 [2021-11-23 12:24:10,748 INFO L933 BasicCegarLoop]: 1390 mSDtfsCounter, 6790 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6790 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:24:10,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6790 Valid, 2798 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:24:10,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2021-11-23 12:24:10,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 852. [2021-11-23 12:24:10,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 846 states have (on average 1.660756501182033) internal successors, (1405), 851 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:10,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1405 transitions. [2021-11-23 12:24:10,827 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1405 transitions. Word has length 54 [2021-11-23 12:24:10,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:24:10,828 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 1405 transitions. [2021-11-23 12:24:10,828 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) [2021-11-23 12:24:10,829 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1405 transitions. [2021-11-23 12:24:10,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 12:24:10,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:24:10,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:10,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 12:24:10,832 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)] === [2021-11-23 12:24:10,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:10,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1397578528, now seen corresponding path program 1 times [2021-11-23 12:24:10,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:10,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728615425] [2021-11-23 12:24:10,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:10,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:10,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:10,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:10,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728615425] [2021-11-23 12:24:10,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728615425] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:10,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:10,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:24:10,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481847149] [2021-11-23 12:24:10,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:10,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:24:10,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:10,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:24:10,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:24:10,905 INFO L87 Difference]: Start difference. First operand 852 states and 1405 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) [2021-11-23 12:24:10,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:24:10,996 INFO L93 Difference]: Finished difference Result 1400 states and 2278 transitions. [2021-11-23 12:24:10,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:24:10,997 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 [2021-11-23 12:24:10,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:24:11,004 INFO L225 Difference]: With dead ends: 1400 [2021-11-23 12:24:11,005 INFO L226 Difference]: Without dead ends: 855 [2021-11-23 12:24:11,007 INFO L932 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 [2021-11-23 12:24:11,010 INFO L933 BasicCegarLoop]: 1403 mSDtfsCounter, 1 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2804 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:24:11,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2804 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:24:11,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2021-11-23 12:24:11,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 854. [2021-11-23 12:24:11,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 848 states have (on average 1.659198113207547) internal successors, (1407), 853 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:11,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1407 transitions. [2021-11-23 12:24:11,117 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1407 transitions. Word has length 55 [2021-11-23 12:24:11,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:24:11,117 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1407 transitions. [2021-11-23 12:24:11,118 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) [2021-11-23 12:24:11,118 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1407 transitions. [2021-11-23 12:24:11,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 12:24:11,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:24:11,120 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:11,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 12:24:11,120 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)] === [2021-11-23 12:24:11,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:11,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1291630043, now seen corresponding path program 1 times [2021-11-23 12:24:11,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:11,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249078578] [2021-11-23 12:24:11,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:11,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:11,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:11,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:11,182 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:11,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249078578] [2021-11-23 12:24:11,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249078578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:11,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:11,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:24:11,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478500770] [2021-11-23 12:24:11,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:11,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:24:11,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:11,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:24:11,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:24:11,186 INFO L87 Difference]: Start difference. First operand 854 states and 1407 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:11,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:24:11,327 INFO L93 Difference]: Finished difference Result 2434 states and 4031 transitions. [2021-11-23 12:24:11,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:24:11,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-23 12:24:11,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:24:11,341 INFO L225 Difference]: With dead ends: 2434 [2021-11-23 12:24:11,341 INFO L226 Difference]: Without dead ends: 1618 [2021-11-23 12:24:11,344 INFO L932 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 [2021-11-23 12:24:11,345 INFO L933 BasicCegarLoop]: 1404 mSDtfsCounter, 1355 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:24:11,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1355 Valid, 2710 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:24:11,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2021-11-23 12:24:11,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1073. [2021-11-23 12:24:11,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1067 states have (on average 1.6879100281162136) internal successors, (1801), 1072 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:11,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1801 transitions. [2021-11-23 12:24:11,444 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1801 transitions. Word has length 64 [2021-11-23 12:24:11,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:24:11,445 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 1801 transitions. [2021-11-23 12:24:11,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:11,446 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1801 transitions. [2021-11-23 12:24:11,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 12:24:11,447 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:24:11,448 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:11,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 12:24:11,448 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)] === [2021-11-23 12:24:11,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:11,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1723012211, now seen corresponding path program 1 times [2021-11-23 12:24:11,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:11,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016934232] [2021-11-23 12:24:11,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:11,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:11,526 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:11,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:11,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016934232] [2021-11-23 12:24:11,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016934232] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:11,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:11,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:24:11,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262435766] [2021-11-23 12:24:11,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:11,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:24:11,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:11,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:24:11,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:24:11,530 INFO L87 Difference]: Start difference. First operand 1073 states and 1801 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:11,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:24:11,864 INFO L93 Difference]: Finished difference Result 3133 states and 5293 transitions. [2021-11-23 12:24:11,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:24:11,864 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-23 12:24:11,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:24:11,881 INFO L225 Difference]: With dead ends: 3133 [2021-11-23 12:24:11,881 INFO L226 Difference]: Without dead ends: 2098 [2021-11-23 12:24:11,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:24:11,885 INFO L933 BasicCegarLoop]: 2729 mSDtfsCounter, 2745 mSDsluCounter, 4093 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2745 SdHoareTripleChecker+Valid, 6822 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:24:11,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2745 Valid, 6822 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:24:11,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2021-11-23 12:24:11,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 1073. [2021-11-23 12:24:11,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 1067 states have (on average 1.6860356138706654) internal successors, (1799), 1072 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:11,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1799 transitions. [2021-11-23 12:24:11,999 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1799 transitions. Word has length 65 [2021-11-23 12:24:12,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:24:12,002 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 1799 transitions. [2021-11-23 12:24:12,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:12,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1799 transitions. [2021-11-23 12:24:12,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 12:24:12,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:24:12,006 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:12,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 12:24:12,007 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:24:12,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:12,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1316118086, now seen corresponding path program 1 times [2021-11-23 12:24:12,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:12,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463878420] [2021-11-23 12:24:12,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:12,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:12,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:12,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:12,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463878420] [2021-11-23 12:24:12,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463878420] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:12,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:12,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:24:12,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692407826] [2021-11-23 12:24:12,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:12,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:24:12,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:12,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:24:12,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:24:12,111 INFO L87 Difference]: Start difference. First operand 1073 states and 1799 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:12,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:24:12,319 INFO L93 Difference]: Finished difference Result 3131 states and 5285 transitions. [2021-11-23 12:24:12,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:24:12,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-23 12:24:12,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:24:12,336 INFO L225 Difference]: With dead ends: 3131 [2021-11-23 12:24:12,336 INFO L226 Difference]: Without dead ends: 2096 [2021-11-23 12:24:12,339 INFO L932 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 [2021-11-23 12:24:12,339 INFO L933 BasicCegarLoop]: 2273 mSDtfsCounter, 1352 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 3665 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:24:12,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1352 Valid, 3665 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:24:12,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2096 states. [2021-11-23 12:24:12,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2096 to 1551. [2021-11-23 12:24:12,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1551 states, 1545 states have (on average 1.7229773462783171) internal successors, (2662), 1550 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:12,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1551 states to 1551 states and 2662 transitions. [2021-11-23 12:24:12,480 INFO L78 Accepts]: Start accepts. Automaton has 1551 states and 2662 transitions. Word has length 66 [2021-11-23 12:24:12,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:24:12,481 INFO L470 AbstractCegarLoop]: Abstraction has 1551 states and 2662 transitions. [2021-11-23 12:24:12,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:12,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1551 states and 2662 transitions. [2021-11-23 12:24:12,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 12:24:12,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:24:12,483 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:12,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 12:24:12,484 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:24:12,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:12,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1110349223, now seen corresponding path program 1 times [2021-11-23 12:24:12,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:12,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797410220] [2021-11-23 12:24:12,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:12,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:12,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:12,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:12,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797410220] [2021-11-23 12:24:12,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797410220] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:24:12,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215618731] [2021-11-23 12:24:12,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:12,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:24:12,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e06a3bc-601e-48c9-a4ff-046b31799327/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:24:12,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e06a3bc-601e-48c9-a4ff-046b31799327/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:24:12,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e06a3bc-601e-48c9-a4ff-046b31799327/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 12:24:12,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:12,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:24:12,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:24:13,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:13,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:24:13,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:13,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215618731] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:24:13,186 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:24:13,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 12:24:13,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310415945] [2021-11-23 12:24:13,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:24:13,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:24:13,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:13,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:24:13,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:24:13,189 INFO L87 Difference]: Start difference. First operand 1551 states and 2662 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:13,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:24:13,731 INFO L93 Difference]: Finished difference Result 5731 states and 9742 transitions. [2021-11-23 12:24:13,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:24:13,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 66 [2021-11-23 12:24:13,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:24:13,775 INFO L225 Difference]: With dead ends: 5731 [2021-11-23 12:24:13,775 INFO L226 Difference]: Without dead ends: 5186 [2021-11-23 12:24:13,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:24:13,780 INFO L933 BasicCegarLoop]: 1402 mSDtfsCounter, 5404 mSDsluCounter, 6912 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5404 SdHoareTripleChecker+Valid, 8314 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:24:13,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5404 Valid, 8314 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:24:13,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states. [2021-11-23 12:24:14,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 3551. [2021-11-23 12:24:14,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3551 states, 3545 states have (on average 1.7644569816643159) internal successors, (6255), 3550 states have internal predecessors, (6255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:14,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3551 states to 3551 states and 6255 transitions. [2021-11-23 12:24:14,136 INFO L78 Accepts]: Start accepts. Automaton has 3551 states and 6255 transitions. Word has length 66 [2021-11-23 12:24:14,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:24:14,138 INFO L470 AbstractCegarLoop]: Abstraction has 3551 states and 6255 transitions. [2021-11-23 12:24:14,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:14,138 INFO L276 IsEmpty]: Start isEmpty. Operand 3551 states and 6255 transitions. [2021-11-23 12:24:14,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 12:24:14,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:24:14,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:14,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e06a3bc-601e-48c9-a4ff-046b31799327/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:24:14,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e06a3bc-601e-48c9-a4ff-046b31799327/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 12:24:14,370 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:24:14,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:14,371 INFO L85 PathProgramCache]: Analyzing trace with hash 186404743, now seen corresponding path program 1 times [2021-11-23 12:24:14,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:14,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541466911] [2021-11-23 12:24:14,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:14,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:14,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:14,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:14,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541466911] [2021-11-23 12:24:14,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541466911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:14,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:14,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:24:14,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566080558] [2021-11-23 12:24:14,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:14,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:24:14,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:14,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:24:14,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:24:14,460 INFO L87 Difference]: Start difference. First operand 3551 states and 6255 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:14,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:24:14,901 INFO L93 Difference]: Finished difference Result 9401 states and 16571 transitions. [2021-11-23 12:24:14,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:24:14,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-11-23 12:24:14,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:24:14,949 INFO L225 Difference]: With dead ends: 9401 [2021-11-23 12:24:14,949 INFO L226 Difference]: Without dead ends: 6050 [2021-11-23 12:24:14,956 INFO L932 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 [2021-11-23 12:24:14,957 INFO L933 BasicCegarLoop]: 1404 mSDtfsCounter, 1350 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:24:14,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1350 Valid, 2795 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:24:14,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6050 states. [2021-11-23 12:24:15,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6050 to 5505. [2021-11-23 12:24:15,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5505 states, 5499 states have (on average 1.7752318603382433) internal successors, (9762), 5504 states have internal predecessors, (9762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:15,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5505 states to 5505 states and 9762 transitions. [2021-11-23 12:24:15,443 INFO L78 Accepts]: Start accepts. Automaton has 5505 states and 9762 transitions. Word has length 69 [2021-11-23 12:24:15,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:24:15,443 INFO L470 AbstractCegarLoop]: Abstraction has 5505 states and 9762 transitions. [2021-11-23 12:24:15,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:15,444 INFO L276 IsEmpty]: Start isEmpty. Operand 5505 states and 9762 transitions. [2021-11-23 12:24:15,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 12:24:15,450 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:24:15,450 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:15,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 12:24:15,450 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:24:15,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:15,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1755994055, now seen corresponding path program 1 times [2021-11-23 12:24:15,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:15,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523142587] [2021-11-23 12:24:15,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:15,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:15,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:15,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:15,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523142587] [2021-11-23 12:24:15,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523142587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:15,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:15,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:24:15,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351994584] [2021-11-23 12:24:15,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:15,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:24:15,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:15,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:24:15,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:24:15,517 INFO L87 Difference]: Start difference. First operand 5505 states and 9762 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:16,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:24:16,172 INFO L93 Difference]: Finished difference Result 13789 states and 24441 transitions. [2021-11-23 12:24:16,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:24:16,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-23 12:24:16,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:24:16,212 INFO L225 Difference]: With dead ends: 13789 [2021-11-23 12:24:16,213 INFO L226 Difference]: Without dead ends: 8851 [2021-11-23 12:24:16,224 INFO L932 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 [2021-11-23 12:24:16,226 INFO L933 BasicCegarLoop]: 1403 mSDtfsCounter, 1348 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:24:16,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1348 Valid, 2746 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:24:16,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8851 states. [2021-11-23 12:24:16,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8851 to 8306. [2021-11-23 12:24:16,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8306 states, 8300 states have (on average 1.7792771084337349) internal successors, (14768), 8305 states have internal predecessors, (14768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:16,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8306 states to 8306 states and 14768 transitions. [2021-11-23 12:24:16,868 INFO L78 Accepts]: Start accepts. Automaton has 8306 states and 14768 transitions. Word has length 70 [2021-11-23 12:24:16,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:24:16,869 INFO L470 AbstractCegarLoop]: Abstraction has 8306 states and 14768 transitions. [2021-11-23 12:24:16,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:16,871 INFO L276 IsEmpty]: Start isEmpty. Operand 8306 states and 14768 transitions. [2021-11-23 12:24:16,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 12:24:16,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:24:16,877 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:16,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 12:24:16,877 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:24:16,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:16,878 INFO L85 PathProgramCache]: Analyzing trace with hash 132503829, now seen corresponding path program 1 times [2021-11-23 12:24:16,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:16,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122469706] [2021-11-23 12:24:16,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:16,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:16,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:16,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:16,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122469706] [2021-11-23 12:24:16,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122469706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:16,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:16,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:24:16,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968142101] [2021-11-23 12:24:16,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:16,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:24:16,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:16,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:24:16,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:24:16,946 INFO L87 Difference]: Start difference. First operand 8306 states and 14768 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:17,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:24:17,767 INFO L93 Difference]: Finished difference Result 20417 states and 36299 transitions. [2021-11-23 12:24:17,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:24:17,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-23 12:24:17,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:24:17,806 INFO L225 Difference]: With dead ends: 20417 [2021-11-23 12:24:17,806 INFO L226 Difference]: Without dead ends: 13267 [2021-11-23 12:24:17,817 INFO L932 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 [2021-11-23 12:24:17,818 INFO L933 BasicCegarLoop]: 1403 mSDtfsCounter, 1346 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:24:17,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1346 Valid, 2746 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:24:17,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13267 states. [2021-11-23 12:24:18,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13267 to 12722. [2021-11-23 12:24:18,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12722 states, 12716 states have (on average 1.780905945265807) internal successors, (22646), 12721 states have internal predecessors, (22646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:18,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12722 states to 12722 states and 22646 transitions. [2021-11-23 12:24:18,913 INFO L78 Accepts]: Start accepts. Automaton has 12722 states and 22646 transitions. Word has length 71 [2021-11-23 12:24:18,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:24:18,914 INFO L470 AbstractCegarLoop]: Abstraction has 12722 states and 22646 transitions. [2021-11-23 12:24:18,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:18,915 INFO L276 IsEmpty]: Start isEmpty. Operand 12722 states and 22646 transitions. [2021-11-23 12:24:18,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-23 12:24:18,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:24:18,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:18,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 12:24:18,928 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:24:18,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:18,929 INFO L85 PathProgramCache]: Analyzing trace with hash -970113367, now seen corresponding path program 1 times [2021-11-23 12:24:18,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:18,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427237349] [2021-11-23 12:24:18,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:18,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:19,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:19,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427237349] [2021-11-23 12:24:19,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427237349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:19,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:19,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:24:19,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572340570] [2021-11-23 12:24:19,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:19,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:24:19,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:19,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:24:19,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:24:19,019 INFO L87 Difference]: Start difference. First operand 12722 states and 22646 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:20,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:24:20,126 INFO L93 Difference]: Finished difference Result 32476 states and 57918 transitions. [2021-11-23 12:24:20,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:24:20,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-11-23 12:24:20,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:24:20,201 INFO L225 Difference]: With dead ends: 32476 [2021-11-23 12:24:20,201 INFO L226 Difference]: Without dead ends: 21458 [2021-11-23 12:24:20,225 INFO L932 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 [2021-11-23 12:24:20,226 INFO L933 BasicCegarLoop]: 1403 mSDtfsCounter, 1344 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:24:20,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1344 Valid, 2794 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:24:20,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21458 states. [2021-11-23 12:24:21,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21458 to 20913. [2021-11-23 12:24:21,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20913 states, 20907 states have (on average 1.7840436217534796) internal successors, (37299), 20912 states have internal predecessors, (37299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:21,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20913 states to 20913 states and 37299 transitions. [2021-11-23 12:24:21,597 INFO L78 Accepts]: Start accepts. Automaton has 20913 states and 37299 transitions. Word has length 72 [2021-11-23 12:24:21,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:24:21,597 INFO L470 AbstractCegarLoop]: Abstraction has 20913 states and 37299 transitions. [2021-11-23 12:24:21,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:21,598 INFO L276 IsEmpty]: Start isEmpty. Operand 20913 states and 37299 transitions. [2021-11-23 12:24:21,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-23 12:24:21,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:24:21,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:21,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 12:24:21,608 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:24:21,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:21,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2022837595, now seen corresponding path program 1 times [2021-11-23 12:24:21,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:21,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027919829] [2021-11-23 12:24:21,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:21,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:21,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:21,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:21,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027919829] [2021-11-23 12:24:21,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027919829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:21,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:21,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:24:21,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141494064] [2021-11-23 12:24:21,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:21,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:24:21,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:21,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:24:21,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:24:21,839 INFO L87 Difference]: Start difference. First operand 20913 states and 37299 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:23,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:24:23,444 INFO L93 Difference]: Finished difference Result 54407 states and 97343 transitions. [2021-11-23 12:24:23,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:24:23,445 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-11-23 12:24:23,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:24:23,557 INFO L225 Difference]: With dead ends: 54407 [2021-11-23 12:24:23,557 INFO L226 Difference]: Without dead ends: 36088 [2021-11-23 12:24:23,593 INFO L932 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 [2021-11-23 12:24:23,595 INFO L933 BasicCegarLoop]: 1403 mSDtfsCounter, 1342 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:24:23,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1342 Valid, 2793 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:24:23,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36088 states. [2021-11-23 12:24:25,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36088 to 35543. [2021-11-23 12:24:25,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35543 states, 35537 states have (on average 1.7880518895798745) internal successors, (63542), 35542 states have internal predecessors, (63542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:25,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35543 states to 35543 states and 63542 transitions. [2021-11-23 12:24:25,731 INFO L78 Accepts]: Start accepts. Automaton has 35543 states and 63542 transitions. Word has length 73 [2021-11-23 12:24:25,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:24:25,731 INFO L470 AbstractCegarLoop]: Abstraction has 35543 states and 63542 transitions. [2021-11-23 12:24:25,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:25,732 INFO L276 IsEmpty]: Start isEmpty. Operand 35543 states and 63542 transitions. [2021-11-23 12:24:25,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 12:24:25,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:24:25,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:25,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 12:24:25,744 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:24:25,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:25,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1556397467, now seen corresponding path program 1 times [2021-11-23 12:24:25,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:25,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480053912] [2021-11-23 12:24:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:25,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:25,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:25,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:25,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480053912] [2021-11-23 12:24:25,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480053912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:25,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:25,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:24:25,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821494165] [2021-11-23 12:24:25,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:25,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:24:25,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:25,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:24:25,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:24:25,801 INFO L87 Difference]: Start difference. First operand 35543 states and 63542 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:28,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:24:28,505 INFO L93 Difference]: Finished difference Result 88654 states and 158082 transitions. [2021-11-23 12:24:28,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:24:28,506 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-23 12:24:28,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:24:28,708 INFO L225 Difference]: With dead ends: 88654 [2021-11-23 12:24:28,708 INFO L226 Difference]: Without dead ends: 57943 [2021-11-23 12:24:28,745 INFO L932 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 [2021-11-23 12:24:28,746 INFO L933 BasicCegarLoop]: 1403 mSDtfsCounter, 1340 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1340 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:24:28,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1340 Valid, 2719 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:24:28,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57943 states. [2021-11-23 12:24:31,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57943 to 57398. [2021-11-23 12:24:31,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57398 states, 57392 states have (on average 1.7777042096459437) internal successors, (102026), 57397 states have internal predecessors, (102026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57398 states to 57398 states and 102026 transitions. [2021-11-23 12:24:31,931 INFO L78 Accepts]: Start accepts. Automaton has 57398 states and 102026 transitions. Word has length 74 [2021-11-23 12:24:31,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:24:31,932 INFO L470 AbstractCegarLoop]: Abstraction has 57398 states and 102026 transitions. [2021-11-23 12:24:31,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 57398 states and 102026 transitions. [2021-11-23 12:24:31,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-23 12:24:31,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:24:31,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:31,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 12:24:31,945 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:24:31,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:31,946 INFO L85 PathProgramCache]: Analyzing trace with hash -160322959, now seen corresponding path program 1 times [2021-11-23 12:24:31,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:31,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341689164] [2021-11-23 12:24:31,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:31,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:31,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:32,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:32,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:32,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341689164] [2021-11-23 12:24:32,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341689164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:32,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:32,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:24:32,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995234733] [2021-11-23 12:24:32,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:32,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:24:32,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:32,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:24:32,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:24:32,005 INFO L87 Difference]: Start difference. First operand 57398 states and 102026 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:36,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:24:36,076 INFO L93 Difference]: Finished difference Result 147825 states and 262707 transitions. [2021-11-23 12:24:36,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:24:36,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-23 12:24:36,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:24:36,384 INFO L225 Difference]: With dead ends: 147825 [2021-11-23 12:24:36,384 INFO L226 Difference]: Without dead ends: 97597 [2021-11-23 12:24:36,434 INFO L932 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 [2021-11-23 12:24:36,435 INFO L933 BasicCegarLoop]: 1403 mSDtfsCounter, 1338 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:24:36,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1338 Valid, 2746 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:24:36,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97597 states. [2021-11-23 12:24:41,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97597 to 97052. [2021-11-23 12:24:41,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97052 states, 97046 states have (on average 1.7736949487871732) internal successors, (172130), 97051 states have internal predecessors, (172130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:41,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97052 states to 97052 states and 172130 transitions. [2021-11-23 12:24:41,589 INFO L78 Accepts]: Start accepts. Automaton has 97052 states and 172130 transitions. Word has length 75 [2021-11-23 12:24:41,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:24:41,590 INFO L470 AbstractCegarLoop]: Abstraction has 97052 states and 172130 transitions. [2021-11-23 12:24:41,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:41,590 INFO L276 IsEmpty]: Start isEmpty. Operand 97052 states and 172130 transitions. [2021-11-23 12:24:41,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 12:24:41,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:24:41,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:41,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 12:24:41,602 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:24:41,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:41,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1403813485, now seen corresponding path program 1 times [2021-11-23 12:24:41,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:41,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287509211] [2021-11-23 12:24:41,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:41,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:41,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:41,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:41,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:41,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287509211] [2021-11-23 12:24:41,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287509211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:41,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:41,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:24:41,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773213670] [2021-11-23 12:24:41,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:41,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:24:41,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:41,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:24:41,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:24:41,661 INFO L87 Difference]: Start difference. First operand 97052 states and 172130 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:48,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:24:48,615 INFO L93 Difference]: Finished difference Result 267597 states and 475759 transitions. [2021-11-23 12:24:48,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 12:24:48,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-11-23 12:24:48,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:24:49,424 INFO L225 Difference]: With dead ends: 267597 [2021-11-23 12:24:49,424 INFO L226 Difference]: Without dead ends: 179735 [2021-11-23 12:24:49,515 INFO L932 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 [2021-11-23 12:24:49,518 INFO L933 BasicCegarLoop]: 1403 mSDtfsCounter, 1336 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:24:49,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1336 Valid, 2793 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:24:49,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179735 states. [2021-11-23 12:24:57,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179735 to 179190. [2021-11-23 12:24:58,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179190 states, 179184 states have (on average 1.7761072417180106) internal successors, (318250), 179189 states have internal predecessors, (318250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:58,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179190 states to 179190 states and 318250 transitions. [2021-11-23 12:24:58,651 INFO L78 Accepts]: Start accepts. Automaton has 179190 states and 318250 transitions. Word has length 76 [2021-11-23 12:24:58,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:24:58,652 INFO L470 AbstractCegarLoop]: Abstraction has 179190 states and 318250 transitions. [2021-11-23 12:24:58,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:24:58,652 INFO L276 IsEmpty]: Start isEmpty. Operand 179190 states and 318250 transitions. [2021-11-23 12:24:58,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-23 12:24:58,664 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:24:58,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:24:58,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 12:24:58,665 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-23 12:24:58,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:24:58,666 INFO L85 PathProgramCache]: Analyzing trace with hash 2025192897, now seen corresponding path program 1 times [2021-11-23 12:24:58,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:24:58,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852597458] [2021-11-23 12:24:58,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:24:58,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:24:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:24:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:24:58,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:24:58,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852597458] [2021-11-23 12:24:58,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852597458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:24:58,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:24:58,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 12:24:58,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825079688] [2021-11-23 12:24:58,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:24:58,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 12:24:58,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:24:58,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 12:24:58,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 12:24:58,725 INFO L87 Difference]: Start difference. First operand 179190 states and 318250 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)