./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ae99bb-fb1b-4467-b112-933fd9ac9db6/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ae99bb-fb1b-4467-b112-933fd9ac9db6/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ae99bb-fb1b-4467-b112-933fd9ac9db6/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ae99bb-fb1b-4467-b112-933fd9ac9db6/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ae99bb-fb1b-4467-b112-933fd9ac9db6/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ae99bb-fb1b-4467-b112-933fd9ac9db6/bin/uautomizer-w2VwFs6gM0 --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 cb2818f0d8bce3a3c55c338823c603b0097898f29d2ecfaf46bb61225da928d8 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:57:22,389 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:57:22,393 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:57:22,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:57:22,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:57:22,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:57:22,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:57:22,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:57:22,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:57:22,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:57:22,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:57:22,481 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:57:22,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:57:22,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:57:22,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:57:22,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:57:22,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:57:22,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:57:22,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:57:22,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:57:22,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:57:22,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:57:22,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:57:22,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:57:22,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:57:22,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:57:22,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:57:22,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:57:22,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:57:22,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:57:22,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:57:22,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:57:22,531 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:57:22,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:57:22,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:57:22,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:57:22,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:57:22,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:57:22,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:57:22,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:57:22,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:57:22,538 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ae99bb-fb1b-4467-b112-933fd9ac9db6/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 14:57:22,585 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:57:22,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:57:22,587 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:57:22,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:57:22,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:57:22,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:57:22,595 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:57:22,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:57:22,596 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 14:57:22,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:57:22,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 14:57:22,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:57:22,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:57:22,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:57:22,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:57:22,598 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 14:57:22,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:57:22,599 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:57:22,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:57:22,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:57:22,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:57:22,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:57:22,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:57:22,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:57:22,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:57:22,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:57:22,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:57:22,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:57:22,602 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:57:22,602 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:57:22,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:57:22,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:57:22,603 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_60ae99bb-fb1b-4467-b112-933fd9ac9db6/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ae99bb-fb1b-4467-b112-933fd9ac9db6/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb2818f0d8bce3a3c55c338823c603b0097898f29d2ecfaf46bb61225da928d8 [2021-11-22 14:57:22,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:57:22,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:57:22,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:57:22,966 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:57:22,967 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:57:22,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ae99bb-fb1b-4467-b112-933fd9ac9db6/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c [2021-11-22 14:57:23,036 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ae99bb-fb1b-4467-b112-933fd9ac9db6/bin/uautomizer-w2VwFs6gM0/data/9fab7e942/b9cd2a5fd63e4964971b26e36e714992/FLAG992893aad [2021-11-22 14:57:23,689 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:57:23,690 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ae99bb-fb1b-4467-b112-933fd9ac9db6/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c [2021-11-22 14:57:23,726 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ae99bb-fb1b-4467-b112-933fd9ac9db6/bin/uautomizer-w2VwFs6gM0/data/9fab7e942/b9cd2a5fd63e4964971b26e36e714992/FLAG992893aad [2021-11-22 14:57:23,879 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ae99bb-fb1b-4467-b112-933fd9ac9db6/bin/uautomizer-w2VwFs6gM0/data/9fab7e942/b9cd2a5fd63e4964971b26e36e714992 [2021-11-22 14:57:23,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:57:23,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:57:23,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:57:23,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:57:23,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:57:23,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:57:23" (1/1) ... [2021-11-22 14:57:23,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f81b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:23, skipping insertion in model container [2021-11-22 14:57:23,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:57:23" (1/1) ... [2021-11-22 14:57:23,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:57:23,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:57:24,532 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_60ae99bb-fb1b-4467-b112-933fd9ac9db6/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c[73221,73234] [2021-11-22 14:57:24,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:57:24,547 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:57:24,696 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_60ae99bb-fb1b-4467-b112-933fd9ac9db6/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c[73221,73234] [2021-11-22 14:57:24,697 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:57:24,727 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:57:24,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:24 WrapperNode [2021-11-22 14:57:24,728 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:57:24,729 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:57:24,729 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:57:24,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:57:24,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:24" (1/1) ... [2021-11-22 14:57:24,767 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:24" (1/1) ... [2021-11-22 14:57:25,441 INFO L137 Inliner]: procedures = 95, calls = 354, calls flagged for inlining = 206, calls inlined = 1508, statements flattened = 46793 [2021-11-22 14:57:25,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:57:25,443 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:57:25,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:57:25,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:57:25,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:24" (1/1) ... [2021-11-22 14:57:25,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:24" (1/1) ... [2021-11-22 14:57:25,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:24" (1/1) ... [2021-11-22 14:57:25,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:24" (1/1) ... [2021-11-22 14:57:25,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:24" (1/1) ... [2021-11-22 14:57:26,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:24" (1/1) ... [2021-11-22 14:57:26,370 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:24" (1/1) ... [2021-11-22 14:57:26,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:57:26,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:57:26,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:57:26,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:57:26,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:24" (1/1) ... [2021-11-22 14:57:26,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:57:26,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ae99bb-fb1b-4467-b112-933fd9ac9db6/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:57:26,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ae99bb-fb1b-4467-b112-933fd9ac9db6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:57:26,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60ae99bb-fb1b-4467-b112-933fd9ac9db6/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:57:26,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:57:26,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:57:26,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:57:26,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:57:27,125 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:57:27,127 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:57:42,623 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:57:42,755 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:57:42,756 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 14:57:42,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:57:42 BoogieIcfgContainer [2021-11-22 14:57:42,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:57:42,774 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:57:42,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:57:42,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:57:42,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:57:23" (1/3) ... [2021-11-22 14:57:42,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49751a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:57:42, skipping insertion in model container [2021-11-22 14:57:42,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:57:24" (2/3) ... [2021-11-22 14:57:42,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49751a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:57:42, skipping insertion in model container [2021-11-22 14:57:42,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:57:42" (3/3) ... [2021-11-22 14:57:42,782 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product28.cil.c [2021-11-22 14:57:42,793 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:57:42,793 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-22 14:57:42,894 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:57:42,905 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 [2021-11-22 14:57:42,905 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-22 14:57:43,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 12788 states, 12777 states have (on average 1.865461375909838) internal successors, (23835), 12787 states have internal predecessors, (23835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:43,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-22 14:57:43,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:43,150 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] [2021-11-22 14:57:43,151 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 14:57:43,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:43,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1094299986, now seen corresponding path program 1 times [2021-11-22 14:57:43,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:43,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895926693] [2021-11-22 14:57:43,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:43,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:57:43,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:43,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:43,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895926693] [2021-11-22 14:57:43,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895926693] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:57:43,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:57:43,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:57:43,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150792804] [2021-11-22 14:57:43,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:57:43,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:57:43,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:43,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:57:43,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:57:43,638 INFO L87 Difference]: Start difference. First operand has 12788 states, 12777 states have (on average 1.865461375909838) internal successors, (23835), 12787 states have internal predecessors, (23835), 0 states have call successors, (0), 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 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:45,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:45,855 INFO L93 Difference]: Finished difference Result 50941 states and 94973 transitions. [2021-11-22 14:57:45,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:57:45,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-11-22 14:57:45,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:46,142 INFO L225 Difference]: With dead ends: 50941 [2021-11-22 14:57:46,143 INFO L226 Difference]: Without dead ends: 38159 [2021-11-22 14:57:46,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:57:46,186 INFO L933 BasicCegarLoop]: 47448 mSDtfsCounter, 71016 mSDsluCounter, 71199 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71016 SdHoareTripleChecker+Valid, 118647 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:46,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71016 Valid, 118647 Invalid, 77 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [13 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:57:46,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38159 states. [2021-11-22 14:57:46,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38159 to 12783. [2021-11-22 14:57:46,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12783 states, 12773 states have (on average 1.8644797619979645) internal successors, (23815), 12782 states have internal predecessors, (23815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:47,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12783 states to 12783 states and 23815 transitions. [2021-11-22 14:57:47,032 INFO L78 Accepts]: Start accepts. Automaton has 12783 states and 23815 transitions. Word has length 34 [2021-11-22 14:57:47,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:47,033 INFO L470 AbstractCegarLoop]: Abstraction has 12783 states and 23815 transitions. [2021-11-22 14:57:47,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:47,034 INFO L276 IsEmpty]: Start isEmpty. Operand 12783 states and 23815 transitions. [2021-11-22 14:57:47,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-22 14:57:47,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:47,038 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] [2021-11-22 14:57:47,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:57:47,039 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 14:57:47,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:47,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1172002607, now seen corresponding path program 1 times [2021-11-22 14:57:47,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:47,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565577924] [2021-11-22 14:57:47,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:47,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:57:47,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:47,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:47,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565577924] [2021-11-22 14:57:47,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565577924] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:57:47,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:57:47,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:57:47,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129174572] [2021-11-22 14:57:47,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:57:47,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:57:47,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:47,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:57:47,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:57:47,120 INFO L87 Difference]: Start difference. First operand 12783 states and 23815 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:47,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:47,676 INFO L93 Difference]: Finished difference Result 25480 states and 47475 transitions. [2021-11-22 14:57:47,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:57:47,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2021-11-22 14:57:47,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:47,721 INFO L225 Difference]: With dead ends: 25480 [2021-11-22 14:57:47,721 INFO L226 Difference]: Without dead ends: 12713 [2021-11-22 14:57:47,746 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 [2021-11-22 14:57:47,748 INFO L933 BasicCegarLoop]: 23673 mSDtfsCounter, 23665 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23665 SdHoareTripleChecker+Valid, 23681 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:47,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23665 Valid, 23681 Invalid, 4 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:57:47,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12713 states. [2021-11-22 14:57:48,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12713 to 12713. [2021-11-22 14:57:48,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12713 states, 12703 states have (on average 1.863732976462253) internal successors, (23675), 12712 states have internal predecessors, (23675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:48,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12713 states to 12713 states and 23675 transitions. [2021-11-22 14:57:48,371 INFO L78 Accepts]: Start accepts. Automaton has 12713 states and 23675 transitions. Word has length 35 [2021-11-22 14:57:48,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:48,373 INFO L470 AbstractCegarLoop]: Abstraction has 12713 states and 23675 transitions. [2021-11-22 14:57:48,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:48,374 INFO L276 IsEmpty]: Start isEmpty. Operand 12713 states and 23675 transitions. [2021-11-22 14:57:48,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-22 14:57:48,382 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:48,382 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] [2021-11-22 14:57:48,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 14:57:48,384 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 14:57:48,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:48,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1983173942, now seen corresponding path program 1 times [2021-11-22 14:57:48,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:48,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825408714] [2021-11-22 14:57:48,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:48,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:57:48,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:48,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:48,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825408714] [2021-11-22 14:57:48,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825408714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:57:48,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:57:48,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:57:48,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046524609] [2021-11-22 14:57:48,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:57:48,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:57:48,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:48,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:57:48,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:57:48,456 INFO L87 Difference]: Start difference. First operand 12713 states and 23675 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:48,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:48,980 INFO L93 Difference]: Finished difference Result 25398 states and 47311 transitions. [2021-11-22 14:57:48,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:57:48,981 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2021-11-22 14:57:48,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:49,020 INFO L225 Difference]: With dead ends: 25398 [2021-11-22 14:57:49,020 INFO L226 Difference]: Without dead ends: 12713 [2021-11-22 14:57:49,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:57:49,050 INFO L933 BasicCegarLoop]: 23645 mSDtfsCounter, 47296 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47296 SdHoareTripleChecker+Valid, 23679 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:49,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47296 Valid, 23679 Invalid, 38 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:57:49,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12713 states. [2021-11-22 14:57:49,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12713 to 12713. [2021-11-22 14:57:49,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12713 states, 12703 states have (on average 1.8635755333385815) internal successors, (23673), 12712 states have internal predecessors, (23673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:49,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12713 states to 12713 states and 23673 transitions. [2021-11-22 14:57:49,397 INFO L78 Accepts]: Start accepts. Automaton has 12713 states and 23673 transitions. Word has length 38 [2021-11-22 14:57:49,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:49,397 INFO L470 AbstractCegarLoop]: Abstraction has 12713 states and 23673 transitions. [2021-11-22 14:57:49,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:49,397 INFO L276 IsEmpty]: Start isEmpty. Operand 12713 states and 23673 transitions. [2021-11-22 14:57:49,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-22 14:57:49,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:49,401 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] [2021-11-22 14:57:49,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 14:57:49,402 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 14:57:49,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:49,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2080546911, now seen corresponding path program 1 times [2021-11-22 14:57:49,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:49,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005704578] [2021-11-22 14:57:49,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:49,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:49,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:57:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:49,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:49,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005704578] [2021-11-22 14:57:49,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005704578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:57:49,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:57:49,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:57:49,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357734269] [2021-11-22 14:57:49,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:57:49,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:57:49,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:49,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:57:49,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:57:49,509 INFO L87 Difference]: Start difference. First operand 12713 states and 23673 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:50,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:50,030 INFO L93 Difference]: Finished difference Result 25398 states and 47308 transitions. [2021-11-22 14:57:50,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:57:50,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2021-11-22 14:57:50,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:50,089 INFO L225 Difference]: With dead ends: 25398 [2021-11-22 14:57:50,089 INFO L226 Difference]: Without dead ends: 12713 [2021-11-22 14:57:50,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:57:50,111 INFO L933 BasicCegarLoop]: 23647 mSDtfsCounter, 47290 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47290 SdHoareTripleChecker+Valid, 23682 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:50,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47290 Valid, 23682 Invalid, 35 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:57:50,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12713 states. [2021-11-22 14:57:50,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12713 to 12713. [2021-11-22 14:57:50,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12713 states, 12703 states have (on average 1.8634180902149098) internal successors, (23671), 12712 states have internal predecessors, (23671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:50,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12713 states to 12713 states and 23671 transitions. [2021-11-22 14:57:50,473 INFO L78 Accepts]: Start accepts. Automaton has 12713 states and 23671 transitions. Word has length 39 [2021-11-22 14:57:50,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:50,474 INFO L470 AbstractCegarLoop]: Abstraction has 12713 states and 23671 transitions. [2021-11-22 14:57:50,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:50,474 INFO L276 IsEmpty]: Start isEmpty. Operand 12713 states and 23671 transitions. [2021-11-22 14:57:50,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-22 14:57:50,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:50,475 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] [2021-11-22 14:57:50,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 14:57:50,476 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 14:57:50,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:50,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1446704517, now seen corresponding path program 1 times [2021-11-22 14:57:50,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:50,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869713004] [2021-11-22 14:57:50,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:50,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:57:50,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:50,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:50,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869713004] [2021-11-22 14:57:50,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869713004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:57:50,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:57:50,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:57:50,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737417274] [2021-11-22 14:57:50,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:57:50,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:57:50,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:50,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:57:50,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:57:50,543 INFO L87 Difference]: Start difference. First operand 12713 states and 23671 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:51,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:51,319 INFO L93 Difference]: Finished difference Result 25398 states and 47305 transitions. [2021-11-22 14:57:51,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:57:51,319 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-11-22 14:57:51,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:51,358 INFO L225 Difference]: With dead ends: 25398 [2021-11-22 14:57:51,358 INFO L226 Difference]: Without dead ends: 12713 [2021-11-22 14:57:51,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:57:51,374 INFO L933 BasicCegarLoop]: 23649 mSDtfsCounter, 47284 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47284 SdHoareTripleChecker+Valid, 23685 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:51,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47284 Valid, 23685 Invalid, 32 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:57:51,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12713 states. [2021-11-22 14:57:51,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12713 to 12713. [2021-11-22 14:57:51,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12713 states, 12703 states have (on average 1.8632606470912383) internal successors, (23669), 12712 states have internal predecessors, (23669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:51,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12713 states to 12713 states and 23669 transitions. [2021-11-22 14:57:51,817 INFO L78 Accepts]: Start accepts. Automaton has 12713 states and 23669 transitions. Word has length 40 [2021-11-22 14:57:51,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:51,817 INFO L470 AbstractCegarLoop]: Abstraction has 12713 states and 23669 transitions. [2021-11-22 14:57:51,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:51,818 INFO L276 IsEmpty]: Start isEmpty. Operand 12713 states and 23669 transitions. [2021-11-22 14:57:51,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-22 14:57:51,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:51,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:57:51,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 14:57:51,819 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 14:57:51,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:51,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1373195260, now seen corresponding path program 1 times [2021-11-22 14:57:51,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:51,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669655337] [2021-11-22 14:57:51,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:51,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:57:51,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:51,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:51,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669655337] [2021-11-22 14:57:51,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669655337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:57:51,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:57:51,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 14:57:51,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644357807] [2021-11-22 14:57:51,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:57:51,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 14:57:51,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:51,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 14:57:51,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 14:57:51,894 INFO L87 Difference]: Start difference. First operand 12713 states and 23669 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:52,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:52,499 INFO L93 Difference]: Finished difference Result 25398 states and 47302 transitions. [2021-11-22 14:57:52,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 14:57:52,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-22 14:57:52,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:52,542 INFO L225 Difference]: With dead ends: 25398 [2021-11-22 14:57:52,542 INFO L226 Difference]: Without dead ends: 12713 [2021-11-22 14:57:52,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:57:52,557 INFO L933 BasicCegarLoop]: 23651 mSDtfsCounter, 47278 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47278 SdHoareTripleChecker+Valid, 23688 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:52,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47278 Valid, 23688 Invalid, 29 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:57:52,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12713 states. [2021-11-22 14:57:52,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12713 to 12713. [2021-11-22 14:57:52,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12713 states, 12703 states have (on average 1.8631032039675668) internal successors, (23667), 12712 states have internal predecessors, (23667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:53,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12713 states to 12713 states and 23667 transitions. [2021-11-22 14:57:53,017 INFO L78 Accepts]: Start accepts. Automaton has 12713 states and 23667 transitions. Word has length 41 [2021-11-22 14:57:53,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:53,018 INFO L470 AbstractCegarLoop]: Abstraction has 12713 states and 23667 transitions. [2021-11-22 14:57:53,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:53,018 INFO L276 IsEmpty]: Start isEmpty. Operand 12713 states and 23667 transitions. [2021-11-22 14:57:53,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-22 14:57:53,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:53,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:57:53,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 14:57:53,022 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 14:57:53,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:53,022 INFO L85 PathProgramCache]: Analyzing trace with hash 527606014, now seen corresponding path program 1 times [2021-11-22 14:57:53,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:53,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031485597] [2021-11-22 14:57:53,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:53,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:53,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:57:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:53,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:53,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031485597] [2021-11-22 14:57:53,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031485597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:57:53,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:57:53,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:57:53,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837794667] [2021-11-22 14:57:53,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:57:53,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:57:53,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:53,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:57:53,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:57:53,135 INFO L87 Difference]: Start difference. First operand 12713 states and 23667 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:53,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:57:53,690 INFO L93 Difference]: Finished difference Result 25398 states and 47299 transitions. [2021-11-22 14:57:53,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:57:53,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-22 14:57:53,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:57:53,720 INFO L225 Difference]: With dead ends: 25398 [2021-11-22 14:57:53,721 INFO L226 Difference]: Without dead ends: 12713 [2021-11-22 14:57:53,732 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 [2021-11-22 14:57:53,733 INFO L933 BasicCegarLoop]: 23641 mSDtfsCounter, 70927 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70927 SdHoareTripleChecker+Valid, 23681 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:57:53,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70927 Valid, 23681 Invalid, 40 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:57:53,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12713 states. [2021-11-22 14:57:54,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12713 to 12713. [2021-11-22 14:57:54,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12713 states, 12703 states have (on average 1.862945760843895) internal successors, (23665), 12712 states have internal predecessors, (23665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:54,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12713 states to 12713 states and 23665 transitions. [2021-11-22 14:57:54,116 INFO L78 Accepts]: Start accepts. Automaton has 12713 states and 23665 transitions. Word has length 42 [2021-11-22 14:57:54,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:57:54,116 INFO L470 AbstractCegarLoop]: Abstraction has 12713 states and 23665 transitions. [2021-11-22 14:57:54,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:57:54,117 INFO L276 IsEmpty]: Start isEmpty. Operand 12713 states and 23665 transitions. [2021-11-22 14:57:54,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-22 14:57:54,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:57:54,118 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:57:54,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 14:57:54,118 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 14:57:54,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:57:54,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1345254464, now seen corresponding path program 1 times [2021-11-22 14:57:54,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:57:54,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824183476] [2021-11-22 14:57:54,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:57:54,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:57:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:57:54,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:57:54,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:57:54,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824183476] [2021-11-22 14:57:54,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824183476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:57:54,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:57:54,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:57:54,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552248483] [2021-11-22 14:57:54,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:57:54,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:57:54,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:57:54,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:57:54,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:57:54,211 INFO L87 Difference]: Start difference. First operand 12713 states and 23665 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:00,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:58:00,093 INFO L93 Difference]: Finished difference Result 106656 states and 198645 transitions. [2021-11-22 14:58:00,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 14:58:00,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-22 14:58:00,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:58:00,438 INFO L225 Difference]: With dead ends: 106656 [2021-11-22 14:58:00,438 INFO L226 Difference]: Without dead ends: 94057 [2021-11-22 14:58:00,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 14:58:00,460 INFO L933 BasicCegarLoop]: 49934 mSDtfsCounter, 161943 mSDsluCounter, 134259 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 544 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161943 SdHoareTripleChecker+Valid, 184193 SdHoareTripleChecker+Invalid, 2312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 544 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-22 14:58:00,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161943 Valid, 184193 Invalid, 2312 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [544 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-22 14:58:00,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94057 states. [2021-11-22 14:58:01,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94057 to 24014. [2021-11-22 14:58:01,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24014 states, 24004 states have (on average 1.8625229128478586) internal successors, (44708), 24013 states have internal predecessors, (44708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:01,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24014 states to 24014 states and 44708 transitions. [2021-11-22 14:58:01,827 INFO L78 Accepts]: Start accepts. Automaton has 24014 states and 44708 transitions. Word has length 42 [2021-11-22 14:58:01,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:58:01,828 INFO L470 AbstractCegarLoop]: Abstraction has 24014 states and 44708 transitions. [2021-11-22 14:58:01,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:01,828 INFO L276 IsEmpty]: Start isEmpty. Operand 24014 states and 44708 transitions. [2021-11-22 14:58:01,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-22 14:58:01,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:58:01,829 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:58:01,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 14:58:01,830 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 14:58:01,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:58:01,830 INFO L85 PathProgramCache]: Analyzing trace with hash 2037968421, now seen corresponding path program 1 times [2021-11-22 14:58:01,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:58:01,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779985182] [2021-11-22 14:58:01,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:58:01,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:58:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:58:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:58:01,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:58:01,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779985182] [2021-11-22 14:58:01,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779985182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:58:01,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:58:01,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:58:01,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305877389] [2021-11-22 14:58:01,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:58:01,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:58:01,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:58:01,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:58:01,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:58:01,881 INFO L87 Difference]: Start difference. First operand 24014 states and 44708 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:04,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:58:04,073 INFO L93 Difference]: Finished difference Result 67371 states and 125068 transitions. [2021-11-22 14:58:04,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 14:58:04,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2021-11-22 14:58:04,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:58:04,140 INFO L225 Difference]: With dead ends: 67371 [2021-11-22 14:58:04,140 INFO L226 Difference]: Without dead ends: 43433 [2021-11-22 14:58:04,157 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 [2021-11-22 14:58:04,158 INFO L933 BasicCegarLoop]: 23495 mSDtfsCounter, 70098 mSDsluCounter, 57405 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70098 SdHoareTripleChecker+Valid, 80900 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 14:58:04,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70098 Valid, 80900 Invalid, 715 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [225 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 14:58:04,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43433 states. [2021-11-22 14:58:05,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43433 to 42456. [2021-11-22 14:58:05,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42456 states, 42446 states have (on average 1.8611883334118644) internal successors, (79000), 42455 states have internal predecessors, (79000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:05,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42456 states to 42456 states and 79000 transitions. [2021-11-22 14:58:05,701 INFO L78 Accepts]: Start accepts. Automaton has 42456 states and 79000 transitions. Word has length 42 [2021-11-22 14:58:05,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:58:05,702 INFO L470 AbstractCegarLoop]: Abstraction has 42456 states and 79000 transitions. [2021-11-22 14:58:05,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:05,702 INFO L276 IsEmpty]: Start isEmpty. Operand 42456 states and 79000 transitions. [2021-11-22 14:58:05,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-22 14:58:05,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:58:05,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:58:05,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 14:58:05,704 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 14:58:05,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:58:05,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1165929510, now seen corresponding path program 1 times [2021-11-22 14:58:05,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:58:05,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495511858] [2021-11-22 14:58:05,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:58:05,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:58:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:58:05,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:58:05,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:58:05,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495511858] [2021-11-22 14:58:05,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495511858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:58:05,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:58:05,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:58:05,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480481396] [2021-11-22 14:58:05,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:58:05,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:58:05,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:58:05,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:58:05,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:58:05,742 INFO L87 Difference]: Start difference. First operand 42456 states and 79000 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:08,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:58:08,616 INFO L93 Difference]: Finished difference Result 126200 states and 234798 transitions. [2021-11-22 14:58:08,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:58:08,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-22 14:58:08,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:58:08,746 INFO L225 Difference]: With dead ends: 126200 [2021-11-22 14:58:08,747 INFO L226 Difference]: Without dead ends: 83780 [2021-11-22 14:58:08,780 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 [2021-11-22 14:58:08,781 INFO L933 BasicCegarLoop]: 32465 mSDtfsCounter, 22817 mSDsluCounter, 22823 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22817 SdHoareTripleChecker+Valid, 55288 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 14:58:08,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22817 Valid, 55288 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 14:58:08,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83780 states. [2021-11-22 14:58:10,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83780 to 42332. [2021-11-22 14:58:10,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42332 states, 42322 states have (on average 1.860781626577194) internal successors, (78752), 42331 states have internal predecessors, (78752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:10,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42332 states to 42332 states and 78752 transitions. [2021-11-22 14:58:10,454 INFO L78 Accepts]: Start accepts. Automaton has 42332 states and 78752 transitions. Word has length 43 [2021-11-22 14:58:10,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:58:10,454 INFO L470 AbstractCegarLoop]: Abstraction has 42332 states and 78752 transitions. [2021-11-22 14:58:10,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:10,454 INFO L276 IsEmpty]: Start isEmpty. Operand 42332 states and 78752 transitions. [2021-11-22 14:58:10,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-22 14:58:10,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:58:10,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:58:10,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 14:58:10,456 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 14:58:10,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:58:10,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1658643983, now seen corresponding path program 1 times [2021-11-22 14:58:10,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:58:10,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835591705] [2021-11-22 14:58:10,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:58:10,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:58:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:58:10,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:58:10,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:58:10,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835591705] [2021-11-22 14:58:10,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835591705] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:58:10,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:58:10,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 14:58:10,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758791666] [2021-11-22 14:58:10,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:58:10,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 14:58:10,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:58:10,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 14:58:10,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 14:58:10,524 INFO L87 Difference]: Start difference. First operand 42332 states and 78752 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:14,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:58:14,556 INFO L93 Difference]: Finished difference Result 101407 states and 188375 transitions. [2021-11-22 14:58:14,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 14:58:14,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-22 14:58:14,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:58:14,658 INFO L225 Difference]: With dead ends: 101407 [2021-11-22 14:58:14,658 INFO L226 Difference]: Without dead ends: 59113 [2021-11-22 14:58:14,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 14:58:14,685 INFO L933 BasicCegarLoop]: 22131 mSDtfsCounter, 60955 mSDsluCounter, 55680 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60955 SdHoareTripleChecker+Valid, 77811 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:58:14,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60955 Valid, 77811 Invalid, 2591 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [656 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-22 14:58:14,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59113 states. [2021-11-22 14:58:16,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59113 to 58537. [2021-11-22 14:58:16,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58537 states, 58527 states have (on average 1.8462760777077247) internal successors, (108057), 58536 states have internal predecessors, (108057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:16,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58537 states to 58537 states and 108057 transitions. [2021-11-22 14:58:16,761 INFO L78 Accepts]: Start accepts. Automaton has 58537 states and 108057 transitions. Word has length 43 [2021-11-22 14:58:16,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:58:16,761 INFO L470 AbstractCegarLoop]: Abstraction has 58537 states and 108057 transitions. [2021-11-22 14:58:16,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:16,761 INFO L276 IsEmpty]: Start isEmpty. Operand 58537 states and 108057 transitions. [2021-11-22 14:58:16,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-22 14:58:16,762 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:58:16,763 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] [2021-11-22 14:58:16,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 14:58:16,763 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-22 14:58:16,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:58:16,764 INFO L85 PathProgramCache]: Analyzing trace with hash 260823896, now seen corresponding path program 1 times [2021-11-22 14:58:16,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:58:16,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21240844] [2021-11-22 14:58:16,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:58:16,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:58:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:58:16,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:58:16,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:58:16,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21240844] [2021-11-22 14:58:16,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21240844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:58:16,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:58:16,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 14:58:16,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594666323] [2021-11-22 14:58:16,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:58:16,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 14:58:16,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:58:16,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 14:58:16,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 14:58:16,822 INFO L87 Difference]: Start difference. First operand 58537 states and 108057 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 14:58:23,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:58:23,466 INFO L93 Difference]: Finished difference Result 175863 states and 323783 transitions. [2021-11-22 14:58:23,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-22 14:58:23,467 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-11-22 14:58:23,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:58:23,689 INFO L225 Difference]: With dead ends: 175863 [2021-11-22 14:58:23,690 INFO L226 Difference]: Without dead ends: 117370 [2021-11-22 14:58:23,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-11-22 14:58:23,733 INFO L933 BasicCegarLoop]: 22480 mSDtfsCounter, 175388 mSDsluCounter, 132639 mSDsCounter, 0 mSdLazyCounter, 2577 mSolverCounterSat, 449 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175388 SdHoareTripleChecker+Valid, 155119 SdHoareTripleChecker+Invalid, 3026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 449 IncrementalHoareTripleChecker+Valid, 2577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:58:23,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175388 Valid, 155119 Invalid, 3026 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [449 Valid, 2577 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-22 14:58:23,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117370 states.