./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label02.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_419610e2-115f-47ee-81a6-6d6ca0e3188a/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419610e2-115f-47ee-81a6-6d6ca0e3188a/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_419610e2-115f-47ee-81a6-6d6ca0e3188a/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419610e2-115f-47ee-81a6-6d6ca0e3188a/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419610e2-115f-47ee-81a6-6d6ca0e3188a/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_419610e2-115f-47ee-81a6-6d6ca0e3188a/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 48aec8d1d241a0a7736380f3571da3a89472d426f8d78df6e318e9a8d52f121e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:35:02,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:35:02,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:35:02,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:35:02,543 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:35:02,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:35:02,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:35:02,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:35:02,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:35:02,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:35:02,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:35:02,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:35:02,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:35:02,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:35:02,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:35:02,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:35:02,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:35:02,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:35:02,588 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:35:02,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:35:02,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:35:02,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:35:02,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:35:02,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:35:02,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:35:02,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:35:02,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:35:02,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:35:02,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:35:02,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:35:02,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:35:02,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:35:02,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:35:02,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:35:02,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:35:02,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:35:02,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:35:02,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:35:02,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:35:02,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:35:02,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:35:02,621 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419610e2-115f-47ee-81a6-6d6ca0e3188a/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:35:02,646 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:35:02,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:35:02,646 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:35:02,647 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:35:02,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:35:02,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:35:02,648 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:35:02,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:35:02,649 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:35:02,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:35:02,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:35:02,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:35:02,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:35:02,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:35:02,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:35:02,650 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:35:02,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:35:02,651 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:35:02,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:35:02,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:35:02,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:35:02,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:35:02,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:35:02,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:35:02,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:35:02,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:35:02,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:35:02,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:35:02,654 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:35:02,654 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:35:02,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:35:02,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:35:02,654 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_419610e2-115f-47ee-81a6-6d6ca0e3188a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419610e2-115f-47ee-81a6-6d6ca0e3188a/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48aec8d1d241a0a7736380f3571da3a89472d426f8d78df6e318e9a8d52f121e [2021-11-22 15:35:02,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:35:03,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:35:03,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:35:03,034 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:35:03,035 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:35:03,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419610e2-115f-47ee-81a6-6d6ca0e3188a/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/eca-rers2012/Problem13_label02.c [2021-11-22 15:35:03,108 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419610e2-115f-47ee-81a6-6d6ca0e3188a/bin/uautomizer-w2VwFs6gM0/data/46e608f45/2bf0bdd85bba4b0b8908a126d7be56e5/FLAG2341a15a4 [2021-11-22 15:35:04,008 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:35:04,010 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419610e2-115f-47ee-81a6-6d6ca0e3188a/sv-benchmarks/c/eca-rers2012/Problem13_label02.c [2021-11-22 15:35:04,054 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419610e2-115f-47ee-81a6-6d6ca0e3188a/bin/uautomizer-w2VwFs6gM0/data/46e608f45/2bf0bdd85bba4b0b8908a126d7be56e5/FLAG2341a15a4 [2021-11-22 15:35:04,446 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419610e2-115f-47ee-81a6-6d6ca0e3188a/bin/uautomizer-w2VwFs6gM0/data/46e608f45/2bf0bdd85bba4b0b8908a126d7be56e5 [2021-11-22 15:35:04,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:35:04,451 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:35:04,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:35:04,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:35:04,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:35:04,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:35:04" (1/1) ... [2021-11-22 15:35:04,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15b2cd5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:04, skipping insertion in model container [2021-11-22 15:35:04,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:35:04" (1/1) ... [2021-11-22 15:35:04,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:35:04,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:35:04,957 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_419610e2-115f-47ee-81a6-6d6ca0e3188a/sv-benchmarks/c/eca-rers2012/Problem13_label02.c[5671,5684] [2021-11-22 15:35:06,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:35:06,042 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:35:06,081 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_419610e2-115f-47ee-81a6-6d6ca0e3188a/sv-benchmarks/c/eca-rers2012/Problem13_label02.c[5671,5684] [2021-11-22 15:35:06,851 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:35:06,880 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:35:06,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:06 WrapperNode [2021-11-22 15:35:06,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:35:06,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:35:06,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:35:06,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:35:06,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:06" (1/1) ... [2021-11-22 15:35:06,980 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:06" (1/1) ... [2021-11-22 15:35:07,591 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2021-11-22 15:35:07,591 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:35:07,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:35:07,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:35:07,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:35:07,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:06" (1/1) ... [2021-11-22 15:35:07,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:06" (1/1) ... [2021-11-22 15:35:07,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:06" (1/1) ... [2021-11-22 15:35:07,908 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:06" (1/1) ... [2021-11-22 15:35:08,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:06" (1/1) ... [2021-11-22 15:35:08,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:06" (1/1) ... [2021-11-22 15:35:08,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:06" (1/1) ... [2021-11-22 15:35:08,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:35:08,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:35:08,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:35:08,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:35:08,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:06" (1/1) ... [2021-11-22 15:35:08,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:35:08,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419610e2-115f-47ee-81a6-6d6ca0e3188a/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:35:08,792 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419610e2-115f-47ee-81a6-6d6ca0e3188a/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:35:08,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419610e2-115f-47ee-81a6-6d6ca0e3188a/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:35:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:35:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:35:08,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:35:08,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:35:08,961 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:35:08,962 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:35:15,194 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:35:15,221 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:35:15,221 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 15:35:15,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:35:15 BoogieIcfgContainer [2021-11-22 15:35:15,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:35:15,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:35:15,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:35:15,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:35:15,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:35:04" (1/3) ... [2021-11-22 15:35:15,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160311f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:35:15, skipping insertion in model container [2021-11-22 15:35:15,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:35:06" (2/3) ... [2021-11-22 15:35:15,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160311f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:35:15, skipping insertion in model container [2021-11-22 15:35:15,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:35:15" (3/3) ... [2021-11-22 15:35:15,234 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label02.c [2021-11-22 15:35:15,240 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:35:15,240 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-22 15:35:15,295 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:35:15,302 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 15:35:15,303 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-22 15:35:15,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 15:35:15,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-22 15:35:15,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:15,352 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 15:35:15,352 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:15,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:15,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1453294289, now seen corresponding path program 1 times [2021-11-22 15:35:15,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:15,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578902827] [2021-11-22 15:35:15,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:15,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:15,744 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 15:35:15,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:15,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578902827] [2021-11-22 15:35:15,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578902827] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:15,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:15,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:15,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307758162] [2021-11-22 15:35:15,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:15,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:35:15,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:15,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:35:15,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:35:15,800 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 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 9.75) internal successors, (39), 3 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 15:35:23,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:23,944 INFO L93 Difference]: Finished difference Result 3829 states and 7206 transitions. [2021-11-22 15:35:23,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:35:23,947 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 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 15:35:23,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:23,983 INFO L225 Difference]: With dead ends: 3829 [2021-11-22 15:35:23,983 INFO L226 Difference]: Without dead ends: 2664 [2021-11-22 15:35:23,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:35:23,995 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 2712 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 4246 mSolverCounterSat, 1610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2712 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 5856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1610 IncrementalHoareTripleChecker+Valid, 4246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:23,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2712 Valid, 1067 Invalid, 5856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1610 Valid, 4246 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2021-11-22 15:35:24,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2664 states. [2021-11-22 15:35:24,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2664 to 2663. [2021-11-22 15:35:24,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2663 states, 2662 states have (on average 1.460931630353118) internal successors, (3889), 2662 states have internal predecessors, (3889), 0 states have call successors, (0), 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 15:35:24,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 3889 transitions. [2021-11-22 15:35:24,134 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 3889 transitions. Word has length 39 [2021-11-22 15:35:24,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:24,135 INFO L470 AbstractCegarLoop]: Abstraction has 2663 states and 3889 transitions. [2021-11-22 15:35:24,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 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 15:35:24,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 3889 transitions. [2021-11-22 15:35:24,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-22 15:35:24,142 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:24,142 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:24,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:35:24,143 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:24,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:24,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1912821561, now seen corresponding path program 1 times [2021-11-22 15:35:24,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:24,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713422115] [2021-11-22 15:35:24,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:24,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:24,451 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:35:24,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:24,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713422115] [2021-11-22 15:35:24,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713422115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:24,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:24,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:24,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291328553] [2021-11-22 15:35:24,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:24,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:35:24,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:24,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:35:24,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:35:24,459 INFO L87 Difference]: Start difference. First operand 2663 states and 3889 transitions. Second operand has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:32,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:32,350 INFO L93 Difference]: Finished difference Result 7864 states and 12669 transitions. [2021-11-22 15:35:32,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:35:32,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-11-22 15:35:32,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:32,389 INFO L225 Difference]: With dead ends: 7864 [2021-11-22 15:35:32,390 INFO L226 Difference]: Without dead ends: 5990 [2021-11-22 15:35:32,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:35:32,396 INFO L933 BasicCegarLoop]: 894 mSDtfsCounter, 1640 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 6333 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1640 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 7164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 6333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:32,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1640 Valid, 1191 Invalid, 7164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 6333 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2021-11-22 15:35:32,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5990 states. [2021-11-22 15:35:32,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5990 to 5859. [2021-11-22 15:35:32,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5859 states, 5858 states have (on average 1.4452031410037556) internal successors, (8466), 5858 states have internal predecessors, (8466), 0 states have call successors, (0), 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 15:35:32,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 8466 transitions. [2021-11-22 15:35:32,578 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 8466 transitions. Word has length 164 [2021-11-22 15:35:32,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:32,580 INFO L470 AbstractCegarLoop]: Abstraction has 5859 states and 8466 transitions. [2021-11-22 15:35:32,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.0) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:35:32,580 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 8466 transitions. [2021-11-22 15:35:32,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-22 15:35:32,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:32,587 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:32,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:35:32,587 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:32,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:32,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1291731195, now seen corresponding path program 1 times [2021-11-22 15:35:32,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:32,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971824402] [2021-11-22 15:35:32,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:32,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:32,821 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-22 15:35:32,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:32,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971824402] [2021-11-22 15:35:32,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971824402] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:32,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:32,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:35:32,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102351480] [2021-11-22 15:35:32,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:32,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:35:32,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:32,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:35:32,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:32,825 INFO L87 Difference]: Start difference. First operand 5859 states and 8466 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 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 15:35:36,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:36,731 INFO L93 Difference]: Finished difference Result 15685 states and 23389 transitions. [2021-11-22 15:35:36,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:35:36,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 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 206 [2021-11-22 15:35:36,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:36,793 INFO L225 Difference]: With dead ends: 15685 [2021-11-22 15:35:36,793 INFO L226 Difference]: Without dead ends: 10615 [2021-11-22 15:35:36,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:36,803 INFO L933 BasicCegarLoop]: 784 mSDtfsCounter, 918 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 2553 mSolverCounterSat, 757 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 3310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 757 IncrementalHoareTripleChecker+Valid, 2553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:36,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 916 Invalid, 3310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [757 Valid, 2553 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-22 15:35:36,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10615 states. [2021-11-22 15:35:37,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10615 to 10608. [2021-11-22 15:35:37,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10608 states, 10607 states have (on average 1.3551428302064674) internal successors, (14374), 10607 states have internal predecessors, (14374), 0 states have call successors, (0), 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 15:35:37,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10608 states to 10608 states and 14374 transitions. [2021-11-22 15:35:37,055 INFO L78 Accepts]: Start accepts. Automaton has 10608 states and 14374 transitions. Word has length 206 [2021-11-22 15:35:37,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:37,056 INFO L470 AbstractCegarLoop]: Abstraction has 10608 states and 14374 transitions. [2021-11-22 15:35:37,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 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 15:35:37,056 INFO L276 IsEmpty]: Start isEmpty. Operand 10608 states and 14374 transitions. [2021-11-22 15:35:37,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-22 15:35:37,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:37,061 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:37,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:35:37,061 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:37,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:37,062 INFO L85 PathProgramCache]: Analyzing trace with hash -333607138, now seen corresponding path program 1 times [2021-11-22 15:35:37,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:37,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886051852] [2021-11-22 15:35:37,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:37,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:37,260 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-22 15:35:37,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:37,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886051852] [2021-11-22 15:35:37,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886051852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:37,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:37,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:35:37,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703858746] [2021-11-22 15:35:37,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:37,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:35:37,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:37,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:35:37,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:37,265 INFO L87 Difference]: Start difference. First operand 10608 states and 14374 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 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 15:35:41,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:41,320 INFO L93 Difference]: Finished difference Result 28349 states and 39239 transitions. [2021-11-22 15:35:41,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:35:41,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 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 220 [2021-11-22 15:35:41,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:41,392 INFO L225 Difference]: With dead ends: 28349 [2021-11-22 15:35:41,392 INFO L226 Difference]: Without dead ends: 18530 [2021-11-22 15:35:41,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:41,409 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 907 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 2871 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 3416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 2871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:41,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [907 Valid, 614 Invalid, 3416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 2871 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-22 15:35:41,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18530 states. [2021-11-22 15:35:41,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18530 to 18523. [2021-11-22 15:35:41,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18523 states, 18522 states have (on average 1.3250188964474678) internal successors, (24542), 18522 states have internal predecessors, (24542), 0 states have call successors, (0), 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 15:35:41,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18523 states to 18523 states and 24542 transitions. [2021-11-22 15:35:41,818 INFO L78 Accepts]: Start accepts. Automaton has 18523 states and 24542 transitions. Word has length 220 [2021-11-22 15:35:41,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:41,819 INFO L470 AbstractCegarLoop]: Abstraction has 18523 states and 24542 transitions. [2021-11-22 15:35:41,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 2 states have internal predecessors, (137), 0 states have call successors, (0), 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 15:35:41,819 INFO L276 IsEmpty]: Start isEmpty. Operand 18523 states and 24542 transitions. [2021-11-22 15:35:41,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-22 15:35:41,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:41,826 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:41,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:35:41,826 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:41,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:41,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1947524445, now seen corresponding path program 1 times [2021-11-22 15:35:41,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:41,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305143659] [2021-11-22 15:35:41,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:41,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:41,963 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-11-22 15:35:41,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:41,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305143659] [2021-11-22 15:35:41,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305143659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:41,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:41,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:35:41,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556269450] [2021-11-22 15:35:41,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:41,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:35:41,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:41,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:35:41,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:41,967 INFO L87 Difference]: Start difference. First operand 18523 states and 24542 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 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 15:35:45,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:45,991 INFO L93 Difference]: Finished difference Result 51208 states and 68744 transitions. [2021-11-22 15:35:45,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:35:45,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 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 257 [2021-11-22 15:35:45,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:46,067 INFO L225 Difference]: With dead ends: 51208 [2021-11-22 15:35:46,067 INFO L226 Difference]: Without dead ends: 33474 [2021-11-22 15:35:46,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:46,092 INFO L933 BasicCegarLoop]: 839 mSDtfsCounter, 860 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 870 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 870 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:46,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 986 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [870 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-22 15:35:46,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33474 states. [2021-11-22 15:35:46,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33474 to 31109. [2021-11-22 15:35:46,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31109 states, 31108 states have (on average 1.2544361579015044) internal successors, (39023), 31108 states have internal predecessors, (39023), 0 states have call successors, (0), 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 15:35:46,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31109 states to 31109 states and 39023 transitions. [2021-11-22 15:35:46,810 INFO L78 Accepts]: Start accepts. Automaton has 31109 states and 39023 transitions. Word has length 257 [2021-11-22 15:35:46,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:46,811 INFO L470 AbstractCegarLoop]: Abstraction has 31109 states and 39023 transitions. [2021-11-22 15:35:46,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 2 states have internal predecessors, (163), 0 states have call successors, (0), 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 15:35:46,813 INFO L276 IsEmpty]: Start isEmpty. Operand 31109 states and 39023 transitions. [2021-11-22 15:35:46,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-11-22 15:35:46,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:46,824 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:46,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:35:46,825 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:46,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:46,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1064755178, now seen corresponding path program 1 times [2021-11-22 15:35:46,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:46,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649348905] [2021-11-22 15:35:46,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:46,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:46,948 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-22 15:35:46,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:46,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649348905] [2021-11-22 15:35:46,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649348905] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:46,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:46,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:46,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728857765] [2021-11-22 15:35:46,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:46,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:35:46,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:46,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:35:46,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:35:46,951 INFO L87 Difference]: Start difference. First operand 31109 states and 39023 transitions. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 15:35:51,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:35:51,279 INFO L93 Difference]: Finished difference Result 87412 states and 110601 transitions. [2021-11-22 15:35:51,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:35:51,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 279 [2021-11-22 15:35:51,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:35:51,393 INFO L225 Difference]: With dead ends: 87412 [2021-11-22 15:35:51,394 INFO L226 Difference]: Without dead ends: 57092 [2021-11-22 15:35:51,433 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 15:35:51,434 INFO L933 BasicCegarLoop]: 791 mSDtfsCounter, 889 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 3297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 920 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:35:51,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [889 Valid, 907 Invalid, 3297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [920 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-11-22 15:35:51,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57092 states. [2021-11-22 15:35:52,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57092 to 57082. [2021-11-22 15:35:52,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57082 states, 57081 states have (on average 1.1981920428864246) internal successors, (68394), 57081 states have internal predecessors, (68394), 0 states have call successors, (0), 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 15:35:52,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57082 states to 57082 states and 68394 transitions. [2021-11-22 15:35:52,841 INFO L78 Accepts]: Start accepts. Automaton has 57082 states and 68394 transitions. Word has length 279 [2021-11-22 15:35:52,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:35:52,842 INFO L470 AbstractCegarLoop]: Abstraction has 57082 states and 68394 transitions. [2021-11-22 15:35:52,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 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 15:35:52,843 INFO L276 IsEmpty]: Start isEmpty. Operand 57082 states and 68394 transitions. [2021-11-22 15:35:52,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-22 15:35:52,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:35:52,853 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:35:52,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:35:52,853 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:35:52,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:35:52,855 INFO L85 PathProgramCache]: Analyzing trace with hash -136295388, now seen corresponding path program 1 times [2021-11-22 15:35:52,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:35:52,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622314139] [2021-11-22 15:35:52,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:35:52,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:35:53,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:35:53,250 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-22 15:35:53,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:35:53,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622314139] [2021-11-22 15:35:53,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622314139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:35:53,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:35:53,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:35:53,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901418612] [2021-11-22 15:35:53,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:35:53,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:35:53,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:35:53,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:35:53,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:35:53,254 INFO L87 Difference]: Start difference. First operand 57082 states and 68394 transitions. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 15:36:01,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:01,495 INFO L93 Difference]: Finished difference Result 154524 states and 187111 transitions. [2021-11-22 15:36:01,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:36:01,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 307 [2021-11-22 15:36:01,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:36:01,640 INFO L225 Difference]: With dead ends: 154524 [2021-11-22 15:36:01,641 INFO L226 Difference]: Without dead ends: 98231 [2021-11-22 15:36:01,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:36:01,676 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 1735 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 6696 mSolverCounterSat, 1118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1735 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 7814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1118 IncrementalHoareTripleChecker+Valid, 6696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:36:01,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1735 Valid, 743 Invalid, 7814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1118 Valid, 6696 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2021-11-22 15:36:01,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98231 states. [2021-11-22 15:36:03,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98231 to 98101. [2021-11-22 15:36:03,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98101 states, 98100 states have (on average 1.1910601427115188) internal successors, (116843), 98100 states have internal predecessors, (116843), 0 states have call successors, (0), 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 15:36:03,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98101 states to 98101 states and 116843 transitions. [2021-11-22 15:36:03,584 INFO L78 Accepts]: Start accepts. Automaton has 98101 states and 116843 transitions. Word has length 307 [2021-11-22 15:36:03,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:36:03,585 INFO L470 AbstractCegarLoop]: Abstraction has 98101 states and 116843 transitions. [2021-11-22 15:36:03,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 15:36:03,585 INFO L276 IsEmpty]: Start isEmpty. Operand 98101 states and 116843 transitions. [2021-11-22 15:36:03,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-11-22 15:36:03,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:36:03,594 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:36:03,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:36:03,595 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:36:03,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:36:03,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2103186526, now seen corresponding path program 1 times [2021-11-22 15:36:03,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:36:03,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442171327] [2021-11-22 15:36:03,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:03,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:36:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:03,960 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-22 15:36:03,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:36:03,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442171327] [2021-11-22 15:36:03,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442171327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:36:03,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:36:03,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:36:03,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341877066] [2021-11-22 15:36:03,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:36:03,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:36:03,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:36:03,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:36:03,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:36:03,963 INFO L87 Difference]: Start difference. First operand 98101 states and 116843 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 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 15:36:07,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:07,899 INFO L93 Difference]: Finished difference Result 182032 states and 218402 transitions. [2021-11-22 15:36:07,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:36:07,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 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 322 [2021-11-22 15:36:07,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:36:08,201 INFO L225 Difference]: With dead ends: 182032 [2021-11-22 15:36:08,202 INFO L226 Difference]: Without dead ends: 98111 [2021-11-22 15:36:08,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:36:08,246 INFO L933 BasicCegarLoop]: 1020 mSDtfsCounter, 728 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 2709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:36:08,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [728 Valid, 1201 Invalid, 2709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-22 15:36:08,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98111 states. [2021-11-22 15:36:09,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98111 to 98101. [2021-11-22 15:36:09,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98101 states, 98100 states have (on average 1.1901936799184505) internal successors, (116758), 98100 states have internal predecessors, (116758), 0 states have call successors, (0), 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 15:36:09,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98101 states to 98101 states and 116758 transitions. [2021-11-22 15:36:09,966 INFO L78 Accepts]: Start accepts. Automaton has 98101 states and 116758 transitions. Word has length 322 [2021-11-22 15:36:09,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:36:09,967 INFO L470 AbstractCegarLoop]: Abstraction has 98101 states and 116758 transitions. [2021-11-22 15:36:09,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 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 15:36:09,967 INFO L276 IsEmpty]: Start isEmpty. Operand 98101 states and 116758 transitions. [2021-11-22 15:36:09,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2021-11-22 15:36:09,989 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:36:09,990 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:36:09,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 15:36:09,991 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:36:09,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:36:09,992 INFO L85 PathProgramCache]: Analyzing trace with hash 821010150, now seen corresponding path program 1 times [2021-11-22 15:36:09,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:36:09,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297851782] [2021-11-22 15:36:09,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:09,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:36:10,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:10,428 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 217 proven. 110 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-22 15:36:10,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:36:10,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297851782] [2021-11-22 15:36:10,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297851782] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:36:10,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202048344] [2021-11-22 15:36:10,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:10,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:36:10,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419610e2-115f-47ee-81a6-6d6ca0e3188a/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:36:10,435 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419610e2-115f-47ee-81a6-6d6ca0e3188a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:36:10,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419610e2-115f-47ee-81a6-6d6ca0e3188a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:36:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:10,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:36:10,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:36:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-22 15:36:11,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:36:11,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202048344] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:36:11,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:36:11,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2021-11-22 15:36:11,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704094719] [2021-11-22 15:36:11,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:36:11,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:36:11,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:36:11,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:36:11,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:36:11,217 INFO L87 Difference]: Start difference. First operand 98101 states and 116758 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 15:36:15,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:15,203 INFO L93 Difference]: Finished difference Result 194624 states and 231569 transitions. [2021-11-22 15:36:15,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:36:15,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 351 [2021-11-22 15:36:15,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:36:15,315 INFO L225 Difference]: With dead ends: 194624 [2021-11-22 15:36:15,315 INFO L226 Difference]: Without dead ends: 97312 [2021-11-22 15:36:15,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:36:15,345 INFO L933 BasicCegarLoop]: 1366 mSDtfsCounter, 1138 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2467 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 2918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:36:15,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1138 Valid, 1448 Invalid, 2918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2467 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-11-22 15:36:15,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97312 states. [2021-11-22 15:36:16,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97312 to 97311. [2021-11-22 15:36:16,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97311 states, 97310 states have (on average 1.1398931250642277) internal successors, (110923), 97310 states have internal predecessors, (110923), 0 states have call successors, (0), 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 15:36:16,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97311 states to 97311 states and 110923 transitions. [2021-11-22 15:36:16,745 INFO L78 Accepts]: Start accepts. Automaton has 97311 states and 110923 transitions. Word has length 351 [2021-11-22 15:36:16,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:36:16,746 INFO L470 AbstractCegarLoop]: Abstraction has 97311 states and 110923 transitions. [2021-11-22 15:36:16,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 15:36:16,746 INFO L276 IsEmpty]: Start isEmpty. Operand 97311 states and 110923 transitions. [2021-11-22 15:36:16,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2021-11-22 15:36:16,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:36:16,760 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:36:16,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419610e2-115f-47ee-81a6-6d6ca0e3188a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:36:16,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419610e2-115f-47ee-81a6-6d6ca0e3188a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-22 15:36:16,974 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:36:16,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:36:16,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1611430083, now seen corresponding path program 1 times [2021-11-22 15:36:16,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:36:16,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148144356] [2021-11-22 15:36:16,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:16,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:36:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:17,216 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 445 trivial. 0 not checked. [2021-11-22 15:36:17,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:36:17,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148144356] [2021-11-22 15:36:17,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148144356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:36:17,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:36:17,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:36:17,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611229460] [2021-11-22 15:36:17,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:36:17,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:36:17,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:36:17,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:36:17,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:36:17,221 INFO L87 Difference]: Start difference. First operand 97311 states and 110923 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 15:36:22,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:22,021 INFO L93 Difference]: Finished difference Result 226913 states and 257590 transitions. [2021-11-22 15:36:22,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:36:22,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 368 [2021-11-22 15:36:22,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:36:22,187 INFO L225 Difference]: With dead ends: 226913 [2021-11-22 15:36:22,187 INFO L226 Difference]: Without dead ends: 130391 [2021-11-22 15:36:22,229 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 15:36:22,230 INFO L933 BasicCegarLoop]: 1299 mSDtfsCounter, 1069 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 3190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-22 15:36:22,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1069 Valid, 1350 Invalid, 3190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-22 15:36:22,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130391 states. [2021-11-22 15:36:23,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130391 to 123277. [2021-11-22 15:36:24,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123277 states, 123276 states have (on average 1.120493851195691) internal successors, (138130), 123276 states have internal predecessors, (138130), 0 states have call successors, (0), 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 15:36:24,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123277 states to 123277 states and 138130 transitions. [2021-11-22 15:36:24,254 INFO L78 Accepts]: Start accepts. Automaton has 123277 states and 138130 transitions. Word has length 368 [2021-11-22 15:36:24,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:36:24,254 INFO L470 AbstractCegarLoop]: Abstraction has 123277 states and 138130 transitions. [2021-11-22 15:36:24,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 15:36:24,255 INFO L276 IsEmpty]: Start isEmpty. Operand 123277 states and 138130 transitions. [2021-11-22 15:36:24,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2021-11-22 15:36:24,275 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:36:24,276 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:36:24,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 15:36:24,276 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:36:24,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:36:24,277 INFO L85 PathProgramCache]: Analyzing trace with hash -173582310, now seen corresponding path program 1 times [2021-11-22 15:36:24,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:36:24,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984695289] [2021-11-22 15:36:24,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:24,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:36:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:24,551 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 446 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2021-11-22 15:36:24,552 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:36:24,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984695289] [2021-11-22 15:36:24,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984695289] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:36:24,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:36:24,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:36:24,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739734081] [2021-11-22 15:36:24,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:36:24,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:36:24,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:36:24,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:36:24,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:36:24,555 INFO L87 Difference]: Start difference. First operand 123277 states and 138130 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 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 15:36:29,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:29,522 INFO L93 Difference]: Finished difference Result 274901 states and 310706 transitions. [2021-11-22 15:36:29,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:36:29,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 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 470 [2021-11-22 15:36:29,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:36:29,703 INFO L225 Difference]: With dead ends: 274901 [2021-11-22 15:36:29,703 INFO L226 Difference]: Without dead ends: 152413 [2021-11-22 15:36:29,758 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 15:36:29,759 INFO L933 BasicCegarLoop]: 1784 mSDtfsCounter, 739 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2552 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 1938 SdHoareTripleChecker+Invalid, 3171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 2552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-22 15:36:29,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [739 Valid, 1938 Invalid, 3171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 2552 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-22 15:36:29,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152413 states. [2021-11-22 15:36:31,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152413 to 152394. [2021-11-22 15:36:31,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152394 states, 152393 states have (on average 1.1043420629556475) internal successors, (168294), 152393 states have internal predecessors, (168294), 0 states have call successors, (0), 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 15:36:32,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152394 states to 152394 states and 168294 transitions. [2021-11-22 15:36:32,375 INFO L78 Accepts]: Start accepts. Automaton has 152394 states and 168294 transitions. Word has length 470 [2021-11-22 15:36:32,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:36:32,401 INFO L470 AbstractCegarLoop]: Abstraction has 152394 states and 168294 transitions. [2021-11-22 15:36:32,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 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 15:36:32,402 INFO L276 IsEmpty]: Start isEmpty. Operand 152394 states and 168294 transitions. [2021-11-22 15:36:32,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2021-11-22 15:36:32,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:36:32,458 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:36:32,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 15:36:32,459 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:36:32,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:36:32,460 INFO L85 PathProgramCache]: Analyzing trace with hash 826766630, now seen corresponding path program 1 times [2021-11-22 15:36:32,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:36:32,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353936792] [2021-11-22 15:36:32,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:32,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:36:32,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:32,801 INFO L134 CoverageAnalysis]: Checked inductivity of 941 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2021-11-22 15:36:32,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:36:32,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353936792] [2021-11-22 15:36:32,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353936792] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:36:32,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:36:32,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:36:32,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940224352] [2021-11-22 15:36:32,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:36:32,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:36:32,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:36:32,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:36:32,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:36:32,805 INFO L87 Difference]: Start difference. First operand 152394 states and 168294 transitions. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 15:36:37,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:37,957 INFO L93 Difference]: Finished difference Result 333127 states and 370830 transitions. [2021-11-22 15:36:37,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:36:37,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 479 [2021-11-22 15:36:37,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:36:38,162 INFO L225 Difference]: With dead ends: 333127 [2021-11-22 15:36:38,162 INFO L226 Difference]: Without dead ends: 181522 [2021-11-22 15:36:38,212 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 15:36:38,213 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 924 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 2386 mSolverCounterSat, 938 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 3324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 938 IncrementalHoareTripleChecker+Valid, 2386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-22 15:36:38,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [924 Valid, 782 Invalid, 3324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [938 Valid, 2386 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-22 15:36:38,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181522 states. [2021-11-22 15:36:40,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181522 to 181501. [2021-11-22 15:36:40,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181501 states, 181500 states have (on average 1.106793388429752) internal successors, (200883), 181500 states have internal predecessors, (200883), 0 states have call successors, (0), 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 15:36:40,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181501 states to 181501 states and 200883 transitions. [2021-11-22 15:36:40,710 INFO L78 Accepts]: Start accepts. Automaton has 181501 states and 200883 transitions. Word has length 479 [2021-11-22 15:36:40,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:36:40,710 INFO L470 AbstractCegarLoop]: Abstraction has 181501 states and 200883 transitions. [2021-11-22 15:36:40,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 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 15:36:40,711 INFO L276 IsEmpty]: Start isEmpty. Operand 181501 states and 200883 transitions. [2021-11-22 15:36:40,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2021-11-22 15:36:40,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:36:40,732 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:36:40,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 15:36:40,733 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:36:40,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:36:40,734 INFO L85 PathProgramCache]: Analyzing trace with hash -14888204, now seen corresponding path program 1 times [2021-11-22 15:36:40,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:36:40,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241935911] [2021-11-22 15:36:40,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:40,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:36:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:41,713 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 374 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-11-22 15:36:41,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:36:41,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241935911] [2021-11-22 15:36:41,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241935911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:36:41,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:36:41,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:36:41,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063616875] [2021-11-22 15:36:41,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:36:41,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:36:41,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:36:41,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:36:41,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:36:41,716 INFO L87 Difference]: Start difference. First operand 181501 states and 200883 transitions. Second operand has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 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 15:36:46,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:46,834 INFO L93 Difference]: Finished difference Result 352727 states and 392352 transitions. [2021-11-22 15:36:46,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:36:46,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 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 496 [2021-11-22 15:36:46,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:36:47,090 INFO L225 Difference]: With dead ends: 352727 [2021-11-22 15:36:47,090 INFO L226 Difference]: Without dead ends: 192485 [2021-11-22 15:36:47,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 15:36:47,167 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 1186 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2264 mSolverCounterSat, 834 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 3098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 834 IncrementalHoareTripleChecker+Valid, 2264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:36:47,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1186 Valid, 386 Invalid, 3098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [834 Valid, 2264 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-22 15:36:47,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192485 states. [2021-11-22 15:36:49,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192485 to 192485. [2021-11-22 15:36:49,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192485 states, 192484 states have (on average 1.0990783649550093) internal successors, (211555), 192484 states have internal predecessors, (211555), 0 states have call successors, (0), 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 15:36:49,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192485 states to 192485 states and 211555 transitions. [2021-11-22 15:36:49,890 INFO L78 Accepts]: Start accepts. Automaton has 192485 states and 211555 transitions. Word has length 496 [2021-11-22 15:36:49,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:36:49,890 INFO L470 AbstractCegarLoop]: Abstraction has 192485 states and 211555 transitions. [2021-11-22 15:36:49,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 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 15:36:49,891 INFO L276 IsEmpty]: Start isEmpty. Operand 192485 states and 211555 transitions. [2021-11-22 15:36:49,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2021-11-22 15:36:49,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:36:49,915 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:36:49,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 15:36:49,915 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-22 15:36:49,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:36:49,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1589919666, now seen corresponding path program 1 times [2021-11-22 15:36:49,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:36:49,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110683388] [2021-11-22 15:36:49,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:49,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:36:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 316 proven. 110 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-22 15:36:50,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:36:50,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110683388] [2021-11-22 15:36:50,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110683388] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:36:50,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752793749] [2021-11-22 15:36:50,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:36:50,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:36:50,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419610e2-115f-47ee-81a6-6d6ca0e3188a/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:36:50,326 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419610e2-115f-47ee-81a6-6d6ca0e3188a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:36:50,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_419610e2-115f-47ee-81a6-6d6ca0e3188a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:36:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:36:51,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:36:51,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:36:53,380 INFO L134 CoverageAnalysis]: Checked inductivity of 463 backedges. 302 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-22 15:36:53,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:36:53,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752793749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:36:53,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:36:53,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2021-11-22 15:36:53,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878061252] [2021-11-22 15:36:53,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:36:53,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:36:53,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:36:53,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:36:53,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:36:53,384 INFO L87 Difference]: Start difference. First operand 192485 states and 211555 transitions. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 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 15:36:58,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:36:58,027 INFO L93 Difference]: Finished difference Result 370809 states and 408579 transitions. [2021-11-22 15:36:58,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:36:58,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 2 states have internal predecessors, (382), 0 states have call successors, (0), 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 541 [2021-11-22 15:36:58,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted.