./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1587dc1f-7471-4eff-acac-0fe7d5f6bd38/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1587dc1f-7471-4eff-acac-0fe7d5f6bd38/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1587dc1f-7471-4eff-acac-0fe7d5f6bd38/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1587dc1f-7471-4eff-acac-0fe7d5f6bd38/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1587dc1f-7471-4eff-acac-0fe7d5f6bd38/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1587dc1f-7471-4eff-acac-0fe7d5f6bd38/bin/uautomizer-DQz5hQGWxF --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 54f1be55645106b43145d214f59b6f833268ce7c7f84e399c536bf03a2c9679b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:29:02,543 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:29:02,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:29:02,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:29:02,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:29:02,607 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:29:02,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:29:02,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:29:02,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:29:02,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:29:02,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:29:02,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:29:02,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:29:02,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:29:02,619 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:29:02,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:29:02,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:29:02,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:29:02,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:29:02,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:29:02,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:29:02,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:29:02,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:29:02,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:29:02,637 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:29:02,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:29:02,638 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:29:02,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:29:02,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:29:02,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:29:02,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:29:02,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:29:02,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:29:02,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:29:02,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:29:02,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:29:02,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:29:02,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:29:02,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:29:02,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:29:02,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:29:02,649 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1587dc1f-7471-4eff-acac-0fe7d5f6bd38/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:29:02,676 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:29:02,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:29:02,677 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:29:02,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:29:02,678 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:29:02,678 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:29:02,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:29:02,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:29:02,683 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:29:02,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:29:02,684 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:29:02,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:29:02,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:29:02,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:29:02,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:29:02,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:29:02,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:29:02,685 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:29:02,686 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:29:02,686 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:29:02,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:29:02,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:29:02,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:29:02,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:29:02,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:29:02,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:29:02,688 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:29:02,688 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:29:02,689 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:29:02,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:29:02,689 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:29:02,689 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:29:02,690 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:29:02,690 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:29:02,690 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_1587dc1f-7471-4eff-acac-0fe7d5f6bd38/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1587dc1f-7471-4eff-acac-0fe7d5f6bd38/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 54f1be55645106b43145d214f59b6f833268ce7c7f84e399c536bf03a2c9679b [2021-11-20 06:29:02,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:29:03,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:29:03,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:29:03,006 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:29:03,006 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:29:03,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1587dc1f-7471-4eff-acac-0fe7d5f6bd38/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c [2021-11-20 06:29:03,065 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1587dc1f-7471-4eff-acac-0fe7d5f6bd38/bin/uautomizer-DQz5hQGWxF/data/f235b46cd/b4adf05ff8b44cfb8e841024a7336b67/FLAG4e3420053 [2021-11-20 06:29:04,116 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:29:04,116 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1587dc1f-7471-4eff-acac-0fe7d5f6bd38/sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c [2021-11-20 06:29:04,172 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1587dc1f-7471-4eff-acac-0fe7d5f6bd38/bin/uautomizer-DQz5hQGWxF/data/f235b46cd/b4adf05ff8b44cfb8e841024a7336b67/FLAG4e3420053 [2021-11-20 06:29:04,543 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1587dc1f-7471-4eff-acac-0fe7d5f6bd38/bin/uautomizer-DQz5hQGWxF/data/f235b46cd/b4adf05ff8b44cfb8e841024a7336b67 [2021-11-20 06:29:04,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:29:04,551 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:29:04,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:29:04,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:29:04,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:29:04,557 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:29:04" (1/1) ... [2021-11-20 06:29:04,560 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47dce978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:29:04, skipping insertion in model container [2021-11-20 06:29:04,560 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:29:04" (1/1) ... [2021-11-20 06:29:04,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:29:04,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:29:07,191 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_1587dc1f-7471-4eff-acac-0fe7d5f6bd38/sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c[381679,381692] [2021-11-20 06:29:07,216 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_1587dc1f-7471-4eff-acac-0fe7d5f6bd38/sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c[383339,383352] [2021-11-20 06:29:07,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:29:07,478 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:29:08,715 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_1587dc1f-7471-4eff-acac-0fe7d5f6bd38/sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c[381679,381692] [2021-11-20 06:29:08,719 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_1587dc1f-7471-4eff-acac-0fe7d5f6bd38/sv-benchmarks/c/combinations/Problem05_label43+token_ring.07.cil-1.c[383339,383352] [2021-11-20 06:29:08,757 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:29:08,829 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:29:08,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:29:08 WrapperNode [2021-11-20 06:29:08,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:29:08,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:29:08,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:29:08,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:29:08,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:29:08" (1/1) ... [2021-11-20 06:29:09,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:29:08" (1/1) ... [2021-11-20 06:29:09,402 INFO L137 Inliner]: procedures = 58, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12909 [2021-11-20 06:29:09,403 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:29:09,404 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:29:09,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:29:09,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:29:09,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:29:08" (1/1) ... [2021-11-20 06:29:09,413 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:29:08" (1/1) ... [2021-11-20 06:29:09,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:29:08" (1/1) ... [2021-11-20 06:29:09,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:29:08" (1/1) ... [2021-11-20 06:29:09,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:29:08" (1/1) ... [2021-11-20 06:29:09,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:29:08" (1/1) ... [2021-11-20 06:29:09,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:29:08" (1/1) ... [2021-11-20 06:29:10,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:29:10,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:29:10,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:29:10,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:29:10,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:29:08" (1/1) ... [2021-11-20 06:29:10,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:29:10,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1587dc1f-7471-4eff-acac-0fe7d5f6bd38/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:29:10,136 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1587dc1f-7471-4eff-acac-0fe7d5f6bd38/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:29:10,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1587dc1f-7471-4eff-acac-0fe7d5f6bd38/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:29:10,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:29:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-20 06:29:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-20 06:29:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-20 06:29:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-20 06:29:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-20 06:29:10,262 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-20 06:29:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-20 06:29:10,262 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-20 06:29:10,262 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-20 06:29:10,262 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-20 06:29:10,263 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-20 06:29:10,263 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-20 06:29:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:29:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:29:10,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:29:10,433 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:29:10,435 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:29:17,759 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:29:17,801 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:29:17,801 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-20 06:29:17,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:29:17 BoogieIcfgContainer [2021-11-20 06:29:17,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:29:17,808 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:29:17,808 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:29:17,811 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:29:17,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:29:04" (1/3) ... [2021-11-20 06:29:17,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e3fcca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:29:17, skipping insertion in model container [2021-11-20 06:29:17,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:29:08" (2/3) ... [2021-11-20 06:29:17,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e3fcca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:29:17, skipping insertion in model container [2021-11-20 06:29:17,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:29:17" (3/3) ... [2021-11-20 06:29:17,814 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.07.cil-1.c [2021-11-20 06:29:17,820 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:29:17,820 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 06:29:17,879 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:29:17,886 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 [2021-11-20 06:29:17,886 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 06:29:18,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-20 06:29:18,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 06:29:18,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:29:18,068 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:29:18,069 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:29:18,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:29:18,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1176565078, now seen corresponding path program 1 times [2021-11-20 06:29:18,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:29:18,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908372619] [2021-11-20 06:29:18,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:29:18,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:29:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:18,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:29:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:18,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 06:29:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:18,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:29:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:18,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 06:29:18,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:18,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 06:29:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:18,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:29:18,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:29:18,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908372619] [2021-11-20 06:29:18,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908372619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:29:18,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:29:18,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 06:29:18,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294112699] [2021-11-20 06:29:18,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:29:18,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:29:18,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:29:18,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:29:18,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:29:18,599 INFO L87 Difference]: Start difference. First operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:19,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:29:19,909 INFO L93 Difference]: Finished difference Result 4955 states and 9127 transitions. [2021-11-20 06:29:19,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:29:19,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-20 06:29:19,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:29:19,941 INFO L225 Difference]: With dead ends: 4955 [2021-11-20 06:29:19,941 INFO L226 Difference]: Without dead ends: 2460 [2021-11-20 06:29:19,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:29:19,954 INFO L933 BasicCegarLoop]: 4453 mSDtfsCounter, 653 mSDsluCounter, 12350 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 16803 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:29:19,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 16803 Invalid, 493 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 06:29:19,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-11-20 06:29:20,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2373. [2021-11-20 06:29:20,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2344 states have (on average 1.83660409556314) internal successors, (4305), 2346 states have internal predecessors, (4305), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-20 06:29:20,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 4347 transitions. [2021-11-20 06:29:20,098 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 4347 transitions. Word has length 123 [2021-11-20 06:29:20,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:29:20,099 INFO L470 AbstractCegarLoop]: Abstraction has 2373 states and 4347 transitions. [2021-11-20 06:29:20,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:20,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 4347 transitions. [2021-11-20 06:29:20,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 06:29:20,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:29:20,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:29:20,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:29:20,105 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:29:20,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:29:20,106 INFO L85 PathProgramCache]: Analyzing trace with hash 796600300, now seen corresponding path program 1 times [2021-11-20 06:29:20,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:29:20,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360152474] [2021-11-20 06:29:20,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:29:20,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:29:20,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:20,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:29:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:20,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 06:29:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:20,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:29:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:20,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 06:29:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:20,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 06:29:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:20,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:29:20,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:29:20,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360152474] [2021-11-20 06:29:20,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360152474] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:29:20,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:29:20,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:29:20,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100464472] [2021-11-20 06:29:20,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:29:20,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:29:20,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:29:20,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:29:20,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:29:20,313 INFO L87 Difference]: Start difference. First operand 2373 states and 4347 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:22,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:29:22,470 INFO L93 Difference]: Finished difference Result 3029 states and 5394 transitions. [2021-11-20 06:29:22,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:29:22,471 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-20 06:29:22,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:29:22,494 INFO L225 Difference]: With dead ends: 3029 [2021-11-20 06:29:22,495 INFO L226 Difference]: Without dead ends: 2792 [2021-11-20 06:29:22,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:29:22,503 INFO L933 BasicCegarLoop]: 4416 mSDtfsCounter, 4935 mSDsluCounter, 12550 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 16966 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:29:22,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4949 Valid, 16966 Invalid, 1334 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 06:29:22,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2792 states. [2021-11-20 06:29:22,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2792 to 2619. [2021-11-20 06:29:22,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8137904168289833) internal successors, (4656), 2570 states have internal predecessors, (4656), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2021-11-20 06:29:22,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4733 transitions. [2021-11-20 06:29:22,632 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4733 transitions. Word has length 123 [2021-11-20 06:29:22,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:29:22,633 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4733 transitions. [2021-11-20 06:29:22,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:22,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4733 transitions. [2021-11-20 06:29:22,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 06:29:22,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:29:22,647 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:29:22,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:29:22,649 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:29:22,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:29:22,649 INFO L85 PathProgramCache]: Analyzing trace with hash 71036272, now seen corresponding path program 1 times [2021-11-20 06:29:22,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:29:22,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095911324] [2021-11-20 06:29:22,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:29:22,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:29:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:22,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:29:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:22,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 06:29:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:22,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:29:22,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:22,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 06:29:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:22,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 06:29:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:22,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:29:22,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:29:22,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095911324] [2021-11-20 06:29:22,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095911324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:29:22,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:29:22,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:29:22,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593123058] [2021-11-20 06:29:22,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:29:22,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:29:22,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:29:22,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:29:22,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:29:22,891 INFO L87 Difference]: Start difference. First operand 2619 states and 4733 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:24,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:29:24,061 INFO L93 Difference]: Finished difference Result 3287 states and 5804 transitions. [2021-11-20 06:29:24,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:29:24,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-20 06:29:24,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:29:24,080 INFO L225 Difference]: With dead ends: 3287 [2021-11-20 06:29:24,081 INFO L226 Difference]: Without dead ends: 2804 [2021-11-20 06:29:24,088 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:29:24,093 INFO L933 BasicCegarLoop]: 4371 mSDtfsCounter, 4771 mSDsluCounter, 12358 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4786 SdHoareTripleChecker+Valid, 16729 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:29:24,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4786 Valid, 16729 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 06:29:24,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2021-11-20 06:29:24,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 2619. [2021-11-20 06:29:24,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8130112972341255) internal successors, (4654), 2570 states have internal predecessors, (4654), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2021-11-20 06:29:24,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4731 transitions. [2021-11-20 06:29:24,211 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4731 transitions. Word has length 123 [2021-11-20 06:29:24,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:29:24,211 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4731 transitions. [2021-11-20 06:29:24,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:24,212 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4731 transitions. [2021-11-20 06:29:24,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 06:29:24,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:29:24,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:29:24,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:29:24,215 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:29:24,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:29:24,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1460330286, now seen corresponding path program 1 times [2021-11-20 06:29:24,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:29:24,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469761745] [2021-11-20 06:29:24,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:29:24,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:29:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:24,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:29:24,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:24,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 06:29:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:24,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:29:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:24,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 06:29:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:24,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 06:29:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:29:24,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:29:24,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469761745] [2021-11-20 06:29:24,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469761745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:29:24,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:29:24,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:29:24,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563107003] [2021-11-20 06:29:24,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:29:24,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:29:24,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:29:24,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:29:24,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:29:24,379 INFO L87 Difference]: Start difference. First operand 2619 states and 4731 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:26,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:29:26,916 INFO L93 Difference]: Finished difference Result 3613 states and 6309 transitions. [2021-11-20 06:29:26,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:29:26,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-20 06:29:26,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:29:26,939 INFO L225 Difference]: With dead ends: 3613 [2021-11-20 06:29:26,939 INFO L226 Difference]: Without dead ends: 3130 [2021-11-20 06:29:26,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:29:26,944 INFO L933 BasicCegarLoop]: 4601 mSDtfsCounter, 4935 mSDsluCounter, 17116 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4949 SdHoareTripleChecker+Valid, 21717 SdHoareTripleChecker+Invalid, 1998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:29:26,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4949 Valid, 21717 Invalid, 1998 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 06:29:26,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3130 states. [2021-11-20 06:29:27,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3130 to 2848. [2021-11-20 06:29:27,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2773 states have (on average 1.7922827262892174) internal successors, (4970), 2777 states have internal predecessors, (4970), 53 states have call successors, (53), 18 states have call predecessors, (53), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2021-11-20 06:29:27,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 5081 transitions. [2021-11-20 06:29:27,092 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 5081 transitions. Word has length 123 [2021-11-20 06:29:27,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:29:27,092 INFO L470 AbstractCegarLoop]: Abstraction has 2848 states and 5081 transitions. [2021-11-20 06:29:27,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:27,093 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 5081 transitions. [2021-11-20 06:29:27,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 06:29:27,096 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:29:27,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:29:27,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:29:27,097 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:29:27,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:29:27,097 INFO L85 PathProgramCache]: Analyzing trace with hash -573063760, now seen corresponding path program 1 times [2021-11-20 06:29:27,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:29:27,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512765161] [2021-11-20 06:29:27,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:29:27,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:29:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:27,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:29:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:27,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 06:29:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:27,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:29:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:27,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 06:29:27,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:27,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 06:29:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:27,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:29:27,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:29:27,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512765161] [2021-11-20 06:29:27,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512765161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:29:27,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:29:27,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:29:27,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209355390] [2021-11-20 06:29:27,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:29:27,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:29:27,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:29:27,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:29:27,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:29:27,234 INFO L87 Difference]: Start difference. First operand 2848 states and 5081 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:29,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:29:29,745 INFO L93 Difference]: Finished difference Result 4476 states and 7659 transitions. [2021-11-20 06:29:29,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:29:29,746 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-20 06:29:29,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:29:29,769 INFO L225 Difference]: With dead ends: 4476 [2021-11-20 06:29:29,770 INFO L226 Difference]: Without dead ends: 3764 [2021-11-20 06:29:29,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:29:29,774 INFO L933 BasicCegarLoop]: 4593 mSDtfsCounter, 4932 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4946 SdHoareTripleChecker+Valid, 21705 SdHoareTripleChecker+Invalid, 1999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:29:29,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4946 Valid, 21705 Invalid, 1999 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 06:29:29,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3764 states. [2021-11-20 06:29:29,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3764 to 3308. [2021-11-20 06:29:29,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3308 states, 3187 states have (on average 1.7587072481957955) internal successors, (5605), 3193 states have internal predecessors, (5605), 85 states have call successors, (85), 30 states have call predecessors, (85), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2021-11-20 06:29:29,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3308 states to 3308 states and 5788 transitions. [2021-11-20 06:29:29,919 INFO L78 Accepts]: Start accepts. Automaton has 3308 states and 5788 transitions. Word has length 123 [2021-11-20 06:29:29,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:29:29,920 INFO L470 AbstractCegarLoop]: Abstraction has 3308 states and 5788 transitions. [2021-11-20 06:29:29,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:29,920 INFO L276 IsEmpty]: Start isEmpty. Operand 3308 states and 5788 transitions. [2021-11-20 06:29:29,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 06:29:29,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:29:29,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:29:29,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:29:29,923 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:29:29,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:29:29,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1855194862, now seen corresponding path program 1 times [2021-11-20 06:29:29,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:29:29,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803184554] [2021-11-20 06:29:29,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:29:29,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:29:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:29,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:29:29,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:29,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 06:29:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:30,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:29:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:30,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 06:29:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:30,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 06:29:30,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:30,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:29:30,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:29:30,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803184554] [2021-11-20 06:29:30,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803184554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:29:30,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:29:30,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:29:30,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603005522] [2021-11-20 06:29:30,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:29:30,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:29:30,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:29:30,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:29:30,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:29:30,048 INFO L87 Difference]: Start difference. First operand 3308 states and 5788 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:32,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:29:32,300 INFO L93 Difference]: Finished difference Result 6142 states and 10254 transitions. [2021-11-20 06:29:32,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 06:29:32,301 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-20 06:29:32,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:29:32,336 INFO L225 Difference]: With dead ends: 6142 [2021-11-20 06:29:32,336 INFO L226 Difference]: Without dead ends: 4970 [2021-11-20 06:29:32,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:29:32,346 INFO L933 BasicCegarLoop]: 4589 mSDtfsCounter, 4928 mSDsluCounter, 17112 mSDsCounter, 0 mSdLazyCounter, 1926 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4942 SdHoareTripleChecker+Valid, 21701 SdHoareTripleChecker+Invalid, 1994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:29:32,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4942 Valid, 21701 Invalid, 1994 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [68 Valid, 1926 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 06:29:32,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4970 states. [2021-11-20 06:29:32,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4970 to 4230. [2021-11-20 06:29:32,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4017 states have (on average 1.7119741100323624) internal successors, (6877), 4027 states have internal predecessors, (6877), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-11-20 06:29:32,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 7210 transitions. [2021-11-20 06:29:32,590 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 7210 transitions. Word has length 123 [2021-11-20 06:29:32,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:29:32,591 INFO L470 AbstractCegarLoop]: Abstraction has 4230 states and 7210 transitions. [2021-11-20 06:29:32,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:32,592 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 7210 transitions. [2021-11-20 06:29:32,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 06:29:32,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:29:32,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:29:32,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 06:29:32,596 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:29:32,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:29:32,597 INFO L85 PathProgramCache]: Analyzing trace with hash 548052464, now seen corresponding path program 1 times [2021-11-20 06:29:32,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:29:32,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612461815] [2021-11-20 06:29:32,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:29:32,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:29:32,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:32,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:29:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:32,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 06:29:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:32,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:29:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:32,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 06:29:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:32,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 06:29:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:29:32,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:29:32,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612461815] [2021-11-20 06:29:32,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612461815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:29:32,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:29:32,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:29:32,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233646945] [2021-11-20 06:29:32,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:29:32,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:29:32,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:29:32,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:29:32,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:29:32,736 INFO L87 Difference]: Start difference. First operand 4230 states and 7210 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:33,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:29:33,958 INFO L93 Difference]: Finished difference Result 7076 states and 11725 transitions. [2021-11-20 06:29:33,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:29:33,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-20 06:29:33,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:29:34,007 INFO L225 Difference]: With dead ends: 7076 [2021-11-20 06:29:34,008 INFO L226 Difference]: Without dead ends: 4982 [2021-11-20 06:29:34,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:29:34,019 INFO L933 BasicCegarLoop]: 4354 mSDtfsCounter, 4774 mSDsluCounter, 12357 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4789 SdHoareTripleChecker+Valid, 16711 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:29:34,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4789 Valid, 16711 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 06:29:34,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4982 states. [2021-11-20 06:29:34,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4982 to 4230. [2021-11-20 06:29:34,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4017 states have (on average 1.709733632063729) internal successors, (6868), 4027 states have internal predecessors, (6868), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-11-20 06:29:34,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 7201 transitions. [2021-11-20 06:29:34,244 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 7201 transitions. Word has length 123 [2021-11-20 06:29:34,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:29:34,245 INFO L470 AbstractCegarLoop]: Abstraction has 4230 states and 7201 transitions. [2021-11-20 06:29:34,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:34,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 7201 transitions. [2021-11-20 06:29:34,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 06:29:34,249 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:29:34,249 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:29:34,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:29:34,249 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:29:34,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:29:34,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1849418066, now seen corresponding path program 1 times [2021-11-20 06:29:34,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:29:34,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859384563] [2021-11-20 06:29:34,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:29:34,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:29:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:34,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:29:34,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:34,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 06:29:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:34,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:29:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:34,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 06:29:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:34,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 06:29:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:29:34,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:29:34,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859384563] [2021-11-20 06:29:34,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859384563] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:29:34,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:29:34,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:29:34,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455066571] [2021-11-20 06:29:34,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:29:34,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:29:34,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:29:34,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:29:34,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:29:34,391 INFO L87 Difference]: Start difference. First operand 4230 states and 7201 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:35,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:29:35,587 INFO L93 Difference]: Finished difference Result 7056 states and 11659 transitions. [2021-11-20 06:29:35,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:29:35,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-20 06:29:35,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:29:35,605 INFO L225 Difference]: With dead ends: 7056 [2021-11-20 06:29:35,606 INFO L226 Difference]: Without dead ends: 4962 [2021-11-20 06:29:35,614 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:29:35,615 INFO L933 BasicCegarLoop]: 4348 mSDtfsCounter, 4664 mSDsluCounter, 16444 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4679 SdHoareTripleChecker+Valid, 20792 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:29:35,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4679 Valid, 20792 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-20 06:29:35,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4962 states. [2021-11-20 06:29:35,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4962 to 4230. [2021-11-20 06:29:35,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4230 states, 4017 states have (on average 1.707493154095096) internal successors, (6859), 4027 states have internal predecessors, (6859), 149 states have call successors, (149), 54 states have call predecessors, (149), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2021-11-20 06:29:35,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 7192 transitions. [2021-11-20 06:29:35,832 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 7192 transitions. Word has length 123 [2021-11-20 06:29:35,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:29:35,833 INFO L470 AbstractCegarLoop]: Abstraction has 4230 states and 7192 transitions. [2021-11-20 06:29:35,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:35,833 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 7192 transitions. [2021-11-20 06:29:35,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 06:29:35,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:29:35,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:29:35,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:29:35,838 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:29:35,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:29:35,843 INFO L85 PathProgramCache]: Analyzing trace with hash 539145964, now seen corresponding path program 1 times [2021-11-20 06:29:35,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:29:35,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291935743] [2021-11-20 06:29:35,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:29:35,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:29:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:35,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:29:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:35,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 06:29:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:35,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:29:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:35,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 06:29:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:35,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 06:29:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:35,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:29:35,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:29:35,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291935743] [2021-11-20 06:29:35,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291935743] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:29:35,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:29:35,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:29:35,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909820521] [2021-11-20 06:29:35,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:29:35,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:29:35,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:29:35,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:29:35,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:29:35,994 INFO L87 Difference]: Start difference. First operand 4230 states and 7192 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:38,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:29:38,515 INFO L93 Difference]: Finished difference Result 10300 states and 16616 transitions. [2021-11-20 06:29:38,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:29:38,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-20 06:29:38,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:29:38,544 INFO L225 Difference]: With dead ends: 10300 [2021-11-20 06:29:38,544 INFO L226 Difference]: Without dead ends: 8206 [2021-11-20 06:29:38,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:29:38,554 INFO L933 BasicCegarLoop]: 4565 mSDtfsCounter, 5202 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5224 SdHoareTripleChecker+Valid, 21669 SdHoareTripleChecker+Invalid, 1936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:29:38,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5224 Valid, 21669 Invalid, 1936 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 06:29:38,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8206 states. [2021-11-20 06:29:38,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8206 to 6082. [2021-11-20 06:29:38,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6082 states, 5693 states have (on average 1.6539610047426665) internal successors, (9416), 5711 states have internal predecessors, (9416), 269 states have call successors, (269), 102 states have call predecessors, (269), 118 states have return successors, (366), 284 states have call predecessors, (366), 269 states have call successors, (366) [2021-11-20 06:29:38,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6082 states to 6082 states and 10051 transitions. [2021-11-20 06:29:38,915 INFO L78 Accepts]: Start accepts. Automaton has 6082 states and 10051 transitions. Word has length 123 [2021-11-20 06:29:38,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:29:38,915 INFO L470 AbstractCegarLoop]: Abstraction has 6082 states and 10051 transitions. [2021-11-20 06:29:38,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:38,916 INFO L276 IsEmpty]: Start isEmpty. Operand 6082 states and 10051 transitions. [2021-11-20 06:29:38,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 06:29:38,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:29:38,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:29:38,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 06:29:38,924 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:29:38,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:29:38,928 INFO L85 PathProgramCache]: Analyzing trace with hash 2140217070, now seen corresponding path program 1 times [2021-11-20 06:29:38,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:29:38,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276266576] [2021-11-20 06:29:38,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:29:38,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:29:38,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:38,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:29:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:38,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 06:29:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:39,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:29:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:39,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 06:29:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:39,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 06:29:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:39,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:29:39,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:29:39,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276266576] [2021-11-20 06:29:39,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276266576] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:29:39,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:29:39,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:29:39,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425916150] [2021-11-20 06:29:39,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:29:39,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:29:39,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:29:39,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:29:39,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:29:39,064 INFO L87 Difference]: Start difference. First operand 6082 states and 10051 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:42,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:29:42,191 INFO L93 Difference]: Finished difference Result 17558 states and 27899 transitions. [2021-11-20 06:29:42,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:29:42,192 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-20 06:29:42,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:29:42,236 INFO L225 Difference]: With dead ends: 17558 [2021-11-20 06:29:42,236 INFO L226 Difference]: Without dead ends: 13612 [2021-11-20 06:29:42,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:29:42,254 INFO L933 BasicCegarLoop]: 4667 mSDtfsCounter, 4972 mSDsluCounter, 17101 mSDsCounter, 0 mSdLazyCounter, 2174 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4985 SdHoareTripleChecker+Valid, 21768 SdHoareTripleChecker+Invalid, 2248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:29:42,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4985 Valid, 21768 Invalid, 2248 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 2174 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-20 06:29:42,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13612 states. [2021-11-20 06:29:42,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13612 to 9691. [2021-11-20 06:29:42,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9691 states, 8958 states have (on average 1.6070551462379996) internal successors, (14396), 8992 states have internal predecessors, (14396), 501 states have call successors, (501), 198 states have call predecessors, (501), 230 states have return successors, (776), 532 states have call predecessors, (776), 501 states have call successors, (776) [2021-11-20 06:29:42,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9691 states to 9691 states and 15673 transitions. [2021-11-20 06:29:42,928 INFO L78 Accepts]: Start accepts. Automaton has 9691 states and 15673 transitions. Word has length 123 [2021-11-20 06:29:42,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:29:42,929 INFO L470 AbstractCegarLoop]: Abstraction has 9691 states and 15673 transitions. [2021-11-20 06:29:42,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:42,929 INFO L276 IsEmpty]: Start isEmpty. Operand 9691 states and 15673 transitions. [2021-11-20 06:29:42,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 06:29:42,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:29:42,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:29:42,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 06:29:42,939 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:29:42,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:29:42,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1083485868, now seen corresponding path program 1 times [2021-11-20 06:29:42,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:29:42,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415620435] [2021-11-20 06:29:42,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:29:42,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:29:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:42,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:29:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:43,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 06:29:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:43,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:29:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:43,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 06:29:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:43,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 06:29:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:43,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:29:43,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:29:43,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415620435] [2021-11-20 06:29:43,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415620435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:29:43,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:29:43,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:29:43,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671957805] [2021-11-20 06:29:43,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:29:43,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:29:43,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:29:43,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:29:43,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:29:43,089 INFO L87 Difference]: Start difference. First operand 9691 states and 15673 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:46,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:29:46,835 INFO L93 Difference]: Finished difference Result 31533 states and 49799 transitions. [2021-11-20 06:29:46,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:29:46,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-20 06:29:46,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:29:47,045 INFO L225 Difference]: With dead ends: 31533 [2021-11-20 06:29:47,045 INFO L226 Difference]: Without dead ends: 23978 [2021-11-20 06:29:47,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:29:47,072 INFO L933 BasicCegarLoop]: 4555 mSDtfsCounter, 5122 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 1843 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5144 SdHoareTripleChecker+Valid, 21659 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:29:47,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5144 Valid, 21659 Invalid, 1920 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 1843 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-20 06:29:47,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23978 states. [2021-11-20 06:29:48,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23978 to 16972. [2021-11-20 06:29:48,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16972 states, 15567 states have (on average 1.5737136249759105) internal successors, (24498), 15633 states have internal predecessors, (24498), 949 states have call successors, (949), 390 states have call predecessors, (949), 454 states have return successors, (1742), 1012 states have call predecessors, (1742), 949 states have call successors, (1742) [2021-11-20 06:29:48,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16972 states to 16972 states and 27189 transitions. [2021-11-20 06:29:48,232 INFO L78 Accepts]: Start accepts. Automaton has 16972 states and 27189 transitions. Word has length 123 [2021-11-20 06:29:48,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:29:48,233 INFO L470 AbstractCegarLoop]: Abstraction has 16972 states and 27189 transitions. [2021-11-20 06:29:48,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:48,233 INFO L276 IsEmpty]: Start isEmpty. Operand 16972 states and 27189 transitions. [2021-11-20 06:29:48,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 06:29:48,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:29:48,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:29:48,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 06:29:48,247 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:29:48,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:29:48,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1860096210, now seen corresponding path program 1 times [2021-11-20 06:29:48,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:29:48,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535335283] [2021-11-20 06:29:48,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:29:48,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:29:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:48,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:29:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:48,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 06:29:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:48,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:29:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:48,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 06:29:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:48,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 06:29:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:48,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:29:48,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:29:48,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535335283] [2021-11-20 06:29:48,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535335283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:29:48,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:29:48,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:29:48,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92483757] [2021-11-20 06:29:48,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:29:48,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:29:48,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:29:48,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:29:48,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:29:48,369 INFO L87 Difference]: Start difference. First operand 16972 states and 27189 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:53,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:29:53,393 INFO L93 Difference]: Finished difference Result 59100 states and 93657 transitions. [2021-11-20 06:29:53,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:29:53,394 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-20 06:29:53,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:29:53,541 INFO L225 Difference]: With dead ends: 59100 [2021-11-20 06:29:53,542 INFO L226 Difference]: Without dead ends: 44264 [2021-11-20 06:29:53,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:29:53,600 INFO L933 BasicCegarLoop]: 4550 mSDtfsCounter, 5082 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 1835 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5104 SdHoareTripleChecker+Valid, 21654 SdHoareTripleChecker+Invalid, 1912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:29:53,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5104 Valid, 21654 Invalid, 1912 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [77 Valid, 1835 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 06:29:53,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44264 states. [2021-11-20 06:29:56,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44264 to 31501. [2021-11-20 06:29:56,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31501 states, 28784 states have (on average 1.5540578098943858) internal successors, (44732), 28914 states have internal predecessors, (44732), 1813 states have call successors, (1813), 774 states have call predecessors, (1813), 902 states have return successors, (4128), 1940 states have call predecessors, (4128), 1813 states have call successors, (4128) [2021-11-20 06:29:56,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31501 states to 31501 states and 50673 transitions. [2021-11-20 06:29:56,132 INFO L78 Accepts]: Start accepts. Automaton has 31501 states and 50673 transitions. Word has length 123 [2021-11-20 06:29:56,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:29:56,132 INFO L470 AbstractCegarLoop]: Abstraction has 31501 states and 50673 transitions. [2021-11-20 06:29:56,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:29:56,133 INFO L276 IsEmpty]: Start isEmpty. Operand 31501 states and 50673 transitions. [2021-11-20 06:29:56,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 06:29:56,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:29:56,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:29:56,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 06:29:56,158 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:29:56,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:29:56,158 INFO L85 PathProgramCache]: Analyzing trace with hash 815896172, now seen corresponding path program 1 times [2021-11-20 06:29:56,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:29:56,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911017366] [2021-11-20 06:29:56,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:29:56,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:29:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:56,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:29:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:56,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 06:29:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:56,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:29:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:56,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 06:29:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:56,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 06:29:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:29:56,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:29:56,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:29:56,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911017366] [2021-11-20 06:29:56,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911017366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:29:56,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:29:56,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:29:56,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681606979] [2021-11-20 06:29:56,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:29:56,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:29:56,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:29:56,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:29:56,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:29:56,270 INFO L87 Difference]: Start difference. First operand 31501 states and 50673 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:30:04,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:30:04,565 INFO L93 Difference]: Finished difference Result 113051 states and 181431 transitions. [2021-11-20 06:30:04,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 06:30:04,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-20 06:30:04,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:30:04,768 INFO L225 Difference]: With dead ends: 113051 [2021-11-20 06:30:04,768 INFO L226 Difference]: Without dead ends: 83686 [2021-11-20 06:30:04,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:30:04,835 INFO L933 BasicCegarLoop]: 4605 mSDtfsCounter, 4940 mSDsluCounter, 17104 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4953 SdHoareTripleChecker+Valid, 21709 SdHoareTripleChecker+Invalid, 2120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 06:30:04,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4953 Valid, 21709 Invalid, 2120 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 2046 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-20 06:30:04,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83686 states. [2021-11-20 06:30:10,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83686 to 60494. [2021-11-20 06:30:10,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60494 states, 55217 states have (on average 1.5441259032544326) internal successors, (85262), 55475 states have internal predecessors, (85262), 3477 states have call successors, (3477), 1542 states have call predecessors, (3477), 1798 states have return successors, (10294), 3732 states have call predecessors, (10294), 3477 states have call successors, (10294) [2021-11-20 06:30:10,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60494 states to 60494 states and 99033 transitions. [2021-11-20 06:30:10,401 INFO L78 Accepts]: Start accepts. Automaton has 60494 states and 99033 transitions. Word has length 123 [2021-11-20 06:30:10,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:30:10,401 INFO L470 AbstractCegarLoop]: Abstraction has 60494 states and 99033 transitions. [2021-11-20 06:30:10,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:30:10,401 INFO L276 IsEmpty]: Start isEmpty. Operand 60494 states and 99033 transitions. [2021-11-20 06:30:10,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 06:30:10,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:30:10,440 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:30:10,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 06:30:10,441 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:30:10,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:30:10,441 INFO L85 PathProgramCache]: Analyzing trace with hash -67612818, now seen corresponding path program 1 times [2021-11-20 06:30:10,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:30:10,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211233901] [2021-11-20 06:30:10,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:30:10,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:30:10,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:30:10,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:30:10,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:30:10,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 06:30:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:30:10,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:30:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:30:10,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 06:30:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:30:10,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 06:30:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:30:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:30:10,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:30:10,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211233901] [2021-11-20 06:30:10,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211233901] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:30:10,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:30:10,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:30:10,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624827639] [2021-11-20 06:30:10,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:30:10,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:30:10,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:30:10,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:30:10,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:30:10,582 INFO L87 Difference]: Start difference. First operand 60494 states and 99033 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:30:17,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:30:17,120 INFO L93 Difference]: Finished difference Result 135108 states and 225560 transitions. [2021-11-20 06:30:17,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:30:17,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2021-11-20 06:30:17,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:30:17,337 INFO L225 Difference]: With dead ends: 135108 [2021-11-20 06:30:17,337 INFO L226 Difference]: Without dead ends: 76750 [2021-11-20 06:30:17,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:30:17,427 INFO L933 BasicCegarLoop]: 4327 mSDtfsCounter, 4774 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4789 SdHoareTripleChecker+Valid, 16682 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:30:17,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4789 Valid, 16682 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 06:30:17,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76750 states. [2021-11-20 06:30:22,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76750 to 60494. [2021-11-20 06:30:22,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60494 states, 55217 states have (on average 1.5394715395620915) internal successors, (85005), 55475 states have internal predecessors, (85005), 3477 states have call successors, (3477), 1542 states have call predecessors, (3477), 1798 states have return successors, (10294), 3732 states have call predecessors, (10294), 3477 states have call successors, (10294) [2021-11-20 06:30:22,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60494 states to 60494 states and 98776 transitions. [2021-11-20 06:30:22,726 INFO L78 Accepts]: Start accepts. Automaton has 60494 states and 98776 transitions. Word has length 123 [2021-11-20 06:30:22,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:30:22,726 INFO L470 AbstractCegarLoop]: Abstraction has 60494 states and 98776 transitions. [2021-11-20 06:30:22,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 06:30:22,727 INFO L276 IsEmpty]: Start isEmpty. Operand 60494 states and 98776 transitions. [2021-11-20 06:30:22,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-20 06:30:22,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:30:22,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:30:22,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 06:30:22,772 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:30:22,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:30:22,772 INFO L85 PathProgramCache]: Analyzing trace with hash -96113108, now seen corresponding path program 1 times [2021-11-20 06:30:22,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:30:22,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935722738] [2021-11-20 06:30:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:30:22,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:30:22,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:30:22,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 06:30:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:30:22,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-20 06:30:22,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:30:22,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:30:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:30:22,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 06:30:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:30:22,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 06:30:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:30:22,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:30:22,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:30:22,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935722738] [2021-11-20 06:30:22,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935722738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:30:22,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:30:22,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:30:22,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010478872] [2021-11-20 06:30:22,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:30:22,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:30:22,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:30:22,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:30:22,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:30:22,903 INFO L87 Difference]: Start difference. First operand 60494 states and 98776 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)