./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem13_label10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem13_label10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R --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 70e3fa314440413ee6566d40ce0ee11aff48ac01f98d0bf277ed2b1e7bf71005 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:18:58,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:18:58,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:18:58,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:18:58,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:18:58,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:18:58,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:18:58,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:18:58,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:18:58,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:18:58,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:18:58,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:18:58,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:18:58,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:18:58,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:18:58,532 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:18:58,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:18:58,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:18:58,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:18:58,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:18:58,547 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:18:58,549 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:18:58,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:18:58,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:18:58,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:18:58,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:18:58,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:18:58,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:18:58,566 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:18:58,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:18:58,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:18:58,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:18:58,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:18:58,574 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:18:58,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:18:58,575 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:18:58,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:18:58,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:18:58,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:18:58,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:18:58,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:18:58,579 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:18:58,603 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:18:58,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:18:58,604 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:18:58,604 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:18:58,605 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:18:58,605 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:18:58,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:18:58,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:18:58,606 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:18:58,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:18:58,607 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:18:58,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:18:58,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:18:58,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:18:58,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:18:58,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:18:58,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:18:58,609 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:18:58,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:18:58,609 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:18:58,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:18:58,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:18:58,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:18:58,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:18:58,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:18:58,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:18:58,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:18:58,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:18:58,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:18:58,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:18:58,612 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:18:58,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:18:58,612 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:18:58,613 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:18:58,613 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70e3fa314440413ee6566d40ce0ee11aff48ac01f98d0bf277ed2b1e7bf71005 [2022-11-25 18:18:58,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:18:58,960 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:18:58,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:18:58,964 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:18:58,965 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:18:58,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/eca-rers2012/Problem13_label10.c [2022-11-25 18:19:02,209 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:19:02,897 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:19:02,898 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/sv-benchmarks/c/eca-rers2012/Problem13_label10.c [2022-11-25 18:19:02,942 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/data/4ea7f160a/e3be7ea4adb74600bd3ca3b9e6e2ff06/FLAGd3598fce9 [2022-11-25 18:19:02,960 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/data/4ea7f160a/e3be7ea4adb74600bd3ca3b9e6e2ff06 [2022-11-25 18:19:02,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:19:02,967 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:19:02,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:19:02,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:19:02,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:19:02,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:19:02" (1/1) ... [2022-11-25 18:19:02,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29b2fdb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:02, skipping insertion in model container [2022-11-25 18:19:02,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:19:02" (1/1) ... [2022-11-25 18:19:02,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:19:03,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:19:03,477 WARN L237 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_f526e82d-9be0-4afb-b072-d56be9faa007/sv-benchmarks/c/eca-rers2012/Problem13_label10.c[6726,6739] [2022-11-25 18:19:04,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:19:04,879 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:19:04,928 WARN L237 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_f526e82d-9be0-4afb-b072-d56be9faa007/sv-benchmarks/c/eca-rers2012/Problem13_label10.c[6726,6739] [2022-11-25 18:19:05,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:19:05,725 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:19:05,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:05 WrapperNode [2022-11-25 18:19:05,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:19:05,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:19:05,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:19:05,728 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:19:05,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:05" (1/1) ... [2022-11-25 18:19:05,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:05" (1/1) ... [2022-11-25 18:19:06,743 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 5583 [2022-11-25 18:19:06,744 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:19:06,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:19:06,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:19:06,746 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:19:06,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:05" (1/1) ... [2022-11-25 18:19:06,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:05" (1/1) ... [2022-11-25 18:19:07,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:05" (1/1) ... [2022-11-25 18:19:07,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:05" (1/1) ... [2022-11-25 18:19:07,541 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:05" (1/1) ... [2022-11-25 18:19:07,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:05" (1/1) ... [2022-11-25 18:19:07,733 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:05" (1/1) ... [2022-11-25 18:19:07,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:05" (1/1) ... [2022-11-25 18:19:07,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:19:07,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:19:07,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:19:07,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:19:07,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:05" (1/1) ... [2022-11-25 18:19:07,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:19:07,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:19:07,892 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:19:07,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:19:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:19:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:19:07,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:19:07,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:19:08,085 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:19:08,088 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:19:15,826 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:19:15,870 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:19:15,870 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 18:19:15,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:19:15 BoogieIcfgContainer [2022-11-25 18:19:15,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:19:15,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:19:15,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:19:15,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:19:15,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:19:02" (1/3) ... [2022-11-25 18:19:15,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5390ae48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:19:15, skipping insertion in model container [2022-11-25 18:19:15,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:19:05" (2/3) ... [2022-11-25 18:19:15,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5390ae48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:19:15, skipping insertion in model container [2022-11-25 18:19:15,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:19:15" (3/3) ... [2022-11-25 18:19:15,887 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label10.c [2022-11-25 18:19:15,910 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:19:15,911 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:19:16,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:19:16,019 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1166c6c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:19:16,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:19:16,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:19:16,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-25 18:19:16,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:19:16,038 INFO L195 NwaCegarLoop]: 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] [2022-11-25 18:19:16,039 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:19:16,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:19:16,045 INFO L85 PathProgramCache]: Analyzing trace with hash 433832817, now seen corresponding path program 1 times [2022-11-25 18:19:16,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:19:16,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953208785] [2022-11-25 18:19:16,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:19:16,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:19:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:16,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:19:16,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:19:16,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953208785] [2022-11-25 18:19:16,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953208785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:19:16,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:19:16,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:19:16,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017885059] [2022-11-25 18:19:16,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:19:16,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:19:16,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:19:16,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:19:16,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:19:16,651 INFO L87 Difference]: Start difference. First operand has 1098 states, 1096 states have (on average 1.8275547445255473) internal successors, (2003), 1097 states have internal predecessors, (2003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:19:23,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:19:23,514 INFO L93 Difference]: Finished difference Result 3035 states and 5643 transitions. [2022-11-25 18:19:23,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:19:23,517 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-11-25 18:19:23,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:19:23,547 INFO L225 Difference]: With dead ends: 3035 [2022-11-25 18:19:23,548 INFO L226 Difference]: Without dead ends: 1873 [2022-11-25 18:19:23,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:19:23,560 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 858 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 858 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 3363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 858 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-25 18:19:23,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 1145 Invalid, 3363 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [858 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-25 18:19:23,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2022-11-25 18:19:23,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1859. [2022-11-25 18:19:23,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1859 states, 1858 states have (on average 1.5441334768568353) internal successors, (2869), 1858 states have internal predecessors, (2869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:19:23,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1859 states to 1859 states and 2869 transitions. [2022-11-25 18:19:23,714 INFO L78 Accepts]: Start accepts. Automaton has 1859 states and 2869 transitions. Word has length 47 [2022-11-25 18:19:23,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:19:23,715 INFO L495 AbstractCegarLoop]: Abstraction has 1859 states and 2869 transitions. [2022-11-25 18:19:23,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:19:23,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1859 states and 2869 transitions. [2022-11-25 18:19:23,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-25 18:19:23,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:19:23,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:19:23,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:19:23,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:19:23,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:19:23,723 INFO L85 PathProgramCache]: Analyzing trace with hash 494461477, now seen corresponding path program 1 times [2022-11-25 18:19:23,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:19:23,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010273605] [2022-11-25 18:19:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:19:23,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:19:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:19:24,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:19:24,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010273605] [2022-11-25 18:19:24,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010273605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:19:24,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:19:24,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:19:24,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178256590] [2022-11-25 18:19:24,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:19:24,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:19:24,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:19:24,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:19:24,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:19:24,187 INFO L87 Difference]: Start difference. First operand 1859 states and 2869 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:19:30,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:19:30,744 INFO L93 Difference]: Finished difference Result 5317 states and 8229 transitions. [2022-11-25 18:19:30,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:19:30,746 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2022-11-25 18:19:30,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:19:30,764 INFO L225 Difference]: With dead ends: 5317 [2022-11-25 18:19:30,764 INFO L226 Difference]: Without dead ends: 3460 [2022-11-25 18:19:30,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:19:30,780 INFO L413 NwaCegarLoop]: 1039 mSDtfsCounter, 826 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 3279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:19:30,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1192 Invalid, 3279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-25 18:19:30,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3460 states. [2022-11-25 18:19:30,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3460 to 3459. [2022-11-25 18:19:30,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3459 states, 3458 states have (on average 1.3805668016194332) internal successors, (4774), 3458 states have internal predecessors, (4774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:19:30,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3459 states to 3459 states and 4774 transitions. [2022-11-25 18:19:30,909 INFO L78 Accepts]: Start accepts. Automaton has 3459 states and 4774 transitions. Word has length 119 [2022-11-25 18:19:30,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:19:30,911 INFO L495 AbstractCegarLoop]: Abstraction has 3459 states and 4774 transitions. [2022-11-25 18:19:30,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 2 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:19:30,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3459 states and 4774 transitions. [2022-11-25 18:19:30,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-25 18:19:30,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:19:30,930 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:19:30,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:19:30,932 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:19:30,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:19:30,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1890693106, now seen corresponding path program 1 times [2022-11-25 18:19:30,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:19:30,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413756995] [2022-11-25 18:19:30,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:19:30,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:19:31,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:19:31,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:19:31,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413756995] [2022-11-25 18:19:31,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413756995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:19:31,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:19:31,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:19:31,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587358814] [2022-11-25 18:19:31,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:19:31,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:19:31,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:19:31,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:19:31,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:19:31,855 INFO L87 Difference]: Start difference. First operand 3459 states and 4774 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:19:40,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:19:40,327 INFO L93 Difference]: Finished difference Result 10870 states and 14768 transitions. [2022-11-25 18:19:40,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:19:40,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-11-25 18:19:40,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:19:40,358 INFO L225 Difference]: With dead ends: 10870 [2022-11-25 18:19:40,359 INFO L226 Difference]: Without dead ends: 7413 [2022-11-25 18:19:40,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:19:40,368 INFO L413 NwaCegarLoop]: 709 mSDtfsCounter, 2582 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 4117 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2582 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 4948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 4117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:19:40,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2582 Valid, 1003 Invalid, 4948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 4117 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-25 18:19:40,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7413 states. [2022-11-25 18:19:40,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7413 to 7412. [2022-11-25 18:19:40,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7412 states, 7411 states have (on average 1.2698691134799622) internal successors, (9411), 7411 states have internal predecessors, (9411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:19:40,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7412 states to 7412 states and 9411 transitions. [2022-11-25 18:19:40,549 INFO L78 Accepts]: Start accepts. Automaton has 7412 states and 9411 transitions. Word has length 133 [2022-11-25 18:19:40,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:19:40,550 INFO L495 AbstractCegarLoop]: Abstraction has 7412 states and 9411 transitions. [2022-11-25 18:19:40,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 3 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:19:40,551 INFO L276 IsEmpty]: Start isEmpty. Operand 7412 states and 9411 transitions. [2022-11-25 18:19:40,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-11-25 18:19:40,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:19:40,557 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:19:40,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:19:40,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:19:40,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:19:40,562 INFO L85 PathProgramCache]: Analyzing trace with hash 154744987, now seen corresponding path program 1 times [2022-11-25 18:19:40,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:19:40,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862763829] [2022-11-25 18:19:40,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:19:40,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:19:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:41,060 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-11-25 18:19:41,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:19:41,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862763829] [2022-11-25 18:19:41,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862763829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:19:41,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:19:41,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:19:41,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606451202] [2022-11-25 18:19:41,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:19:41,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:19:41,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:19:41,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:19:41,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:19:41,066 INFO L87 Difference]: Start difference. First operand 7412 states and 9411 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:19:47,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:19:47,343 INFO L93 Difference]: Finished difference Result 20355 states and 26251 transitions. [2022-11-25 18:19:47,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:19:47,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 214 [2022-11-25 18:19:47,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:19:47,405 INFO L225 Difference]: With dead ends: 20355 [2022-11-25 18:19:47,405 INFO L226 Difference]: Without dead ends: 13732 [2022-11-25 18:19:47,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:19:47,419 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 888 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2575 mSolverCounterSat, 748 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 748 IncrementalHoareTripleChecker+Valid, 2575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:19:47,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 978 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [748 Valid, 2575 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-25 18:19:47,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13732 states. [2022-11-25 18:19:47,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13732 to 12937. [2022-11-25 18:19:47,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12937 states, 12936 states have (on average 1.215213358070501) internal successors, (15720), 12936 states have internal predecessors, (15720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:19:47,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12937 states to 12937 states and 15720 transitions. [2022-11-25 18:19:47,835 INFO L78 Accepts]: Start accepts. Automaton has 12937 states and 15720 transitions. Word has length 214 [2022-11-25 18:19:47,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:19:47,837 INFO L495 AbstractCegarLoop]: Abstraction has 12937 states and 15720 transitions. [2022-11-25 18:19:47,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:19:47,839 INFO L276 IsEmpty]: Start isEmpty. Operand 12937 states and 15720 transitions. [2022-11-25 18:19:47,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2022-11-25 18:19:47,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:19:47,845 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:19:47,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:19:47,846 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:19:47,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:19:47,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1296879125, now seen corresponding path program 1 times [2022-11-25 18:19:47,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:19:47,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121920001] [2022-11-25 18:19:47,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:19:47,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:19:47,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:48,302 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:19:48,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:19:48,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121920001] [2022-11-25 18:19:48,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121920001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:19:48,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:19:48,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:19:48,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569291276] [2022-11-25 18:19:48,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:19:48,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:19:48,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:19:48,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:19:48,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:19:48,310 INFO L87 Difference]: Start difference. First operand 12937 states and 15720 transitions. Second operand has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:19:54,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:19:54,407 INFO L93 Difference]: Finished difference Result 31392 states and 39119 transitions. [2022-11-25 18:19:54,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:19:54,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2022-11-25 18:19:54,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:19:54,458 INFO L225 Difference]: With dead ends: 31392 [2022-11-25 18:19:54,458 INFO L226 Difference]: Without dead ends: 19244 [2022-11-25 18:19:54,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:19:54,472 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 858 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 3295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-25 18:19:54,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 926 Invalid, 3295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [914 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-25 18:19:54,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19244 states. [2022-11-25 18:19:54,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19244 to 18447. [2022-11-25 18:19:54,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18447 states, 18446 states have (on average 1.2024287108316165) internal successors, (22180), 18446 states have internal predecessors, (22180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:19:54,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18447 states to 18447 states and 22180 transitions. [2022-11-25 18:19:54,818 INFO L78 Accepts]: Start accepts. Automaton has 18447 states and 22180 transitions. Word has length 246 [2022-11-25 18:19:54,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:19:54,820 INFO L495 AbstractCegarLoop]: Abstraction has 18447 states and 22180 transitions. [2022-11-25 18:19:54,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:19:54,825 INFO L276 IsEmpty]: Start isEmpty. Operand 18447 states and 22180 transitions. [2022-11-25 18:19:54,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2022-11-25 18:19:54,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:19:54,837 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:19:54,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:19:54,838 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:19:54,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:19:54,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1687890830, now seen corresponding path program 1 times [2022-11-25 18:19:54,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:19:54,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612914436] [2022-11-25 18:19:54,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:19:54,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:19:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:19:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-25 18:19:55,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:19:55,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612914436] [2022-11-25 18:19:55,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612914436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:19:55,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:19:55,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:19:55,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499991564] [2022-11-25 18:19:55,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:19:55,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:19:55,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:19:55,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:19:55,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:19:55,309 INFO L87 Difference]: Start difference. First operand 18447 states and 22180 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:01,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:20:01,778 INFO L93 Difference]: Finished difference Result 42412 states and 52037 transitions. [2022-11-25 18:20:01,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:20:01,780 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 335 [2022-11-25 18:20:01,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:20:01,835 INFO L225 Difference]: With dead ends: 42412 [2022-11-25 18:20:01,835 INFO L226 Difference]: Without dead ends: 24754 [2022-11-25 18:20:01,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:20:01,853 INFO L413 NwaCegarLoop]: 1796 mSDtfsCounter, 823 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2542 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 3265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 2542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:20:01,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1947 Invalid, 3265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 2542 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-25 18:20:01,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24754 states. [2022-11-25 18:20:02,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24754 to 23962. [2022-11-25 18:20:02,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23962 states, 23961 states have (on average 1.1787070656483452) internal successors, (28243), 23961 states have internal predecessors, (28243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:02,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23962 states to 23962 states and 28243 transitions. [2022-11-25 18:20:02,504 INFO L78 Accepts]: Start accepts. Automaton has 23962 states and 28243 transitions. Word has length 335 [2022-11-25 18:20:02,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:20:02,505 INFO L495 AbstractCegarLoop]: Abstraction has 23962 states and 28243 transitions. [2022-11-25 18:20:02,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:02,505 INFO L276 IsEmpty]: Start isEmpty. Operand 23962 states and 28243 transitions. [2022-11-25 18:20:02,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-25 18:20:02,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:20:02,515 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:20:02,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:20:02,516 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:20:02,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:02,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1979168850, now seen corresponding path program 1 times [2022-11-25 18:20:02,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:20:02,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462462442] [2022-11-25 18:20:02,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:02,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:20:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 379 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:20:03,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:20:03,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462462442] [2022-11-25 18:20:03,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462462442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:03,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:03,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:20:03,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274102430] [2022-11-25 18:20:03,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:03,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:20:03,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:20:03,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:20:03,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:20:03,316 INFO L87 Difference]: Start difference. First operand 23962 states and 28243 transitions. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:15,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:20:15,138 INFO L93 Difference]: Finished difference Result 89064 states and 105284 transitions. [2022-11-25 18:20:15,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:20:15,139 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-25 18:20:15,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:20:15,274 INFO L225 Difference]: With dead ends: 89064 [2022-11-25 18:20:15,274 INFO L226 Difference]: Without dead ends: 65891 [2022-11-25 18:20:15,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:20:15,308 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 1744 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 6025 mSolverCounterSat, 1213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 7238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1213 IncrementalHoareTripleChecker+Valid, 6025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:20:15,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1744 Valid, 638 Invalid, 7238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1213 Valid, 6025 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2022-11-25 18:20:15,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65891 states. [2022-11-25 18:20:16,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65891 to 64976. [2022-11-25 18:20:16,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64976 states, 64975 states have (on average 1.154567141208157) internal successors, (75018), 64975 states have internal predecessors, (75018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:16,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64976 states to 64976 states and 75018 transitions. [2022-11-25 18:20:16,539 INFO L78 Accepts]: Start accepts. Automaton has 64976 states and 75018 transitions. Word has length 344 [2022-11-25 18:20:16,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:20:16,541 INFO L495 AbstractCegarLoop]: Abstraction has 64976 states and 75018 transitions. [2022-11-25 18:20:16,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:16,541 INFO L276 IsEmpty]: Start isEmpty. Operand 64976 states and 75018 transitions. [2022-11-25 18:20:16,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2022-11-25 18:20:16,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:20:16,814 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:20:16,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:20:16,814 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:20:16,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:16,815 INFO L85 PathProgramCache]: Analyzing trace with hash -481772957, now seen corresponding path program 1 times [2022-11-25 18:20:16,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:20:16,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918490095] [2022-11-25 18:20:16,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:16,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:20:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-25 18:20:17,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:20:17,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918490095] [2022-11-25 18:20:17,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918490095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:17,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:17,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:20:17,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811120622] [2022-11-25 18:20:17,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:17,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:20:17,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:20:17,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:20:17,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:20:17,830 INFO L87 Difference]: Start difference. First operand 64976 states and 75018 transitions. Second operand has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:24,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:20:24,195 INFO L93 Difference]: Finished difference Result 142564 states and 164034 transitions. [2022-11-25 18:20:24,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:20:24,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 344 [2022-11-25 18:20:24,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:20:24,314 INFO L225 Difference]: With dead ends: 142564 [2022-11-25 18:20:24,314 INFO L226 Difference]: Without dead ends: 78377 [2022-11-25 18:20:24,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:20:24,341 INFO L413 NwaCegarLoop]: 1018 mSDtfsCounter, 728 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 2704 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 2885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-25 18:20:24,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 1198 Invalid, 2885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 2704 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-25 18:20:24,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78377 states. [2022-11-25 18:20:25,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78377 to 77581. [2022-11-25 18:20:25,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77581 states, 77580 states have (on average 1.1385924207269915) internal successors, (88332), 77580 states have internal predecessors, (88332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:26,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77581 states to 77581 states and 88332 transitions. [2022-11-25 18:20:26,052 INFO L78 Accepts]: Start accepts. Automaton has 77581 states and 88332 transitions. Word has length 344 [2022-11-25 18:20:26,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:20:26,053 INFO L495 AbstractCegarLoop]: Abstraction has 77581 states and 88332 transitions. [2022-11-25 18:20:26,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.66666666666667) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:26,054 INFO L276 IsEmpty]: Start isEmpty. Operand 77581 states and 88332 transitions. [2022-11-25 18:20:26,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2022-11-25 18:20:26,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:20:26,065 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:20:26,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:20:26,066 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:20:26,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:26,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1384889835, now seen corresponding path program 1 times [2022-11-25 18:20:26,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:20:26,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238413283] [2022-11-25 18:20:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:26,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:20:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:28,906 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 258 proven. 113 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:20:28,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:20:28,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238413283] [2022-11-25 18:20:28,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238413283] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:20:28,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490931522] [2022-11-25 18:20:28,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:28,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:20:28,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:20:28,914 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:20:28,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:20:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:29,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 18:20:29,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:20:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-11-25 18:20:29,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:20:29,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490931522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:29,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:20:29,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-25 18:20:29,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422623842] [2022-11-25 18:20:29,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:29,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:20:29,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:20:29,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:20:29,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:20:29,525 INFO L87 Difference]: Start difference. First operand 77581 states and 88332 transitions. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:35,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:20:35,318 INFO L93 Difference]: Finished difference Result 154371 states and 175869 transitions. [2022-11-25 18:20:35,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:20:35,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 373 [2022-11-25 18:20:35,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:20:35,442 INFO L225 Difference]: With dead ends: 154371 [2022-11-25 18:20:35,443 INFO L226 Difference]: Without dead ends: 77579 [2022-11-25 18:20:35,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:20:35,486 INFO L413 NwaCegarLoop]: 1362 mSDtfsCounter, 1122 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:20:35,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 1443 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-25 18:20:35,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77579 states. [2022-11-25 18:20:36,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77579 to 76791. [2022-11-25 18:20:36,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76791 states, 76790 states have (on average 1.1075400442765986) internal successors, (85048), 76790 states have internal predecessors, (85048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:36,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76791 states to 76791 states and 85048 transitions. [2022-11-25 18:20:36,874 INFO L78 Accepts]: Start accepts. Automaton has 76791 states and 85048 transitions. Word has length 373 [2022-11-25 18:20:36,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:20:36,875 INFO L495 AbstractCegarLoop]: Abstraction has 76791 states and 85048 transitions. [2022-11-25 18:20:36,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:36,876 INFO L276 IsEmpty]: Start isEmpty. Operand 76791 states and 85048 transitions. [2022-11-25 18:20:36,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2022-11-25 18:20:36,886 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:20:36,887 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:20:36,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:20:37,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:20:37,094 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:20:37,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:37,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1355556298, now seen corresponding path program 1 times [2022-11-25 18:20:37,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:20:37,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184096545] [2022-11-25 18:20:37,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:37,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:20:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:37,558 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 508 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-25 18:20:37,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:20:37,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184096545] [2022-11-25 18:20:37,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184096545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:37,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:37,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:20:37,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859297646] [2022-11-25 18:20:37,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:37,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:20:37,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:20:37,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:20:37,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:20:37,562 INFO L87 Difference]: Start difference. First operand 76791 states and 85048 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:44,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:20:44,406 INFO L93 Difference]: Finished difference Result 171691 states and 192206 transitions. [2022-11-25 18:20:44,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:20:44,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 403 [2022-11-25 18:20:44,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:20:44,550 INFO L225 Difference]: With dead ends: 171691 [2022-11-25 18:20:44,551 INFO L226 Difference]: Without dead ends: 95689 [2022-11-25 18:20:44,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:20:44,597 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 905 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 2415 mSolverCounterSat, 944 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 3359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 944 IncrementalHoareTripleChecker+Valid, 2415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:20:44,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 907 Invalid, 3359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [944 Valid, 2415 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-25 18:20:44,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95689 states. [2022-11-25 18:20:46,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95689 to 95671. [2022-11-25 18:20:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95671 states, 95670 states have (on average 1.1136301871014946) internal successors, (106541), 95670 states have internal predecessors, (106541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:46,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95671 states to 95671 states and 106541 transitions. [2022-11-25 18:20:46,424 INFO L78 Accepts]: Start accepts. Automaton has 95671 states and 106541 transitions. Word has length 403 [2022-11-25 18:20:46,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:20:46,425 INFO L495 AbstractCegarLoop]: Abstraction has 95671 states and 106541 transitions. [2022-11-25 18:20:46,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:46,425 INFO L276 IsEmpty]: Start isEmpty. Operand 95671 states and 106541 transitions. [2022-11-25 18:20:46,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2022-11-25 18:20:46,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:20:46,436 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:20:46,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:20:46,437 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:20:46,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:46,438 INFO L85 PathProgramCache]: Analyzing trace with hash -748426392, now seen corresponding path program 1 times [2022-11-25 18:20:46,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:20:46,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165621616] [2022-11-25 18:20:46,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:46,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:20:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:46,984 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 319 trivial. 0 not checked. [2022-11-25 18:20:46,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:20:46,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165621616] [2022-11-25 18:20:46,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165621616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:46,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:46,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:20:46,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156602523] [2022-11-25 18:20:46,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:46,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:20:46,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:20:46,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:20:46,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:20:46,987 INFO L87 Difference]: Start difference. First operand 95671 states and 106541 transitions. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:55,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:20:55,411 INFO L93 Difference]: Finished difference Result 218186 states and 244116 transitions. [2022-11-25 18:20:55,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:20:55,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 436 [2022-11-25 18:20:55,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:20:55,545 INFO L225 Difference]: With dead ends: 218186 [2022-11-25 18:20:55,545 INFO L226 Difference]: Without dead ends: 123304 [2022-11-25 18:20:55,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:20:55,593 INFO L413 NwaCegarLoop]: 1753 mSDtfsCounter, 843 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 3124 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 3616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 3124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-25 18:20:55,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 1888 Invalid, 3616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 3124 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-25 18:20:55,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123304 states. [2022-11-25 18:20:57,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123304 to 121683. [2022-11-25 18:20:57,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121683 states, 121682 states have (on average 1.1083068983087063) internal successors, (134861), 121682 states have internal predecessors, (134861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:57,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121683 states to 121683 states and 134861 transitions. [2022-11-25 18:20:57,710 INFO L78 Accepts]: Start accepts. Automaton has 121683 states and 134861 transitions. Word has length 436 [2022-11-25 18:20:57,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:20:57,711 INFO L495 AbstractCegarLoop]: Abstraction has 121683 states and 134861 transitions. [2022-11-25 18:20:57,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:20:57,712 INFO L276 IsEmpty]: Start isEmpty. Operand 121683 states and 134861 transitions. [2022-11-25 18:20:57,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2022-11-25 18:20:57,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:20:57,723 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:20:57,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:20:57,723 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:20:57,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:20:57,723 INFO L85 PathProgramCache]: Analyzing trace with hash -593722075, now seen corresponding path program 1 times [2022-11-25 18:20:57,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:20:57,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510103853] [2022-11-25 18:20:57,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:20:57,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:20:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:20:58,124 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 406 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2022-11-25 18:20:58,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:20:58,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510103853] [2022-11-25 18:20:58,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510103853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:20:58,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:20:58,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:20:58,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610859475] [2022-11-25 18:20:58,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:20:58,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:20:58,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:20:58,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:20:58,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:20:58,129 INFO L87 Difference]: Start difference. First operand 121683 states and 134861 transitions. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:05,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:21:05,294 INFO L93 Difference]: Finished difference Result 241804 states and 268111 transitions. [2022-11-25 18:21:05,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:21:05,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 441 [2022-11-25 18:21:05,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:21:05,433 INFO L225 Difference]: With dead ends: 241804 [2022-11-25 18:21:05,434 INFO L226 Difference]: Without dead ends: 120910 [2022-11-25 18:21:05,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:21:05,475 INFO L413 NwaCegarLoop]: 1717 mSDtfsCounter, 793 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1868 SdHoareTripleChecker+Invalid, 3186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-25 18:21:05,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 1868 Invalid, 3186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-25 18:21:05,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120910 states. [2022-11-25 18:21:07,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120910 to 118525. [2022-11-25 18:21:07,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118525 states, 118524 states have (on average 1.0782541932435625) internal successors, (127799), 118524 states have internal predecessors, (127799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:07,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118525 states to 118525 states and 127799 transitions. [2022-11-25 18:21:07,843 INFO L78 Accepts]: Start accepts. Automaton has 118525 states and 127799 transitions. Word has length 441 [2022-11-25 18:21:07,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:21:07,844 INFO L495 AbstractCegarLoop]: Abstraction has 118525 states and 127799 transitions. [2022-11-25 18:21:07,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:07,844 INFO L276 IsEmpty]: Start isEmpty. Operand 118525 states and 127799 transitions. [2022-11-25 18:21:07,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2022-11-25 18:21:07,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:21:07,851 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:21:07,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 18:21:07,852 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:21:07,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:21:07,853 INFO L85 PathProgramCache]: Analyzing trace with hash 460083043, now seen corresponding path program 1 times [2022-11-25 18:21:07,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:21:07,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421345884] [2022-11-25 18:21:07,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:21:07,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:21:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:21:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-25 18:21:08,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:21:08,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421345884] [2022-11-25 18:21:08,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421345884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:21:08,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:21:08,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:21:08,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406266044] [2022-11-25 18:21:08,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:21:08,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:21:08,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:21:08,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:21:08,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:21:08,482 INFO L87 Difference]: Start difference. First operand 118525 states and 127799 transitions. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:16,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:21:16,978 INFO L93 Difference]: Finished difference Result 290713 states and 314522 transitions. [2022-11-25 18:21:16,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:21:16,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 451 [2022-11-25 18:21:16,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:21:17,173 INFO L225 Difference]: With dead ends: 290713 [2022-11-25 18:21:17,174 INFO L226 Difference]: Without dead ends: 172977 [2022-11-25 18:21:17,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:21:17,225 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 970 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 3106 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 3750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 3106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:21:17,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 659 Invalid, 3750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 3106 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-25 18:21:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172977 states. [2022-11-25 18:21:19,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172977 to 170511. [2022-11-25 18:21:19,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170511 states, 170510 states have (on average 1.0827400152483726) internal successors, (184618), 170510 states have internal predecessors, (184618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:19,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170511 states to 170511 states and 184618 transitions. [2022-11-25 18:21:19,927 INFO L78 Accepts]: Start accepts. Automaton has 170511 states and 184618 transitions. Word has length 451 [2022-11-25 18:21:19,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:21:19,927 INFO L495 AbstractCegarLoop]: Abstraction has 170511 states and 184618 transitions. [2022-11-25 18:21:19,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:19,928 INFO L276 IsEmpty]: Start isEmpty. Operand 170511 states and 184618 transitions. [2022-11-25 18:21:19,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2022-11-25 18:21:19,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:21:19,937 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:21:19,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 18:21:19,937 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:21:19,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:21:19,938 INFO L85 PathProgramCache]: Analyzing trace with hash 993117357, now seen corresponding path program 1 times [2022-11-25 18:21:19,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:21:19,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691805325] [2022-11-25 18:21:19,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:21:19,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:21:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:21:22,093 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 330 proven. 110 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 18:21:22,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:21:22,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691805325] [2022-11-25 18:21:22,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691805325] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:21:22,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004858642] [2022-11-25 18:21:22,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:21:22,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:21:22,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:21:22,103 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:21:22,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:21:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:21:22,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:21:22,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:21:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 327 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-11-25 18:21:22,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:21:22,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004858642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:21:22,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:21:22,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-11-25 18:21:22,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302827642] [2022-11-25 18:21:22,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:21:22,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:21:22,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:21:22,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:21:22,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:21:22,769 INFO L87 Difference]: Start difference. First operand 170511 states and 184618 transitions. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:30,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:21:30,858 INFO L93 Difference]: Finished difference Result 381139 states and 414497 transitions. [2022-11-25 18:21:30,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:21:30,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 463 [2022-11-25 18:21:30,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:21:31,234 INFO L225 Difference]: With dead ends: 381139 [2022-11-25 18:21:31,235 INFO L226 Difference]: Without dead ends: 226377 [2022-11-25 18:21:31,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:21:31,323 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 934 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 2657 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 3415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 2657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:21:31,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 1761 Invalid, 3415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 2657 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-25 18:21:31,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226377 states. [2022-11-25 18:21:34,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226377 to 210626. [2022-11-25 18:21:34,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210626 states, 210625 states have (on average 1.0756985163204749) internal successors, (226569), 210625 states have internal predecessors, (226569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:35,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210626 states to 210626 states and 226569 transitions. [2022-11-25 18:21:35,160 INFO L78 Accepts]: Start accepts. Automaton has 210626 states and 226569 transitions. Word has length 463 [2022-11-25 18:21:35,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:21:35,161 INFO L495 AbstractCegarLoop]: Abstraction has 210626 states and 226569 transitions. [2022-11-25 18:21:35,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:21:35,162 INFO L276 IsEmpty]: Start isEmpty. Operand 210626 states and 226569 transitions. [2022-11-25 18:21:35,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2022-11-25 18:21:35,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:21:35,180 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:21:35,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:21:35,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f526e82d-9be0-4afb-b072-d56be9faa007/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 18:21:35,388 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:21:35,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:21:35,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1076884108, now seen corresponding path program 1 times [2022-11-25 18:21:35,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:21:35,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198182587] [2022-11-25 18:21:35,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:21:35,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:21:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat