./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem19_label24.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_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/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_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem19_label24.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/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_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/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 e1ea7efa1a6f5e3c8e81d21cb48d3f8215c9331802f3340a04165a0f6109c81b --- 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 17:40:58,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:40:58,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:40:58,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:40:58,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:40:58,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:40:58,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:40:58,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:40:58,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:40:58,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:40:58,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:40:58,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:40:58,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:40:58,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:40:58,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:40:58,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:40:58,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:40:58,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:40:58,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:40:58,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:40:58,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:40:58,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:40:58,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:40:58,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:40:58,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:40:58,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:40:58,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:40:58,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:40:58,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:40:58,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:40:58,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:40:58,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:40:58,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:40:58,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:40:58,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:40:58,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:40:58,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:40:58,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:40:58,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:40:58,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:40:58,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:40:58,738 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:40:58,773 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:40:58,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:40:58,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:40:58,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:40:58,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:40:58,777 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:40:58,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:40:58,778 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:40:58,778 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:40:58,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:40:58,779 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:40:58,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:40:58,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:40:58,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:40:58,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:40:58,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:40:58,781 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:40:58,781 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:40:58,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:40:58,782 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:40:58,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:40:58,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:40:58,783 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:40:58,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:40:58,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:40:58,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:40:58,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:40:58,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:40:58,785 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:40:58,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:40:58,785 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:40:58,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:40:58,786 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:40:58,786 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:40:58,786 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_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1ea7efa1a6f5e3c8e81d21cb48d3f8215c9331802f3340a04165a0f6109c81b [2022-11-25 17:40:59,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:40:59,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:40:59,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:40:59,161 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:40:59,162 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:40:59,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/eca-rers2012/Problem19_label24.c [2022-11-25 17:41:02,205 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:41:02,966 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:41:02,966 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/sv-benchmarks/c/eca-rers2012/Problem19_label24.c [2022-11-25 17:41:03,014 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/data/265b61bb8/f5f72b9879774d89bff208fb22b1c215/FLAG24a4a7516 [2022-11-25 17:41:03,329 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/data/265b61bb8/f5f72b9879774d89bff208fb22b1c215 [2022-11-25 17:41:03,332 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:41:03,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:41:03,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:41:03,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:41:03,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:41:03,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:41:03" (1/1) ... [2022-11-25 17:41:03,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21b37e4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:41:03, skipping insertion in model container [2022-11-25 17:41:03,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:41:03" (1/1) ... [2022-11-25 17:41:03,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:41:03,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:41:04,047 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_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/sv-benchmarks/c/eca-rers2012/Problem19_label24.c[6032,6045] [2022-11-25 17:41:05,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:41:05,879 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:41:05,918 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_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/sv-benchmarks/c/eca-rers2012/Problem19_label24.c[6032,6045] [2022-11-25 17:41:07,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:41:07,073 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:41:07,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:41:07 WrapperNode [2022-11-25 17:41:07,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:41:07,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:41:07,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:41:07,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:41:07,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:41:07" (1/1) ... [2022-11-25 17:41:07,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:41:07" (1/1) ... [2022-11-25 17:41:08,000 INFO L138 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-11-25 17:41:08,001 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:41:08,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:41:08,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:41:08,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:41:08,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:41:07" (1/1) ... [2022-11-25 17:41:08,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:41:07" (1/1) ... [2022-11-25 17:41:08,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:41:07" (1/1) ... [2022-11-25 17:41:08,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:41:07" (1/1) ... [2022-11-25 17:41:08,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:41:07" (1/1) ... [2022-11-25 17:41:08,740 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:41:07" (1/1) ... [2022-11-25 17:41:08,837 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:41:07" (1/1) ... [2022-11-25 17:41:08,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:41:07" (1/1) ... [2022-11-25 17:41:09,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:41:09,042 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:41:09,042 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:41:09,042 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:41:09,043 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:41:07" (1/1) ... [2022-11-25 17:41:09,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:41:09,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:41:09,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:41:09,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:41:09,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:41:09,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:41:09,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:41:09,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:41:09,215 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:41:09,217 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:41:19,684 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:41:19,705 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:41:19,705 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:41:19,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:41:19 BoogieIcfgContainer [2022-11-25 17:41:19,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:41:19,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:41:19,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:41:19,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:41:19,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:41:03" (1/3) ... [2022-11-25 17:41:19,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7660ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:41:19, skipping insertion in model container [2022-11-25 17:41:19,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:41:07" (2/3) ... [2022-11-25 17:41:19,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7660ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:41:19, skipping insertion in model container [2022-11-25 17:41:19,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:41:19" (3/3) ... [2022-11-25 17:41:19,719 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label24.c [2022-11-25 17:41:19,739 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:41:19,739 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:41:19,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:41:19,860 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;@3e4a854a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:41:19,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:41:19,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 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 17:41:19,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-25 17:41:19,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:41:19,882 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] [2022-11-25 17:41:19,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:41:19,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:41:19,888 INFO L85 PathProgramCache]: Analyzing trace with hash -2068820151, now seen corresponding path program 1 times [2022-11-25 17:41:19,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:41:19,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688345581] [2022-11-25 17:41:19,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:41:19,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:41:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:41:20,457 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 17:41:20,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:41:20,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688345581] [2022-11-25 17:41:20,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688345581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:41:20,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:41:20,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:41:20,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433444195] [2022-11-25 17:41:20,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:41:20,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:41:20,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:41:20,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:41:20,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:41:20,503 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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 17:41:37,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:41:37,116 INFO L93 Difference]: Finished difference Result 6288 states and 12045 transitions. [2022-11-25 17:41:37,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:41:37,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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 45 [2022-11-25 17:41:37,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:41:37,162 INFO L225 Difference]: With dead ends: 6288 [2022-11-25 17:41:37,163 INFO L226 Difference]: Without dead ends: 4471 [2022-11-25 17:41:37,171 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 17:41:37,175 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 4594 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 7124 mSolverCounterSat, 3649 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4594 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 10773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3649 IncrementalHoareTripleChecker+Valid, 7124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:41:37,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4594 Valid, 1011 Invalid, 10773 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3649 Valid, 7124 Invalid, 0 Unknown, 0 Unchecked, 16.1s Time] [2022-11-25 17:41:37,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4471 states. [2022-11-25 17:41:37,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4471 to 4467. [2022-11-25 17:41:37,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4467 states, 4466 states have (on average 1.5665024630541873) internal successors, (6996), 4466 states have internal predecessors, (6996), 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 17:41:37,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4467 states to 4467 states and 6996 transitions. [2022-11-25 17:41:37,420 INFO L78 Accepts]: Start accepts. Automaton has 4467 states and 6996 transitions. Word has length 45 [2022-11-25 17:41:37,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:41:37,421 INFO L495 AbstractCegarLoop]: Abstraction has 4467 states and 6996 transitions. [2022-11-25 17:41:37,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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 17:41:37,422 INFO L276 IsEmpty]: Start isEmpty. Operand 4467 states and 6996 transitions. [2022-11-25 17:41:37,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-11-25 17:41:37,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:41:37,434 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, 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] [2022-11-25 17:41:37,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:41:37,435 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:41:37,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:41:37,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1526841922, now seen corresponding path program 1 times [2022-11-25 17:41:37,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:41:37,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846533295] [2022-11-25 17:41:37,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:41:37,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:41:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:41:39,235 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-25 17:41:39,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:41:39,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846533295] [2022-11-25 17:41:39,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846533295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:41:39,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:41:39,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:41:39,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323603288] [2022-11-25 17:41:39,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:41:39,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:41:39,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:41:39,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:41:39,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:41:39,245 INFO L87 Difference]: Start difference. First operand 4467 states and 6996 transitions. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 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 17:41:54,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:41:54,016 INFO L93 Difference]: Finished difference Result 11710 states and 20221 transitions. [2022-11-25 17:41:54,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:41:54,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 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 319 [2022-11-25 17:41:54,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:41:54,048 INFO L225 Difference]: With dead ends: 11710 [2022-11-25 17:41:54,048 INFO L226 Difference]: Without dead ends: 8610 [2022-11-25 17:41:54,053 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 17:41:54,054 INFO L413 NwaCegarLoop]: 1801 mSDtfsCounter, 3756 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9445 mSolverCounterSat, 1331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3756 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 10776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1331 IncrementalHoareTripleChecker+Valid, 9445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:41:54,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3756 Valid, 2155 Invalid, 10776 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1331 Valid, 9445 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time] [2022-11-25 17:41:54,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8610 states. [2022-11-25 17:41:54,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8610 to 8596. [2022-11-25 17:41:54,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8596 states, 8595 states have (on average 1.348458406050029) internal successors, (11590), 8595 states have internal predecessors, (11590), 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 17:41:54,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 11590 transitions. [2022-11-25 17:41:54,237 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 11590 transitions. Word has length 319 [2022-11-25 17:41:54,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:41:54,238 INFO L495 AbstractCegarLoop]: Abstraction has 8596 states and 11590 transitions. [2022-11-25 17:41:54,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 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 17:41:54,239 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 11590 transitions. [2022-11-25 17:41:54,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-11-25 17:41:54,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:41:54,246 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, 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] [2022-11-25 17:41:54,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:41:54,246 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:41:54,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:41:54,247 INFO L85 PathProgramCache]: Analyzing trace with hash -353847652, now seen corresponding path program 1 times [2022-11-25 17:41:54,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:41:54,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993709551] [2022-11-25 17:41:54,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:41:54,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:41:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:41:55,144 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 17:41:55,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:41:55,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993709551] [2022-11-25 17:41:55,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993709551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:41:55,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:41:55,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:41:55,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11350603] [2022-11-25 17:41:55,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:41:55,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:41:55,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:41:55,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:41:55,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:41:55,151 INFO L87 Difference]: Start difference. First operand 8596 states and 11590 transitions. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 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 17:42:05,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:05,023 INFO L93 Difference]: Finished difference Result 14491 states and 20461 transitions. [2022-11-25 17:42:05,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:42:05,024 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 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 347 [2022-11-25 17:42:05,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:05,055 INFO L225 Difference]: With dead ends: 14491 [2022-11-25 17:42:05,055 INFO L226 Difference]: Without dead ends: 8596 [2022-11-25 17:42:05,065 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 17:42:05,066 INFO L413 NwaCegarLoop]: 1773 mSDtfsCounter, 1138 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7321 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1138 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 7329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:05,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1138 Valid, 2115 Invalid, 7329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7321 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-11-25 17:42:05,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8596 states. [2022-11-25 17:42:05,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8596 to 8596. [2022-11-25 17:42:05,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8596 states, 8595 states have (on average 1.3469458987783596) internal successors, (11577), 8595 states have internal predecessors, (11577), 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 17:42:05,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 11577 transitions. [2022-11-25 17:42:05,257 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 11577 transitions. Word has length 347 [2022-11-25 17:42:05,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:05,259 INFO L495 AbstractCegarLoop]: Abstraction has 8596 states and 11577 transitions. [2022-11-25 17:42:05,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 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 17:42:05,260 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 11577 transitions. [2022-11-25 17:42:05,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2022-11-25 17:42:05,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:05,275 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:42:05,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:42:05,276 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:05,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:05,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1876814997, now seen corresponding path program 1 times [2022-11-25 17:42:05,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:05,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065394665] [2022-11-25 17:42:05,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:05,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:06,649 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 107 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:42:06,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:06,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065394665] [2022-11-25 17:42:06,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065394665] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:42:06,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722521946] [2022-11-25 17:42:06,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:06,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:06,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:06,658 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:06,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:42:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:06,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:42:06,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:07,186 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:42:07,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:42:07,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722521946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:07,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:42:07,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-25 17:42:07,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564973311] [2022-11-25 17:42:07,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:07,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:42:07,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:07,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:42:07,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:42:07,194 INFO L87 Difference]: Start difference. First operand 8596 states and 11577 transitions. Second operand has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 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 17:42:15,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:15,656 INFO L93 Difference]: Finished difference Result 19935 states and 28708 transitions. [2022-11-25 17:42:15,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:42:15,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 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 599 [2022-11-25 17:42:15,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:15,702 INFO L225 Difference]: With dead ends: 19935 [2022-11-25 17:42:15,702 INFO L226 Difference]: Without dead ends: 14071 [2022-11-25 17:42:15,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 598 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:42:15,712 INFO L413 NwaCegarLoop]: 1371 mSDtfsCounter, 1730 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 3864 mSolverCounterSat, 1728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 5592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1728 IncrementalHoareTripleChecker+Valid, 3864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:15,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 1508 Invalid, 5592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1728 Valid, 3864 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-25 17:42:15,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14071 states. [2022-11-25 17:42:15,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14071 to 14071. [2022-11-25 17:42:15,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14071 states, 14070 states have (on average 1.2694385216773276) internal successors, (17861), 14070 states have internal predecessors, (17861), 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 17:42:15,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14071 states to 14071 states and 17861 transitions. [2022-11-25 17:42:15,973 INFO L78 Accepts]: Start accepts. Automaton has 14071 states and 17861 transitions. Word has length 599 [2022-11-25 17:42:15,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:15,974 INFO L495 AbstractCegarLoop]: Abstraction has 14071 states and 17861 transitions. [2022-11-25 17:42:15,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 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 17:42:15,975 INFO L276 IsEmpty]: Start isEmpty. Operand 14071 states and 17861 transitions. [2022-11-25 17:42:15,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2022-11-25 17:42:15,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:15,995 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:42:16,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 17:42:16,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:16,201 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:16,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:16,202 INFO L85 PathProgramCache]: Analyzing trace with hash 632483771, now seen corresponding path program 1 times [2022-11-25 17:42:16,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:16,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206283903] [2022-11-25 17:42:16,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:16,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:16,836 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-25 17:42:16,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:16,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206283903] [2022-11-25 17:42:16,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206283903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:16,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:16,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:42:16,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888657123] [2022-11-25 17:42:16,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:16,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:42:16,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:16,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:42:16,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:42:16,841 INFO L87 Difference]: Start difference. First operand 14071 states and 17861 transitions. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 2 states have internal predecessors, (534), 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 17:42:26,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:26,386 INFO L93 Difference]: Finished difference Result 36504 states and 47794 transitions. [2022-11-25 17:42:26,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:42:26,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 2 states have internal predecessors, (534), 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 600 [2022-11-25 17:42:26,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:26,442 INFO L225 Difference]: With dead ends: 36504 [2022-11-25 17:42:26,442 INFO L226 Difference]: Without dead ends: 25165 [2022-11-25 17:42:26,457 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 17:42:26,458 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 2110 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 5095 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 5529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:26,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2110 Valid, 964 Invalid, 5529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5095 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-11-25 17:42:26,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25165 states. [2022-11-25 17:42:26,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25165 to 23797. [2022-11-25 17:42:26,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23797 states, 23796 states have (on average 1.2674399058665322) internal successors, (30160), 23796 states have internal predecessors, (30160), 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 17:42:26,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23797 states to 23797 states and 30160 transitions. [2022-11-25 17:42:26,997 INFO L78 Accepts]: Start accepts. Automaton has 23797 states and 30160 transitions. Word has length 600 [2022-11-25 17:42:26,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:26,998 INFO L495 AbstractCegarLoop]: Abstraction has 23797 states and 30160 transitions. [2022-11-25 17:42:26,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 2 states have internal predecessors, (534), 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 17:42:26,998 INFO L276 IsEmpty]: Start isEmpty. Operand 23797 states and 30160 transitions. [2022-11-25 17:42:27,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2022-11-25 17:42:27,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:27,016 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:42:27,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:42:27,016 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:27,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:27,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1424774015, now seen corresponding path program 1 times [2022-11-25 17:42:27,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:27,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004300503] [2022-11-25 17:42:27,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:27,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:27,652 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-25 17:42:27,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:27,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004300503] [2022-11-25 17:42:27,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004300503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:27,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:27,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:42:27,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730039140] [2022-11-25 17:42:27,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:27,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:42:27,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:27,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:42:27,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:42:27,656 INFO L87 Difference]: Start difference. First operand 23797 states and 30160 transitions. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 2 states have internal predecessors, (534), 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 17:42:35,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:35,719 INFO L93 Difference]: Finished difference Result 50347 states and 65462 transitions. [2022-11-25 17:42:35,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:42:35,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 2 states have internal predecessors, (534), 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 617 [2022-11-25 17:42:35,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:35,775 INFO L225 Difference]: With dead ends: 50347 [2022-11-25 17:42:35,775 INFO L226 Difference]: Without dead ends: 29282 [2022-11-25 17:42:35,798 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 17:42:35,799 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 1377 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 3921 mSolverCounterSat, 2125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 6046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2125 IncrementalHoareTripleChecker+Valid, 3921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:35,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 723 Invalid, 6046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2125 Valid, 3921 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-25 17:42:35,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29282 states. [2022-11-25 17:42:36,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29282 to 29267. [2022-11-25 17:42:36,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29267 states, 29266 states have (on average 1.2553133328777422) internal successors, (36738), 29266 states have internal predecessors, (36738), 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 17:42:36,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29267 states to 29267 states and 36738 transitions. [2022-11-25 17:42:36,438 INFO L78 Accepts]: Start accepts. Automaton has 29267 states and 36738 transitions. Word has length 617 [2022-11-25 17:42:36,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:36,439 INFO L495 AbstractCegarLoop]: Abstraction has 29267 states and 36738 transitions. [2022-11-25 17:42:36,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 2 states have internal predecessors, (534), 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 17:42:36,440 INFO L276 IsEmpty]: Start isEmpty. Operand 29267 states and 36738 transitions. [2022-11-25 17:42:36,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2022-11-25 17:42:36,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:36,449 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:42:36,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:42:36,449 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:36,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:36,450 INFO L85 PathProgramCache]: Analyzing trace with hash -504910022, now seen corresponding path program 1 times [2022-11-25 17:42:36,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:36,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244750307] [2022-11-25 17:42:36,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:36,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:37,389 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-11-25 17:42:37,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:37,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244750307] [2022-11-25 17:42:37,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244750307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:37,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:42:37,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:42:37,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811825582] [2022-11-25 17:42:37,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:37,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:42:37,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:37,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:42:37,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:42:37,397 INFO L87 Difference]: Start difference. First operand 29267 states and 36738 transitions. Second operand has 4 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 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 17:42:52,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:42:52,404 INFO L93 Difference]: Finished difference Result 98282 states and 126943 transitions. [2022-11-25 17:42:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:42:52,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 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 829 [2022-11-25 17:42:52,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:42:52,523 INFO L225 Difference]: With dead ends: 98282 [2022-11-25 17:42:52,523 INFO L226 Difference]: Without dead ends: 71747 [2022-11-25 17:42:52,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 17:42:52,556 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 3381 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 8463 mSolverCounterSat, 3305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3381 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 11768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3305 IncrementalHoareTripleChecker+Valid, 8463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:42:52,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3381 Valid, 1081 Invalid, 11768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3305 Valid, 8463 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time] [2022-11-25 17:42:52,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71747 states. [2022-11-25 17:42:53,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71747 to 70298. [2022-11-25 17:42:53,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70298 states, 70297 states have (on average 1.2196110787089065) internal successors, (85735), 70297 states have internal predecessors, (85735), 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 17:42:53,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70298 states to 70298 states and 85735 transitions. [2022-11-25 17:42:53,459 INFO L78 Accepts]: Start accepts. Automaton has 70298 states and 85735 transitions. Word has length 829 [2022-11-25 17:42:53,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:42:53,460 INFO L495 AbstractCegarLoop]: Abstraction has 70298 states and 85735 transitions. [2022-11-25 17:42:53,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 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 17:42:53,461 INFO L276 IsEmpty]: Start isEmpty. Operand 70298 states and 85735 transitions. [2022-11-25 17:42:53,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2022-11-25 17:42:53,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:42:53,471 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:42:53,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:42:53,472 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:42:53,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:42:53,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1507889710, now seen corresponding path program 1 times [2022-11-25 17:42:53,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:42:53,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184219726] [2022-11-25 17:42:53,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:53,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:42:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:56,899 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 213 proven. 313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:42:56,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:42:56,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184219726] [2022-11-25 17:42:56,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184219726] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:42:56,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855776491] [2022-11-25 17:42:56,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:42:56,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:42:56,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:42:56,902 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:42:56,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:42:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:42:57,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:42:57,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:42:57,622 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 483 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-25 17:42:57,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:42:57,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855776491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:42:57,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:42:57,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-11-25 17:42:57,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795454982] [2022-11-25 17:42:57,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:42:57,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:42:57,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:42:57,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:42:57,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:42:57,627 INFO L87 Difference]: Start difference. First operand 70298 states and 85735 transitions. Second operand has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 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 17:43:06,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:43:06,349 INFO L93 Difference]: Finished difference Result 180280 states and 223997 transitions. [2022-11-25 17:43:06,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:43:06,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 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 847 [2022-11-25 17:43:06,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:43:06,467 INFO L225 Difference]: With dead ends: 180280 [2022-11-25 17:43:06,468 INFO L226 Difference]: Without dead ends: 112714 [2022-11-25 17:43:06,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 848 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:43:06,494 INFO L413 NwaCegarLoop]: 3042 mSDtfsCounter, 1255 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 4144 mSolverCounterSat, 1639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 3209 SdHoareTripleChecker+Invalid, 5783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1639 IncrementalHoareTripleChecker+Valid, 4144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:43:06,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 3209 Invalid, 5783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1639 Valid, 4144 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-25 17:43:06,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112714 states. [2022-11-25 17:43:07,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112714 to 112645. [2022-11-25 17:43:07,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112645 states, 112644 states have (on average 1.1865523241362168) internal successors, (133658), 112644 states have internal predecessors, (133658), 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 17:43:08,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112645 states to 112645 states and 133658 transitions. [2022-11-25 17:43:08,285 INFO L78 Accepts]: Start accepts. Automaton has 112645 states and 133658 transitions. Word has length 847 [2022-11-25 17:43:08,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:43:08,285 INFO L495 AbstractCegarLoop]: Abstraction has 112645 states and 133658 transitions. [2022-11-25 17:43:08,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 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 17:43:08,286 INFO L276 IsEmpty]: Start isEmpty. Operand 112645 states and 133658 transitions. [2022-11-25 17:43:08,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2022-11-25 17:43:08,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:43:08,297 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:43:08,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 17:43:08,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:43:08,503 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:43:08,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:43:08,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1283175140, now seen corresponding path program 1 times [2022-11-25 17:43:08,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:43:08,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026502123] [2022-11-25 17:43:08,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:43:08,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:43:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:43:10,164 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 278 proven. 88 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2022-11-25 17:43:10,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:43:10,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026502123] [2022-11-25 17:43:10,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026502123] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:43:10,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497439892] [2022-11-25 17:43:10,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:43:10,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:43:10,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:43:10,166 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:43:10,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:43:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:43:10,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 1075 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:43:10,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:43:10,713 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2022-11-25 17:43:10,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:43:10,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497439892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:43:10,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:43:10,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-25 17:43:10,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054816632] [2022-11-25 17:43:10,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:43:10,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:43:10,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:43:10,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:43:10,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:43:10,717 INFO L87 Difference]: Start difference. First operand 112645 states and 133658 transitions. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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 17:43:19,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:43:19,099 INFO L93 Difference]: Finished difference Result 222626 states and 264689 transitions. [2022-11-25 17:43:19,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:43:19,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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 905 [2022-11-25 17:43:19,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:43:19,212 INFO L225 Difference]: With dead ends: 222626 [2022-11-25 17:43:19,212 INFO L226 Difference]: Without dead ends: 112713 [2022-11-25 17:43:19,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 908 GetRequests, 905 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:43:19,256 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 1639 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 4858 mSolverCounterSat, 804 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 5662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 804 IncrementalHoareTripleChecker+Valid, 4858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-25 17:43:19,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1639 Valid, 684 Invalid, 5662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [804 Valid, 4858 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-25 17:43:19,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112713 states. [2022-11-25 17:43:21,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112713 to 109914. [2022-11-25 17:43:21,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109914 states, 109913 states have (on average 1.1808976190259568) internal successors, (129796), 109913 states have internal predecessors, (129796), 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 17:43:21,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109914 states to 109914 states and 129796 transitions. [2022-11-25 17:43:21,237 INFO L78 Accepts]: Start accepts. Automaton has 109914 states and 129796 transitions. Word has length 905 [2022-11-25 17:43:21,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:43:21,238 INFO L495 AbstractCegarLoop]: Abstraction has 109914 states and 129796 transitions. [2022-11-25 17:43:21,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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 17:43:21,239 INFO L276 IsEmpty]: Start isEmpty. Operand 109914 states and 129796 transitions. [2022-11-25 17:43:21,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1067 [2022-11-25 17:43:21,254 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:43:21,255 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:43:21,266 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:43:21,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:43:21,462 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:43:21,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:43:21,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1305313812, now seen corresponding path program 1 times [2022-11-25 17:43:21,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:43:21,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598487728] [2022-11-25 17:43:21,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:43:21,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:43:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:43:25,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 702 proven. 218 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-11-25 17:43:25,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:43:25,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598487728] [2022-11-25 17:43:25,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598487728] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:43:25,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737090242] [2022-11-25 17:43:25,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:43:25,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:43:25,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:43:25,031 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:43:25,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:43:25,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:43:25,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 17:43:25,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:43:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 830 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-25 17:43:25,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:43:25,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737090242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:43:25,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:43:25,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-11-25 17:43:25,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260137872] [2022-11-25 17:43:25,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:43:25,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:43:25,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:43:25,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:43:25,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:43:25,905 INFO L87 Difference]: Start difference. First operand 109914 states and 129796 transitions. Second operand has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 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 17:43:33,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:43:33,791 INFO L93 Difference]: Finished difference Result 258046 states and 303513 transitions. [2022-11-25 17:43:33,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:43:33,791 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 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 1066 [2022-11-25 17:43:33,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:43:34,198 INFO L225 Difference]: With dead ends: 258046 [2022-11-25 17:43:34,198 INFO L226 Difference]: Without dead ends: 148132 [2022-11-25 17:43:34,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1071 GetRequests, 1065 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:43:34,230 INFO L413 NwaCegarLoop]: 2428 mSDtfsCounter, 1526 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 3766 mSolverCounterSat, 1718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 2518 SdHoareTripleChecker+Invalid, 5484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1718 IncrementalHoareTripleChecker+Valid, 3766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:43:34,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 2518 Invalid, 5484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1718 Valid, 3766 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-25 17:43:34,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148132 states. [2022-11-25 17:43:35,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148132 to 141296. [2022-11-25 17:43:35,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141296 states, 141295 states have (on average 1.1467072437099686) internal successors, (162024), 141295 states have internal predecessors, (162024), 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 17:43:36,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141296 states to 141296 states and 162024 transitions. [2022-11-25 17:43:36,200 INFO L78 Accepts]: Start accepts. Automaton has 141296 states and 162024 transitions. Word has length 1066 [2022-11-25 17:43:36,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:43:36,201 INFO L495 AbstractCegarLoop]: Abstraction has 141296 states and 162024 transitions. [2022-11-25 17:43:36,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 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 17:43:36,202 INFO L276 IsEmpty]: Start isEmpty. Operand 141296 states and 162024 transitions. [2022-11-25 17:43:36,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2022-11-25 17:43:36,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:43:36,227 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:43:36,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 17:43:36,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbe6f5d3-730e-4f4a-95c8-ba4daf612cd9/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 17:43:36,428 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:43:36,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:43:36,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1945863632, now seen corresponding path program 1 times [2022-11-25 17:43:36,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:43:36,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421772054] [2022-11-25 17:43:36,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:43:36,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:43:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:43:37,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 724 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-11-25 17:43:37,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:43:37,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421772054] [2022-11-25 17:43:37,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421772054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:43:37,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:43:37,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:43:37,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513335773] [2022-11-25 17:43:37,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:43:37,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:43:37,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:43:37,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:43:37,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:43:37,643 INFO L87 Difference]: Start difference. First operand 141296 states and 162024 transitions. Second operand has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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 17:43:51,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:43:51,570 INFO L93 Difference]: Finished difference Result 409561 states and 481820 transitions. [2022-11-25 17:43:51,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:43:51,571 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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 1081 [2022-11-25 17:43:51,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:43:51,942 INFO L225 Difference]: With dead ends: 409561 [2022-11-25 17:43:51,942 INFO L226 Difference]: Without dead ends: 270997 [2022-11-25 17:43:52,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 17:43:52,007 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 3090 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 6260 mSolverCounterSat, 2530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3090 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 8790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2530 IncrementalHoareTripleChecker+Valid, 6260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:43:52,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3090 Valid, 1194 Invalid, 8790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2530 Valid, 6260 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2022-11-25 17:43:52,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270997 states. [2022-11-25 17:43:55,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270997 to 270979. [2022-11-25 17:43:55,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270979 states, 270978 states have (on average 1.1402143347430418) internal successors, (308973), 270978 states have internal predecessors, (308973), 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 17:43:55,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270979 states to 270979 states and 308973 transitions. [2022-11-25 17:43:55,622 INFO L78 Accepts]: Start accepts. Automaton has 270979 states and 308973 transitions. Word has length 1081 [2022-11-25 17:43:55,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:43:55,623 INFO L495 AbstractCegarLoop]: Abstraction has 270979 states and 308973 transitions. [2022-11-25 17:43:55,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 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 17:43:55,623 INFO L276 IsEmpty]: Start isEmpty. Operand 270979 states and 308973 transitions. [2022-11-25 17:43:55,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1127 [2022-11-25 17:43:55,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:43:55,633 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 17:43:55,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:43:55,634 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:43:55,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:43:55,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1451625618, now seen corresponding path program 1 times [2022-11-25 17:43:55,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:43:55,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951111803] [2022-11-25 17:43:55,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:43:55,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:43:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:43:57,860 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 783 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:43:57,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:43:57,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951111803] [2022-11-25 17:43:57,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951111803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:43:57,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:43:57,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:43:57,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139940384] [2022-11-25 17:43:57,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:43:57,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:43:57,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:43:57,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:43:57,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:43:57,865 INFO L87 Difference]: Start difference. First operand 270979 states and 308973 transitions. Second operand has 4 states, 4 states have (on average 281.5) internal successors, (1126), 4 states have internal predecessors, (1126), 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 17:44:15,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:44:15,341 INFO L93 Difference]: Finished difference Result 777025 states and 884622 transitions. [2022-11-25 17:44:15,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:44:15,342 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 281.5) internal successors, (1126), 4 states have internal predecessors, (1126), 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 1126 [2022-11-25 17:44:15,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:44:16,108 INFO L225 Difference]: With dead ends: 777025 [2022-11-25 17:44:16,108 INFO L226 Difference]: Without dead ends: 508778 [2022-11-25 17:44:16,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 17:44:16,284 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 2754 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 9438 mSolverCounterSat, 2012 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2754 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 11450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2012 IncrementalHoareTripleChecker+Valid, 9438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:44:16,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2754 Valid, 1268 Invalid, 11450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2012 Valid, 9438 Invalid, 0 Unknown, 0 Unchecked, 14.8s Time] [2022-11-25 17:44:16,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508778 states. [2022-11-25 17:44:21,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508778 to 403463. [2022-11-25 17:44:22,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403463 states, 403462 states have (on average 1.1382435024859838) internal successors, (459238), 403462 states have internal predecessors, (459238), 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 17:44:23,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403463 states to 403463 states and 459238 transitions. [2022-11-25 17:44:23,662 INFO L78 Accepts]: Start accepts. Automaton has 403463 states and 459238 transitions. Word has length 1126 [2022-11-25 17:44:23,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:44:23,662 INFO L495 AbstractCegarLoop]: Abstraction has 403463 states and 459238 transitions. [2022-11-25 17:44:23,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.5) internal successors, (1126), 4 states have internal predecessors, (1126), 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 17:44:23,663 INFO L276 IsEmpty]: Start isEmpty. Operand 403463 states and 459238 transitions. [2022-11-25 17:44:23,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1199 [2022-11-25 17:44:23,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:44:23,676 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-25 17:44:23,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:44:23,676 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:44:23,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:44:23,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1110859625, now seen corresponding path program 1 times [2022-11-25 17:44:23,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:44:23,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661577733] [2022-11-25 17:44:23,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:44:23,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:44:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat