./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal8.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal8.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fb386b526e08355011f5cf90a74b471f6ddeec6b312cbb262635a286cb1d85ca --- 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-5e519f3 [2022-11-03 04:05:57,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:05:57,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:05:57,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:05:57,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:05:57,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:05:57,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:05:57,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:05:57,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:05:57,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:05:57,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:05:57,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:05:57,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:05:57,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:05:57,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:05:57,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:05:57,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:05:57,761 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:05:57,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:05:57,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:05:57,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:05:57,773 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:05:57,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:05:57,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:05:57,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:05:57,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:05:57,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:05:57,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:05:57,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:05:57,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:05:57,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:05:57,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:05:57,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:05:57,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:05:57,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:05:57,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:05:57,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:05:57,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:05:57,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:05:57,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:05:57,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:05:57,809 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 04:05:57,866 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:05:57,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:05:57,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:05:57,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:05:57,868 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:05:57,868 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:05:57,869 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:05:57,869 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:05:57,869 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:05:57,869 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 04:05:57,870 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:05:57,871 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:05:57,871 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 04:05:57,871 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 04:05:57,871 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:05:57,872 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 04:05:57,872 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 04:05:57,872 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 04:05:57,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:05:57,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 04:05:57,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:05:57,873 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:05:57,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:05:57,875 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:05:57,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:05:57,876 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:05:57,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:05:57,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:05:57,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:05:57,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:05:57,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:05:57,877 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 04:05:57,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:05:57,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:05:57,878 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 04:05:57,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 04:05:57,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:05:57,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:05:57,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb386b526e08355011f5cf90a74b471f6ddeec6b312cbb262635a286cb1d85ca [2022-11-03 04:05:58,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:05:58,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:05:58,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:05:58,262 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:05:58,263 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:05:58,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal8.c [2022-11-03 04:05:58,355 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/data/2bacbf015/293e80c2d67c43568bcdfdf21e48c52f/FLAGc15a35490 [2022-11-03 04:05:59,144 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:05:59,144 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal8.c [2022-11-03 04:05:59,160 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/data/2bacbf015/293e80c2d67c43568bcdfdf21e48c52f/FLAGc15a35490 [2022-11-03 04:05:59,270 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/data/2bacbf015/293e80c2d67c43568bcdfdf21e48c52f [2022-11-03 04:05:59,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:05:59,278 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:05:59,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:05:59,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:05:59,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:05:59,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:05:59" (1/1) ... [2022-11-03 04:05:59,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@511c1fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:05:59, skipping insertion in model container [2022-11-03 04:05:59,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:05:59" (1/1) ... [2022-11-03 04:05:59,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:05:59,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:05:59,700 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal8.c[1107,1120] [2022-11-03 04:06:00,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:06:00,107 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:06:00,120 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal8.c[1107,1120] [2022-11-03 04:06:00,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:06:00,355 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:06:00,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:00 WrapperNode [2022-11-03 04:06:00,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:06:00,357 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:06:00,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:06:00,358 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:06:00,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:00" (1/1) ... [2022-11-03 04:06:00,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:00" (1/1) ... [2022-11-03 04:06:00,703 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1846 [2022-11-03 04:06:00,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:06:00,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:06:00,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:06:00,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:06:00,730 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:00" (1/1) ... [2022-11-03 04:06:00,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:00" (1/1) ... [2022-11-03 04:06:00,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:00" (1/1) ... [2022-11-03 04:06:00,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:00" (1/1) ... [2022-11-03 04:06:00,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:00" (1/1) ... [2022-11-03 04:06:00,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:00" (1/1) ... [2022-11-03 04:06:00,929 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:00" (1/1) ... [2022-11-03 04:06:00,949 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:00" (1/1) ... [2022-11-03 04:06:00,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:06:00,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:06:00,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:06:00,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:06:01,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:00" (1/1) ... [2022-11-03 04:06:01,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:06:01,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:06:01,085 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:06:01,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:06:01,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:06:01,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:06:01,641 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:06:01,643 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:06:07,640 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:06:14,903 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:06:14,903 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:06:14,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:14 BoogieIcfgContainer [2022-11-03 04:06:14,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:06:14,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:06:14,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:06:14,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:06:14,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:05:59" (1/3) ... [2022-11-03 04:06:14,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51906a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:06:14, skipping insertion in model container [2022-11-03 04:06:14,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:06:00" (2/3) ... [2022-11-03 04:06:14,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51906a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:06:14, skipping insertion in model container [2022-11-03 04:06:14,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:14" (3/3) ... [2022-11-03 04:06:14,916 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal8.c [2022-11-03 04:06:14,939 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:06:14,939 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:06:15,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:06:15,023 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=FINITE_AUTOMATA, 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;@34d0a384, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:06:15,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:06:15,029 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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) [2022-11-03 04:06:15,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 04:06:15,039 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:15,040 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 04:06:15,041 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:15,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:15,049 INFO L85 PathProgramCache]: Analyzing trace with hash 23457583, now seen corresponding path program 1 times [2022-11-03 04:06:15,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 04:06:15,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837453712] [2022-11-03 04:06:15,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:15,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:06:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:06:58,015 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 04:07:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:07:29,374 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 04:07:29,377 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 04:07:29,378 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 04:07:29,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 04:07:29,386 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 04:07:29,391 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 04:07:29,481 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 04:07:29,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:07:29 BoogieIcfgContainer [2022-11-03 04:07:29,546 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 04:07:29,549 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 04:07:29,550 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 04:07:29,550 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 04:07:29,551 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:06:14" (3/4) ... [2022-11-03 04:07:29,556 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 04:07:29,556 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 04:07:29,558 INFO L158 Benchmark]: Toolchain (without parser) took 90279.38ms. Allocated memory was 96.5MB in the beginning and 3.7GB in the end (delta: 3.6GB). Free memory was 53.5MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. [2022-11-03 04:07:29,559 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 96.5MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:07:29,561 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1075.43ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 53.3MB in the beginning and 87.1MB in the end (delta: -33.8MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2022-11-03 04:07:29,563 INFO L158 Benchmark]: Boogie Procedure Inliner took 346.18ms. Allocated memory is still 127.9MB. Free memory was 87.1MB in the beginning and 79.0MB in the end (delta: 8.1MB). Peak memory consumption was 42.2MB. Max. memory is 16.1GB. [2022-11-03 04:07:29,568 INFO L158 Benchmark]: Boogie Preprocessor took 286.87ms. Allocated memory is still 127.9MB. Free memory was 79.0MB in the beginning and 64.4MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-03 04:07:29,571 INFO L158 Benchmark]: RCFGBuilder took 13914.39ms. Allocated memory was 127.9MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 64.4MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 529.9MB. Max. memory is 16.1GB. [2022-11-03 04:07:29,572 INFO L158 Benchmark]: TraceAbstraction took 74637.46ms. Allocated memory was 1.4GB in the beginning and 3.7GB in the end (delta: 2.3GB). Free memory was 1.1GB in the beginning and 1.5GB in the end (delta: -355.5MB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. [2022-11-03 04:07:29,573 INFO L158 Benchmark]: Witness Printer took 6.83ms. Allocated memory is still 3.7GB. Free memory is still 1.5GB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:07:29,577 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 96.5MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1075.43ms. Allocated memory was 96.5MB in the beginning and 127.9MB in the end (delta: 31.5MB). Free memory was 53.3MB in the beginning and 87.1MB in the end (delta: -33.8MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 346.18ms. Allocated memory is still 127.9MB. Free memory was 87.1MB in the beginning and 79.0MB in the end (delta: 8.1MB). Peak memory consumption was 42.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 286.87ms. Allocated memory is still 127.9MB. Free memory was 79.0MB in the beginning and 64.4MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * RCFGBuilder took 13914.39ms. Allocated memory was 127.9MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 64.4MB in the beginning and 1.1GB in the end (delta: -1.1GB). Peak memory consumption was 529.9MB. Max. memory is 16.1GB. * TraceAbstraction took 74637.46ms. Allocated memory was 1.4GB in the beginning and 3.7GB in the end (delta: 2.3GB). Free memory was 1.1GB in the beginning and 1.5GB in the end (delta: -355.5MB). Peak memory consumption was 2.0GB. Max. memory is 16.1GB. * Witness Printer took 6.83ms. Allocated memory is still 3.7GB. Free memory is still 1.5GB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 192, overapproximation of bitwiseAnd at line 158, overapproximation of bitwiseComplement at line 189, overapproximation of bitwiseXOr at line 195. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_6 mask_SORT_6 = (SORT_6)-1 >> (sizeof(SORT_6) * 8 - 2); [L29] const SORT_6 msb_SORT_6 = (SORT_6)1 << (2 - 1); [L31] const SORT_8 mask_SORT_8 = (SORT_8)-1 >> (sizeof(SORT_8) * 8 - 3); [L32] const SORT_8 msb_SORT_8 = (SORT_8)1 << (3 - 1); [L34] const SORT_14 mask_SORT_14 = (SORT_14)-1 >> (sizeof(SORT_14) * 8 - 5); [L35] const SORT_14 msb_SORT_14 = (SORT_14)1 << (5 - 1); [L37] const SORT_17 mask_SORT_17 = (SORT_17)-1 >> (sizeof(SORT_17) * 8 - 8); [L38] const SORT_17 msb_SORT_17 = (SORT_17)1 << (8 - 1); [L40] const SORT_105 mask_SORT_105 = (SORT_105)-1 >> (sizeof(SORT_105) * 8 - 4); [L41] const SORT_105 msb_SORT_105 = (SORT_105)1 << (4 - 1); [L43] const SORT_145 mask_SORT_145 = (SORT_145)-1 >> (sizeof(SORT_145) * 8 - 6); [L44] const SORT_145 msb_SORT_145 = (SORT_145)1 << (6 - 1); [L46] const SORT_147 mask_SORT_147 = (SORT_147)-1 >> (sizeof(SORT_147) * 8 - 7); [L47] const SORT_147 msb_SORT_147 = (SORT_147)1 << (7 - 1); [L49] const SORT_150 mask_SORT_150 = (SORT_150)-1 >> (sizeof(SORT_150) * 8 - 9); [L50] const SORT_150 msb_SORT_150 = (SORT_150)1 << (9 - 1); [L52] const SORT_152 mask_SORT_152 = (SORT_152)-1 >> (sizeof(SORT_152) * 8 - 10); [L53] const SORT_152 msb_SORT_152 = (SORT_152)1 << (10 - 1); [L55] const SORT_154 mask_SORT_154 = (SORT_154)-1 >> (sizeof(SORT_154) * 8 - 11); [L56] const SORT_154 msb_SORT_154 = (SORT_154)1 << (11 - 1); [L58] const SORT_156 mask_SORT_156 = (SORT_156)-1 >> (sizeof(SORT_156) * 8 - 12); [L59] const SORT_156 msb_SORT_156 = (SORT_156)1 << (12 - 1); [L61] const SORT_1 var_27 = 0; [L62] const SORT_17 var_31 = 0; [L63] const SORT_6 var_37 = 0; [L64] const SORT_1 var_45 = 1; [L65] const SORT_8 var_46 = 1; [L66] const SORT_8 var_49 = 3; [L67] const SORT_8 var_52 = 2; [L68] const SORT_8 var_56 = 5; [L69] const SORT_8 var_59 = 7; [L70] const SORT_8 var_62 = 6; [L71] const SORT_8 var_66 = 4; [L72] const SORT_6 var_72 = 2; [L73] const SORT_6 var_74 = 1; [L74] const SORT_6 var_84 = 3; [L75] const SORT_14 var_95 = 11; [L76] const SORT_14 var_97 = 10; [L77] const SORT_14 var_99 = 2; [L78] const SORT_14 var_101 = 9; [L79] const SORT_14 var_117 = 21; [L80] const SORT_14 var_119 = 20; [L81] const SORT_14 var_121 = 19; [L82] const SORT_14 var_123 = 18; [L83] const SORT_14 var_125 = 17; [L84] const SORT_14 var_127 = 16; [L85] const SORT_14 var_129 = 15; [L86] const SORT_14 var_131 = 14; [L87] const SORT_14 var_133 = 8; [L88] const SORT_14 var_135 = 6; [L89] const SORT_14 var_137 = 3; [L90] const SORT_14 var_139 = 5; [L91] const SORT_14 var_159 = 4; [L92] const SORT_14 var_161 = 1; [L93] const SORT_14 var_171 = 7; [L94] const SORT_14 var_189 = 13; [L95] const SORT_14 var_197 = 12; [L96] const SORT_14 var_218 = 23; [L97] const SORT_14 var_221 = 22; [L98] const SORT_14 var_230 = 25; [L99] const SORT_14 var_233 = 27; [L100] const SORT_14 var_236 = 26; [L101] const SORT_14 var_240 = 29; [L102] const SORT_14 var_243 = 31; [L103] const SORT_14 var_246 = 30; [L104] const SORT_14 var_250 = 28; [L105] const SORT_14 var_256 = 24; [L106] const SORT_145 var_279 = 0; [L107] const SORT_17 var_299 = 2; [L108] const SORT_17 var_302 = 1; [L109] const SORT_17 var_409 = 3; [L111] SORT_1 input_2; [L112] SORT_1 input_3; [L113] SORT_1 input_4; [L114] SORT_1 input_5; [L115] SORT_6 input_7; [L116] SORT_8 input_9; [L117] SORT_6 input_10; [L118] SORT_1 input_11; [L119] SORT_1 input_12; [L120] SORT_1 input_13; [L121] SORT_14 input_15; [L122] SORT_6 input_16; [L123] SORT_17 input_18; [L124] SORT_6 input_19; [L125] SORT_1 input_20; [L126] SORT_1 input_21; [L127] SORT_6 input_22; [L128] SORT_17 input_23; [L129] SORT_17 input_24; [L130] SORT_1 input_25; [L131] SORT_6 input_26; [L133] SORT_1 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L134] SORT_17 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_17; [L135] SORT_1 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L136] SORT_6 state_38 = __VERIFIER_nondet_uchar() & mask_SORT_6; [L137] SORT_17 state_311 = __VERIFIER_nondet_uchar() & mask_SORT_17; [L138] SORT_1 state_328 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L139] SORT_6 state_357 = __VERIFIER_nondet_uchar() & mask_SORT_6; [L141] SORT_1 init_29_arg_1 = var_27; [L142] state_28 = init_29_arg_1 [L143] SORT_17 init_33_arg_1 = var_31; [L144] state_32 = init_33_arg_1 [L145] SORT_1 init_35_arg_1 = var_27; [L146] state_34 = init_35_arg_1 [L147] SORT_6 init_39_arg_1 = var_37; [L148] state_38 = init_39_arg_1 [L149] SORT_17 init_312_arg_1 = var_31; [L150] state_311 = init_312_arg_1 [L151] SORT_1 init_329_arg_1 = var_27; [L152] state_328 = init_329_arg_1 [L153] SORT_6 init_358_arg_1 = var_37; [L154] state_357 = init_358_arg_1 VAL [init_29_arg_1=0, init_312_arg_1=0, init_329_arg_1=0, init_33_arg_1=0, init_358_arg_1=0, init_35_arg_1=0, init_39_arg_1=0, mask_SORT_1=1, mask_SORT_105=15, mask_SORT_14=31, mask_SORT_145=63, mask_SORT_147=127, mask_SORT_150=511, mask_SORT_152=1023, mask_SORT_154=2047, mask_SORT_156=4095, mask_SORT_17=255, mask_SORT_6=3, mask_SORT_8=7, msb_SORT_1=1, msb_SORT_105=8, msb_SORT_14=16, msb_SORT_145=32, msb_SORT_147=64, msb_SORT_150=256, msb_SORT_152=512, msb_SORT_154=1024, msb_SORT_156=2048, msb_SORT_17=128, msb_SORT_6=2, msb_SORT_8=4, state_28=0, state_311=0, state_32=0, state_328=0, state_34=0, state_357=0, state_38=0, var_101=9, var_117=21, var_119=20, var_121=19, var_123=18, var_125=17, var_127=16, var_129=15, var_131=14, var_133=8, var_135=6, var_137=3, var_139=5, var_159=4, var_161=1, var_171=7, var_189=13, var_197=12, var_218=23, var_221=22, var_230=25, var_233=27, var_236=26, var_240=29, var_243=31, var_246=30, var_250=28, var_256=24, var_27=0, var_279=0, var_299=2, var_302=1, var_31=0, var_37=0, var_409=3, var_45=1, var_46=1, var_49=3, var_52=2, var_56=5, var_59=7, var_62=6, var_66=4, var_72=2, var_74=1, var_84=3, var_95=11, var_97=10, var_99=2] [L157] input_2 = __VERIFIER_nondet_uchar() [L158] input_2 = input_2 & mask_SORT_1 [L159] input_3 = __VERIFIER_nondet_uchar() [L160] input_3 = input_3 & mask_SORT_1 [L161] input_4 = __VERIFIER_nondet_uchar() [L162] input_5 = __VERIFIER_nondet_uchar() [L163] input_5 = input_5 & mask_SORT_1 [L164] input_7 = __VERIFIER_nondet_uchar() [L165] input_7 = input_7 & mask_SORT_6 [L166] input_9 = __VERIFIER_nondet_uchar() [L167] input_9 = input_9 & mask_SORT_8 [L168] input_10 = __VERIFIER_nondet_uchar() [L169] input_10 = input_10 & mask_SORT_6 [L170] input_11 = __VERIFIER_nondet_uchar() [L171] input_11 = input_11 & mask_SORT_1 [L172] input_12 = __VERIFIER_nondet_uchar() [L173] input_13 = __VERIFIER_nondet_uchar() [L174] input_15 = __VERIFIER_nondet_uchar() [L175] input_15 = input_15 & mask_SORT_14 [L176] input_16 = __VERIFIER_nondet_uchar() [L177] input_18 = __VERIFIER_nondet_uchar() [L178] input_19 = __VERIFIER_nondet_uchar() [L179] input_20 = __VERIFIER_nondet_uchar() [L180] input_21 = __VERIFIER_nondet_uchar() [L181] input_22 = __VERIFIER_nondet_uchar() [L182] input_23 = __VERIFIER_nondet_uchar() [L183] input_24 = __VERIFIER_nondet_uchar() [L184] input_25 = __VERIFIER_nondet_uchar() [L185] input_26 = __VERIFIER_nondet_uchar() [L188] SORT_1 var_30_arg_0 = state_28; [L189] SORT_1 var_30 = ~var_30_arg_0; [L190] SORT_1 var_81_arg_0 = input_12; [L191] SORT_1 var_81_arg_1 = input_11; [L192] SORT_6 var_81 = ((SORT_6)var_81_arg_0 << 1) | var_81_arg_1; [L193] var_81 = var_81 & mask_SORT_6 [L194] SORT_6 var_82_arg_0 = var_81; [L195] var_82_arg_0 ^= var_82_arg_0 >> 4 [L196] var_82_arg_0 ^= var_82_arg_0 >> 2 [L197] var_82_arg_0 ^= var_82_arg_0 >> 1 [L198] SORT_1 var_82 = var_82_arg_0; [L199] SORT_8 var_287_arg_0 = input_9; [L200] SORT_8 var_287_arg_1 = var_52; [L201] SORT_1 var_287 = var_287_arg_0 == var_287_arg_1; [L202] SORT_8 var_286_arg_0 = input_9; [L203] SORT_8 var_286_arg_1 = var_46; [L204] SORT_1 var_286 = var_286_arg_0 == var_286_arg_1; [L205] SORT_8 var_285_arg_0 = input_9; [L206] SORT_8 var_285_arg_1 = var_66; [L207] SORT_1 var_285 = var_285_arg_0 == var_285_arg_1; [L208] SORT_8 var_284_arg_0 = input_9; [L209] SORT_8 var_284_arg_1 = var_56; [L210] SORT_1 var_284 = var_284_arg_0 == var_284_arg_1; [L211] SORT_1 var_288_arg_0 = var_285; [L212] SORT_1 var_288_arg_1 = var_284; [L213] SORT_6 var_288 = ((SORT_6)var_288_arg_0 << 1) | var_288_arg_1; [L214] var_288 = var_288 & mask_SORT_6 [L215] SORT_1 var_289_arg_0 = var_286; [L216] SORT_6 var_289_arg_1 = var_288; [L217] SORT_8 var_289 = ((SORT_8)var_289_arg_0 << 2) | var_289_arg_1; [L218] var_289 = var_289 & mask_SORT_8 [L219] SORT_1 var_290_arg_0 = var_287; [L220] SORT_8 var_290_arg_1 = var_289; [L221] SORT_105 var_290 = ((SORT_105)var_290_arg_0 << 3) | var_290_arg_1; [L222] var_290 = var_290 & mask_SORT_105 [L223] SORT_105 var_291_arg_0 = var_290; [L224] SORT_1 var_291 = var_291_arg_0 != 0; [L225] SORT_6 var_75_arg_0 = input_10; [L226] SORT_6 var_75_arg_1 = var_74; [L227] SORT_1 var_75 = var_75_arg_0 == var_75_arg_1; [L228] SORT_8 var_63_arg_0 = input_9; [L229] SORT_8 var_63_arg_1 = var_62; [L230] SORT_1 var_63 = var_63_arg_0 == var_63_arg_1; [L231] SORT_8 var_60_arg_0 = input_9; [L232] SORT_8 var_60_arg_1 = var_59; [L233] SORT_1 var_60 = var_60_arg_0 == var_60_arg_1; [L234] SORT_1 var_64_arg_0 = var_63; [L235] SORT_1 var_64_arg_1 = var_60; [L236] SORT_1 var_64 = var_64_arg_0 | var_64_arg_1; [L237] var_64 = var_64 & mask_SORT_1 [L238] SORT_8 var_57_arg_0 = input_9; [L239] SORT_8 var_57_arg_1 = var_56; [L240] SORT_1 var_57 = var_57_arg_0 == var_57_arg_1; [L241] SORT_8 var_67_arg_0 = input_9; [L242] SORT_8 var_67_arg_1 = var_66; [L243] SORT_1 var_67 = var_67_arg_0 == var_67_arg_1; [L244] SORT_1 var_68_arg_0 = var_57; [L245] SORT_1 var_68_arg_1 = var_67; [L246] SORT_6 var_68 = ((SORT_6)var_68_arg_0 << 1) | var_68_arg_1; [L247] var_68 = var_68 & mask_SORT_6 [L248] SORT_1 var_69_arg_0 = var_64; [L249] SORT_6 var_69_arg_1 = var_68; [L250] SORT_8 var_69 = ((SORT_8)var_69_arg_0 << 2) | var_69_arg_1; [L251] var_69 = var_69 & mask_SORT_8 [L252] SORT_8 var_70_arg_0 = var_69; [L253] SORT_1 var_70 = var_70_arg_0 != 0; [L254] SORT_1 var_61_arg_0 = var_60; [L255] SORT_1 var_61_arg_1 = var_45; [L256] SORT_1 var_61_arg_2 = var_45; [L257] EXPR var_61_arg_0 ? var_61_arg_1 : var_61_arg_2 [L257] SORT_1 var_61 = var_61_arg_0 ? var_61_arg_1 : var_61_arg_2; [L258] SORT_1 var_58_arg_0 = var_57; [L259] SORT_1 var_58_arg_1 = var_27; [L260] SORT_1 var_58_arg_2 = var_27; [L261] EXPR var_58_arg_0 ? var_58_arg_1 : var_58_arg_2 [L261] SORT_1 var_58 = var_58_arg_0 ? var_58_arg_1 : var_58_arg_2; [L262] SORT_1 var_65_arg_0 = var_64; [L263] SORT_1 var_65_arg_1 = var_61; [L264] SORT_1 var_65_arg_2 = var_58; [L265] EXPR var_65_arg_0 ? var_65_arg_1 : var_65_arg_2 [L265] SORT_1 var_65 = var_65_arg_0 ? var_65_arg_1 : var_65_arg_2; [L266] SORT_8 var_53_arg_0 = input_9; [L267] SORT_8 var_53_arg_1 = var_52; [L268] SORT_1 var_53 = var_53_arg_0 == var_53_arg_1; [L269] SORT_8 var_50_arg_0 = input_9; [L270] SORT_8 var_50_arg_1 = var_49; [L271] SORT_1 var_50 = var_50_arg_0 == var_50_arg_1; [L272] SORT_1 var_54_arg_0 = var_53; [L273] SORT_1 var_54_arg_1 = var_50; [L274] SORT_1 var_54 = var_54_arg_0 | var_54_arg_1; [L275] var_54 = var_54 & mask_SORT_1 [L276] SORT_1 var_51_arg_0 = var_50; [L277] SORT_1 var_51_arg_1 = var_45; [L278] SORT_1 var_51_arg_2 = var_27; [L279] EXPR var_51_arg_0 ? var_51_arg_1 : var_51_arg_2 [L279] SORT_1 var_51 = var_51_arg_0 ? var_51_arg_1 : var_51_arg_2; [L280] SORT_8 var_47_arg_0 = input_9; [L281] SORT_8 var_47_arg_1 = var_46; [L282] SORT_1 var_47 = var_47_arg_0 == var_47_arg_1; [L283] SORT_1 var_48_arg_0 = var_47; [L284] SORT_1 var_48_arg_1 = var_27; [L285] SORT_1 var_48_arg_2 = var_45; [L286] EXPR var_48_arg_0 ? var_48_arg_1 : var_48_arg_2 [L286] SORT_1 var_48 = var_48_arg_0 ? var_48_arg_1 : var_48_arg_2; [L287] SORT_1 var_55_arg_0 = var_54; [L288] SORT_1 var_55_arg_1 = var_51; [L289] SORT_1 var_55_arg_2 = var_48; [L290] EXPR var_55_arg_0 ? var_55_arg_1 : var_55_arg_2 [L290] SORT_1 var_55 = var_55_arg_0 ? var_55_arg_1 : var_55_arg_2; [L291] SORT_1 var_71_arg_0 = var_70; [L292] SORT_1 var_71_arg_1 = var_65; [L293] SORT_1 var_71_arg_2 = var_55; [L294] EXPR var_71_arg_0 ? var_71_arg_1 : var_71_arg_2 [L294] SORT_1 var_71 = var_71_arg_0 ? var_71_arg_1 : var_71_arg_2; [L295] var_71 = var_71 & mask_SORT_1 [L296] SORT_6 var_73_arg_0 = input_10; [L297] SORT_6 var_73_arg_1 = var_72; [L298] SORT_1 var_73 = var_73_arg_0 == var_73_arg_1; [L299] SORT_1 var_281_arg_0 = var_75; [L300] SORT_1 var_281_arg_1 = var_73; [L301] SORT_6 var_281 = ((SORT_6)var_281_arg_0 << 1) | var_281_arg_1; [L302] var_281 = var_281 & mask_SORT_6 [L303] SORT_6 var_282_arg_0 = var_281; [L304] SORT_1 var_282 = var_282_arg_0 != 0; [L305] SORT_1 var_283_arg_0 = var_71; [L306] SORT_1 var_283_arg_1 = var_282; [L307] SORT_1 var_283_arg_2 = var_27; [L308] EXPR var_283_arg_0 ? var_283_arg_1 : var_283_arg_2 [L308] SORT_1 var_283 = var_283_arg_0 ? var_283_arg_1 : var_283_arg_2; [L309] SORT_1 var_292_arg_0 = var_291; [L310] SORT_1 var_292_arg_1 = var_75; [L311] SORT_1 var_292_arg_2 = var_283; [L312] EXPR var_292_arg_0 ? var_292_arg_1 : var_292_arg_2 [L312] SORT_1 var_292 = var_292_arg_0 ? var_292_arg_1 : var_292_arg_2; [L313] SORT_6 var_85_arg_0 = input_7; [L314] SORT_6 var_85_arg_1 = var_84; [L315] SORT_1 var_85 = var_85_arg_0 == var_85_arg_1; [L316] SORT_1 var_293_arg_0 = var_292; [L317] SORT_1 var_293_arg_1 = var_85; [L318] SORT_6 var_293 = ((SORT_6)var_293_arg_0 << 1) | var_293_arg_1; [L319] var_293 = var_293 & mask_SORT_6 [L320] SORT_1 var_294_arg_0 = var_82; [L321] SORT_6 var_294_arg_1 = var_293; [L322] SORT_8 var_294 = ((SORT_8)var_294_arg_0 << 2) | var_294_arg_1; [L323] var_294 = var_294 & mask_SORT_8 [L324] SORT_8 var_295_arg_0 = var_294; [L325] SORT_1 var_295 = var_295_arg_0 != 0; [L326] SORT_1 var_296_arg_0 = input_13; [L327] SORT_1 var_296_arg_1 = var_295; [L328] SORT_6 var_296 = ((SORT_6)var_296_arg_0 << 1) | var_296_arg_1; [L329] var_296 = var_296 & mask_SORT_6 [L330] SORT_6 var_297_arg_0 = var_296; [L331] SORT_1 var_297 = var_297_arg_0 == mask_SORT_6; [L332] SORT_14 var_247_arg_0 = input_15; [L333] SORT_14 var_247_arg_1 = var_246; [L334] SORT_1 var_247 = var_247_arg_0 == var_247_arg_1; [L335] SORT_14 var_244_arg_0 = input_15; [L336] SORT_14 var_244_arg_1 = var_243; [L337] SORT_1 var_244 = var_244_arg_0 == var_244_arg_1; [L338] SORT_1 var_248_arg_0 = var_247; [L339] SORT_1 var_248_arg_1 = var_244; [L340] SORT_1 var_248 = var_248_arg_0 | var_248_arg_1; [L341] var_248 = var_248 & mask_SORT_1 [L342] SORT_14 var_241_arg_0 = input_15; [L343] SORT_14 var_241_arg_1 = var_240; [L344] SORT_1 var_241 = var_241_arg_0 == var_241_arg_1; [L345] SORT_14 var_251_arg_0 = input_15; [L346] SORT_14 var_251_arg_1 = var_250; [L347] SORT_1 var_251 = var_251_arg_0 == var_251_arg_1; [L348] SORT_1 var_252_arg_0 = var_241; [L349] SORT_1 var_252_arg_1 = var_251; [L350] SORT_6 var_252 = ((SORT_6)var_252_arg_0 << 1) | var_252_arg_1; [L351] var_252 = var_252 & mask_SORT_6 [L352] SORT_1 var_253_arg_0 = var_248; [L353] SORT_6 var_253_arg_1 = var_252; [L354] SORT_8 var_253 = ((SORT_8)var_253_arg_0 << 2) | var_253_arg_1; [L355] var_253 = var_253 & mask_SORT_8 [L356] SORT_8 var_254_arg_0 = var_253; [L357] SORT_1 var_254 = var_254_arg_0 != 0; [L358] SORT_14 var_237_arg_0 = input_15; [L359] SORT_14 var_237_arg_1 = var_236; [L360] SORT_1 var_237 = var_237_arg_0 == var_237_arg_1; [L361] SORT_14 var_234_arg_0 = input_15; [L362] SORT_14 var_234_arg_1 = var_233; [L363] SORT_1 var_234 = var_234_arg_0 == var_234_arg_1; [L364] SORT_1 var_238_arg_0 = var_237; [L365] SORT_1 var_238_arg_1 = var_234; [L366] SORT_1 var_238 = var_238_arg_0 | var_238_arg_1; [L367] var_238 = var_238 & mask_SORT_1 [L368] SORT_14 var_231_arg_0 = input_15; [L369] SORT_14 var_231_arg_1 = var_230; [L370] SORT_1 var_231 = var_231_arg_0 == var_231_arg_1; [L371] SORT_14 var_257_arg_0 = input_15; [L372] SORT_14 var_257_arg_1 = var_256; [L373] SORT_1 var_257 = var_257_arg_0 == var_257_arg_1; [L374] SORT_1 var_258_arg_0 = var_231; [L375] SORT_1 var_258_arg_1 = var_257; [L376] SORT_6 var_258 = ((SORT_6)var_258_arg_0 << 1) | var_258_arg_1; [L377] var_258 = var_258 & mask_SORT_6 [L378] SORT_1 var_259_arg_0 = var_238; [L379] SORT_6 var_259_arg_1 = var_258; [L380] SORT_8 var_259 = ((SORT_8)var_259_arg_0 << 2) | var_259_arg_1; [L381] var_259 = var_259 & mask_SORT_8 [L382] SORT_1 var_260_arg_0 = var_254; [L383] SORT_8 var_260_arg_1 = var_259; [L384] SORT_105 var_260 = ((SORT_105)var_260_arg_0 << 3) | var_260_arg_1; [L385] var_260 = var_260 & mask_SORT_105 [L386] SORT_105 var_261_arg_0 = var_260; [L387] SORT_1 var_261 = var_261_arg_0 != 0; [L388] SORT_14 var_222_arg_0 = input_15; [L389] SORT_14 var_222_arg_1 = var_221; [L390] SORT_1 var_222 = var_222_arg_0 == var_222_arg_1; [L391] SORT_14 var_219_arg_0 = input_15; [L392] SORT_14 var_219_arg_1 = var_218; [L393] SORT_1 var_219 = var_219_arg_0 == var_219_arg_1; [L394] SORT_1 var_223_arg_0 = var_222; [L395] SORT_1 var_223_arg_1 = var_219; [L396] SORT_1 var_223 = var_223_arg_0 | var_223_arg_1; [L397] var_223 = var_223 & mask_SORT_1 [L398] SORT_14 var_216_arg_0 = input_15; [L399] SORT_14 var_216_arg_1 = var_117; [L400] SORT_1 var_216 = var_216_arg_0 == var_216_arg_1; [L401] SORT_14 var_225_arg_0 = input_15; [L402] SORT_14 var_225_arg_1 = var_119; [L403] SORT_1 var_225 = var_225_arg_0 == var_225_arg_1; [L404] SORT_1 var_226_arg_0 = var_216; [L405] SORT_1 var_226_arg_1 = var_225; [L406] SORT_6 var_226 = ((SORT_6)var_226_arg_0 << 1) | var_226_arg_1; [L407] var_226 = var_226 & mask_SORT_6 [L408] SORT_1 var_227_arg_0 = var_223; [L409] SORT_6 var_227_arg_1 = var_226; [L410] SORT_8 var_227 = ((SORT_8)var_227_arg_0 << 2) | var_227_arg_1; [L411] var_227 = var_227 & mask_SORT_8 [L412] SORT_8 var_228_arg_0 = var_227; [L413] SORT_1 var_228 = var_228_arg_0 != 0; [L414] SORT_14 var_213_arg_0 = input_15; [L415] SORT_14 var_213_arg_1 = var_123; [L416] SORT_1 var_213 = var_213_arg_0 == var_213_arg_1; [L417] SORT_14 var_211_arg_0 = input_15; [L418] SORT_14 var_211_arg_1 = var_121; [L419] SORT_1 var_211 = var_211_arg_0 == var_211_arg_1; [L420] SORT_1 var_214_arg_0 = var_213; [L421] SORT_1 var_214_arg_1 = var_211; [L422] SORT_1 var_214 = var_214_arg_0 | var_214_arg_1; [L423] var_214 = var_214 & mask_SORT_1 [L424] SORT_14 var_209_arg_0 = input_15; [L425] SORT_14 var_209_arg_1 = var_125; [L426] SORT_1 var_209 = var_209_arg_0 == var_209_arg_1; [L427] SORT_14 var_263_arg_0 = input_15; [L428] SORT_14 var_263_arg_1 = var_127; [L429] SORT_1 var_263 = var_263_arg_0 == var_263_arg_1; [L430] SORT_1 var_264_arg_0 = var_209; [L431] SORT_1 var_264_arg_1 = var_263; [L432] SORT_6 var_264 = ((SORT_6)var_264_arg_0 << 1) | var_264_arg_1; [L433] var_264 = var_264 & mask_SORT_6 [L434] SORT_1 var_265_arg_0 = var_214; [L435] SORT_6 var_265_arg_1 = var_264; [L436] SORT_8 var_265 = ((SORT_8)var_265_arg_0 << 2) | var_265_arg_1; [L437] var_265 = var_265 & mask_SORT_8 [L438] SORT_1 var_266_arg_0 = var_228; [L439] SORT_8 var_266_arg_1 = var_265; [L440] SORT_105 var_266 = ((SORT_105)var_266_arg_0 << 3) | var_266_arg_1; [L441] var_266 = var_266 & mask_SORT_105 [L442] SORT_1 var_267_arg_0 = var_261; [L443] SORT_105 var_267_arg_1 = var_266; [L444] SORT_14 var_267 = ((SORT_14)var_267_arg_0 << 4) | var_267_arg_1; [L445] var_267 = var_267 & mask_SORT_14 [L446] SORT_14 var_268_arg_0 = var_267; [L447] SORT_1 var_268 = var_268_arg_0 != 0; [L448] SORT_1 var_245_arg_0 = var_244; [L449] SORT_1 var_245_arg_1 = var_45; [L450] SORT_1 var_245_arg_2 = var_45; [L451] EXPR var_245_arg_0 ? var_245_arg_1 : var_245_arg_2 [L451] SORT_1 var_245 = var_245_arg_0 ? var_245_arg_1 : var_245_arg_2; [L452] SORT_1 var_242_arg_0 = var_241; [L453] SORT_1 var_242_arg_1 = var_45; [L454] SORT_1 var_242_arg_2 = var_45; [L455] EXPR var_242_arg_0 ? var_242_arg_1 : var_242_arg_2 [L455] SORT_1 var_242 = var_242_arg_0 ? var_242_arg_1 : var_242_arg_2; [L456] SORT_1 var_249_arg_0 = var_248; [L457] SORT_1 var_249_arg_1 = var_245; [L458] SORT_1 var_249_arg_2 = var_242; [L459] EXPR var_249_arg_0 ? var_249_arg_1 : var_249_arg_2 [L459] SORT_1 var_249 = var_249_arg_0 ? var_249_arg_1 : var_249_arg_2; [L460] SORT_1 var_235_arg_0 = var_234; [L461] SORT_1 var_235_arg_1 = var_45; [L462] SORT_1 var_235_arg_2 = var_45; [L463] EXPR var_235_arg_0 ? var_235_arg_1 : var_235_arg_2 [L463] SORT_1 var_235 = var_235_arg_0 ? var_235_arg_1 : var_235_arg_2; [L464] SORT_1 var_232_arg_0 = var_231; [L465] SORT_1 var_232_arg_1 = var_45; [L466] SORT_1 var_232_arg_2 = var_45; [L467] EXPR var_232_arg_0 ? var_232_arg_1 : var_232_arg_2 [L467] SORT_1 var_232 = var_232_arg_0 ? var_232_arg_1 : var_232_arg_2; [L468] SORT_1 var_239_arg_0 = var_238; [L469] SORT_1 var_239_arg_1 = var_235; [L470] SORT_1 var_239_arg_2 = var_232; [L471] EXPR var_239_arg_0 ? var_239_arg_1 : var_239_arg_2 [L471] SORT_1 var_239 = var_239_arg_0 ? var_239_arg_1 : var_239_arg_2; [L472] SORT_1 var_255_arg_0 = var_254; [L473] SORT_1 var_255_arg_1 = var_249; [L474] SORT_1 var_255_arg_2 = var_239; [L475] EXPR var_255_arg_0 ? var_255_arg_1 : var_255_arg_2 [L475] SORT_1 var_255 = var_255_arg_0 ? var_255_arg_1 : var_255_arg_2; [L476] SORT_1 var_220_arg_0 = var_219; [L477] SORT_1 var_220_arg_1 = var_45; [L478] SORT_1 var_220_arg_2 = var_45; [L479] EXPR var_220_arg_0 ? var_220_arg_1 : var_220_arg_2 [L479] SORT_1 var_220 = var_220_arg_0 ? var_220_arg_1 : var_220_arg_2; [L480] SORT_1 var_217_arg_0 = var_216; [L481] SORT_1 var_217_arg_1 = var_27; [L482] SORT_1 var_217_arg_2 = var_27; [L483] EXPR var_217_arg_0 ? var_217_arg_1 : var_217_arg_2 [L483] SORT_1 var_217 = var_217_arg_0 ? var_217_arg_1 : var_217_arg_2; [L484] SORT_1 var_224_arg_0 = var_223; [L485] SORT_1 var_224_arg_1 = var_220; [L486] SORT_1 var_224_arg_2 = var_217; [L487] EXPR var_224_arg_0 ? var_224_arg_1 : var_224_arg_2 [L487] SORT_1 var_224 = var_224_arg_0 ? var_224_arg_1 : var_224_arg_2; [L488] SORT_1 var_212_arg_0 = var_211; [L489] SORT_1 var_212_arg_1 = var_27; [L490] SORT_1 var_212_arg_2 = var_27; [L491] EXPR var_212_arg_0 ? var_212_arg_1 : var_212_arg_2 [L491] SORT_1 var_212 = var_212_arg_0 ? var_212_arg_1 : var_212_arg_2; [L492] SORT_1 var_210_arg_0 = var_209; [L493] SORT_1 var_210_arg_1 = var_27; [L494] SORT_1 var_210_arg_2 = var_27; [L495] EXPR var_210_arg_0 ? var_210_arg_1 : var_210_arg_2 [L495] SORT_1 var_210 = var_210_arg_0 ? var_210_arg_1 : var_210_arg_2; [L496] SORT_1 var_215_arg_0 = var_214; [L497] SORT_1 var_215_arg_1 = var_212; [L498] SORT_1 var_215_arg_2 = var_210; [L499] EXPR var_215_arg_0 ? var_215_arg_1 : var_215_arg_2 [L499] SORT_1 var_215 = var_215_arg_0 ? var_215_arg_1 : var_215_arg_2; [L500] SORT_1 var_229_arg_0 = var_228; [L501] SORT_1 var_229_arg_1 = var_224; [L502] SORT_1 var_229_arg_2 = var_215; [L503] EXPR var_229_arg_0 ? var_229_arg_1 : var_229_arg_2 [L503] SORT_1 var_229 = var_229_arg_0 ? var_229_arg_1 : var_229_arg_2; [L504] SORT_1 var_262_arg_0 = var_261; [L505] SORT_1 var_262_arg_1 = var_255; [L506] SORT_1 var_262_arg_2 = var_229; [L507] EXPR var_262_arg_0 ? var_262_arg_1 : var_262_arg_2 [L507] SORT_1 var_262 = var_262_arg_0 ? var_262_arg_1 : var_262_arg_2; [L508] SORT_14 var_194_arg_0 = input_15; [L509] SORT_14 var_194_arg_1 = var_131; [L510] SORT_1 var_194 = var_194_arg_0 == var_194_arg_1; [L511] SORT_14 var_192_arg_0 = input_15; [L512] SORT_14 var_192_arg_1 = var_129; [L513] SORT_1 var_192 = var_192_arg_0 == var_192_arg_1; [L514] SORT_1 var_195_arg_0 = var_194; [L515] SORT_1 var_195_arg_1 = var_192; [L516] SORT_1 var_195 = var_195_arg_0 | var_195_arg_1; [L517] var_195 = var_195 & mask_SORT_1 [L518] SORT_14 var_190_arg_0 = input_15; [L519] SORT_14 var_190_arg_1 = var_189; [L520] SORT_1 var_190 = var_190_arg_0 == var_190_arg_1; [L521] SORT_14 var_198_arg_0 = input_15; [L522] SORT_14 var_198_arg_1 = var_197; [L523] SORT_1 var_198 = var_198_arg_0 == var_198_arg_1; [L524] SORT_1 var_199_arg_0 = var_190; [L525] SORT_1 var_199_arg_1 = var_198; [L526] SORT_6 var_199 = ((SORT_6)var_199_arg_0 << 1) | var_199_arg_1; [L527] var_199 = var_199 & mask_SORT_6 [L528] SORT_1 var_200_arg_0 = var_195; [L529] SORT_6 var_200_arg_1 = var_199; [L530] SORT_8 var_200 = ((SORT_8)var_200_arg_0 << 2) | var_200_arg_1; [L531] var_200 = var_200 & mask_SORT_8 [L532] SORT_8 var_201_arg_0 = var_200; [L533] SORT_1 var_201 = var_201_arg_0 != 0; [L534] SORT_14 var_186_arg_0 = input_15; [L535] SORT_14 var_186_arg_1 = var_97; [L536] SORT_1 var_186 = var_186_arg_0 == var_186_arg_1; [L537] SORT_14 var_184_arg_0 = input_15; [L538] SORT_14 var_184_arg_1 = var_95; [L539] SORT_1 var_184 = var_184_arg_0 == var_184_arg_1; [L540] SORT_1 var_187_arg_0 = var_186; [L541] SORT_1 var_187_arg_1 = var_184; [L542] SORT_1 var_187 = var_187_arg_0 | var_187_arg_1; [L543] var_187 = var_187 & mask_SORT_1 [L544] SORT_14 var_182_arg_0 = input_15; [L545] SORT_14 var_182_arg_1 = var_101; [L546] SORT_1 var_182 = var_182_arg_0 == var_182_arg_1; [L547] SORT_14 var_203_arg_0 = input_15; [L548] SORT_14 var_203_arg_1 = var_133; [L549] SORT_1 var_203 = var_203_arg_0 == var_203_arg_1; [L550] SORT_1 var_204_arg_0 = var_182; [L551] SORT_1 var_204_arg_1 = var_203; [L552] SORT_6 var_204 = ((SORT_6)var_204_arg_0 << 1) | var_204_arg_1; [L553] var_204 = var_204 & mask_SORT_6 [L554] SORT_1 var_205_arg_0 = var_187; [L555] SORT_6 var_205_arg_1 = var_204; [L556] SORT_8 var_205 = ((SORT_8)var_205_arg_0 << 2) | var_205_arg_1; [L557] var_205 = var_205 & mask_SORT_8 [L558] SORT_1 var_206_arg_0 = var_201; [L559] SORT_8 var_206_arg_1 = var_205; [L560] SORT_105 var_206 = ((SORT_105)var_206_arg_0 << 3) | var_206_arg_1; [L561] var_206 = var_206 & mask_SORT_105 [L562] SORT_105 var_207_arg_0 = var_206; [L563] SORT_1 var_207 = var_207_arg_0 != 0; [L564] SORT_1 var_193_arg_0 = var_192; [L565] SORT_1 var_193_arg_1 = var_27; [L566] SORT_1 var_193_arg_2 = var_27; [L567] EXPR var_193_arg_0 ? var_193_arg_1 : var_193_arg_2 [L567] SORT_1 var_193 = var_193_arg_0 ? var_193_arg_1 : var_193_arg_2; [L568] SORT_1 var_191_arg_0 = var_190; [L569] SORT_1 var_191_arg_1 = var_45; [L570] SORT_1 var_191_arg_2 = var_45; [L571] EXPR var_191_arg_0 ? var_191_arg_1 : var_191_arg_2 [L571] SORT_1 var_191 = var_191_arg_0 ? var_191_arg_1 : var_191_arg_2; [L572] SORT_1 var_196_arg_0 = var_195; [L573] SORT_1 var_196_arg_1 = var_193; [L574] SORT_1 var_196_arg_2 = var_191; [L575] EXPR var_196_arg_0 ? var_196_arg_1 : var_196_arg_2 [L575] SORT_1 var_196 = var_196_arg_0 ? var_196_arg_1 : var_196_arg_2; [L576] SORT_1 var_185_arg_0 = var_184; [L577] SORT_1 var_185_arg_1 = var_27; [L578] SORT_1 var_185_arg_2 = var_27; [L579] EXPR var_185_arg_0 ? var_185_arg_1 : var_185_arg_2 [L579] SORT_1 var_185 = var_185_arg_0 ? var_185_arg_1 : var_185_arg_2; [L580] SORT_1 var_183_arg_0 = var_182; [L581] SORT_1 var_183_arg_1 = var_27; [L582] SORT_1 var_183_arg_2 = var_27; [L583] EXPR var_183_arg_0 ? var_183_arg_1 : var_183_arg_2 [L583] SORT_1 var_183 = var_183_arg_0 ? var_183_arg_1 : var_183_arg_2; [L584] SORT_1 var_188_arg_0 = var_187; [L585] SORT_1 var_188_arg_1 = var_185; [L586] SORT_1 var_188_arg_2 = var_183; [L587] EXPR var_188_arg_0 ? var_188_arg_1 : var_188_arg_2 [L587] SORT_1 var_188 = var_188_arg_0 ? var_188_arg_1 : var_188_arg_2; [L588] SORT_1 var_202_arg_0 = var_201; [L589] SORT_1 var_202_arg_1 = var_196; [L590] SORT_1 var_202_arg_2 = var_188; [L591] EXPR var_202_arg_0 ? var_202_arg_1 : var_202_arg_2 [L591] SORT_1 var_202 = var_202_arg_0 ? var_202_arg_1 : var_202_arg_2; [L592] SORT_14 var_174_arg_0 = input_15; [L593] SORT_14 var_174_arg_1 = var_135; [L594] SORT_1 var_174 = var_174_arg_0 == var_174_arg_1; [L595] SORT_14 var_172_arg_0 = input_15; [L596] SORT_14 var_172_arg_1 = var_171; [L597] SORT_1 var_172 = var_172_arg_0 == var_172_arg_1; [L598] SORT_1 var_175_arg_0 = var_174; [L599] SORT_1 var_175_arg_1 = var_172; [L600] SORT_1 var_175 = var_175_arg_0 | var_175_arg_1; [L601] var_175 = var_175 & mask_SORT_1 [L602] SORT_14 var_169_arg_0 = input_15; [L603] SORT_14 var_169_arg_1 = var_139; [L604] SORT_1 var_169 = var_169_arg_0 == var_169_arg_1; [L605] SORT_14 var_177_arg_0 = input_15; [L606] SORT_14 var_177_arg_1 = var_159; [L607] SORT_1 var_177 = var_177_arg_0 == var_177_arg_1; [L608] SORT_1 var_178_arg_0 = var_169; [L609] SORT_1 var_178_arg_1 = var_177; [L610] SORT_6 var_178 = ((SORT_6)var_178_arg_0 << 1) | var_178_arg_1; [L611] var_178 = var_178 & mask_SORT_6 [L612] SORT_1 var_179_arg_0 = var_175; [L613] SORT_6 var_179_arg_1 = var_178; [L614] SORT_8 var_179 = ((SORT_8)var_179_arg_0 << 2) | var_179_arg_1; [L615] var_179 = var_179 & mask_SORT_8 [L616] SORT_8 var_180_arg_0 = var_179; [L617] SORT_1 var_180 = var_180_arg_0 != 0; [L618] SORT_1 var_173_arg_0 = var_172; [L619] SORT_1 var_173_arg_1 = var_45; [L620] SORT_1 var_173_arg_2 = var_27; [L621] EXPR var_173_arg_0 ? var_173_arg_1 : var_173_arg_2 [L621] SORT_1 var_173 = var_173_arg_0 ? var_173_arg_1 : var_173_arg_2; [L622] SORT_1 var_170_arg_0 = var_169; [L623] SORT_1 var_170_arg_1 = var_27; [L624] SORT_1 var_170_arg_2 = var_27; [L625] EXPR var_170_arg_0 ? var_170_arg_1 : var_170_arg_2 [L625] SORT_1 var_170 = var_170_arg_0 ? var_170_arg_1 : var_170_arg_2; [L626] SORT_1 var_176_arg_0 = var_175; [L627] SORT_1 var_176_arg_1 = var_173; [L628] SORT_1 var_176_arg_2 = var_170; [L629] EXPR var_176_arg_0 ? var_176_arg_1 : var_176_arg_2 [L629] SORT_1 var_176 = var_176_arg_0 ? var_176_arg_1 : var_176_arg_2; [L630] SORT_14 var_166_arg_0 = input_15; [L631] SORT_14 var_166_arg_1 = var_99; [L632] SORT_1 var_166 = var_166_arg_0 == var_166_arg_1; [L633] SORT_14 var_164_arg_0 = input_15; [L634] SORT_14 var_164_arg_1 = var_137; [L635] SORT_1 var_164 = var_164_arg_0 == var_164_arg_1; [L636] SORT_1 var_167_arg_0 = var_166; [L637] SORT_1 var_167_arg_1 = var_164; [L638] SORT_1 var_167 = var_167_arg_0 | var_167_arg_1; [L639] var_167 = var_167 & mask_SORT_1 [L640] SORT_1 var_165_arg_0 = var_164; [L641] SORT_1 var_165_arg_1 = var_27; [L642] SORT_1 var_165_arg_2 = var_27; [L643] EXPR var_165_arg_0 ? var_165_arg_1 : var_165_arg_2 [L643] SORT_1 var_165 = var_165_arg_0 ? var_165_arg_1 : var_165_arg_2; [L644] SORT_14 var_162_arg_0 = input_15; [L645] SORT_14 var_162_arg_1 = var_161; [L646] SORT_1 var_162 = var_162_arg_0 == var_162_arg_1; [L647] SORT_1 var_163_arg_0 = var_162; [L648] SORT_1 var_163_arg_1 = var_45; [L649] SORT_1 var_163_arg_2 = var_45; [L650] EXPR var_163_arg_0 ? var_163_arg_1 : var_163_arg_2 [L650] SORT_1 var_163 = var_163_arg_0 ? var_163_arg_1 : var_163_arg_2; [L651] SORT_1 var_168_arg_0 = var_167; [L652] SORT_1 var_168_arg_1 = var_165; [L653] SORT_1 var_168_arg_2 = var_163; [L654] EXPR var_168_arg_0 ? var_168_arg_1 : var_168_arg_2 [L654] SORT_1 var_168 = var_168_arg_0 ? var_168_arg_1 : var_168_arg_2; [L655] SORT_1 var_181_arg_0 = var_180; [L656] SORT_1 var_181_arg_1 = var_176; [L657] SORT_1 var_181_arg_2 = var_168; [L658] EXPR var_181_arg_0 ? var_181_arg_1 : var_181_arg_2 [L658] SORT_1 var_181 = var_181_arg_0 ? var_181_arg_1 : var_181_arg_2; [L659] SORT_1 var_208_arg_0 = var_207; [L660] SORT_1 var_208_arg_1 = var_202; [L661] SORT_1 var_208_arg_2 = var_181; [L662] EXPR var_208_arg_0 ? var_208_arg_1 : var_208_arg_2 [L662] SORT_1 var_208 = var_208_arg_0 ? var_208_arg_1 : var_208_arg_2; [L663] SORT_1 var_269_arg_0 = var_268; [L664] SORT_1 var_269_arg_1 = var_262; [L665] SORT_1 var_269_arg_2 = var_208; [L666] EXPR var_269_arg_0 ? var_269_arg_1 : var_269_arg_2 [L666] SORT_1 var_269 = var_269_arg_0 ? var_269_arg_1 : var_269_arg_2; [L667] SORT_14 var_160_arg_0 = input_15; [L668] SORT_14 var_160_arg_1 = var_159; [L669] SORT_1 var_160 = var_160_arg_0 == var_160_arg_1; [L670] SORT_14 var_140_arg_0 = input_15; [L671] SORT_14 var_140_arg_1 = var_139; [L672] SORT_1 var_140 = var_140_arg_0 == var_140_arg_1; [L673] SORT_14 var_138_arg_0 = input_15; [L674] SORT_14 var_138_arg_1 = var_137; [L675] SORT_1 var_138 = var_138_arg_0 == var_138_arg_1; [L676] SORT_14 var_136_arg_0 = input_15; [L677] SORT_14 var_136_arg_1 = var_135; [L678] SORT_1 var_136 = var_136_arg_0 == var_136_arg_1; [L679] SORT_14 var_134_arg_0 = input_15; [L680] SORT_14 var_134_arg_1 = var_133; [L681] SORT_1 var_134 = var_134_arg_0 == var_134_arg_1; [L682] SORT_14 var_132_arg_0 = input_15; [L683] SORT_14 var_132_arg_1 = var_131; [L684] SORT_1 var_132 = var_132_arg_0 == var_132_arg_1; [L685] SORT_14 var_130_arg_0 = input_15; [L686] SORT_14 var_130_arg_1 = var_129; [L687] SORT_1 var_130 = var_130_arg_0 == var_130_arg_1; [L688] SORT_14 var_128_arg_0 = input_15; [L689] SORT_14 var_128_arg_1 = var_127; [L690] SORT_1 var_128 = var_128_arg_0 == var_128_arg_1; [L691] SORT_14 var_126_arg_0 = input_15; [L692] SORT_14 var_126_arg_1 = var_125; [L693] SORT_1 var_126 = var_126_arg_0 == var_126_arg_1; [L694] SORT_14 var_124_arg_0 = input_15; [L695] SORT_14 var_124_arg_1 = var_123; [L696] SORT_1 var_124 = var_124_arg_0 == var_124_arg_1; [L697] SORT_14 var_122_arg_0 = input_15; [L698] SORT_14 var_122_arg_1 = var_121; [L699] SORT_1 var_122 = var_122_arg_0 == var_122_arg_1; [L700] SORT_14 var_120_arg_0 = input_15; [L701] SORT_14 var_120_arg_1 = var_119; [L702] SORT_1 var_120 = var_120_arg_0 == var_120_arg_1; [L703] SORT_14 var_118_arg_0 = input_15; [L704] SORT_14 var_118_arg_1 = var_117; [L705] SORT_1 var_118 = var_118_arg_0 == var_118_arg_1; [L706] SORT_1 var_141_arg_0 = var_120; [L707] SORT_1 var_141_arg_1 = var_118; [L708] SORT_6 var_141 = ((SORT_6)var_141_arg_0 << 1) | var_141_arg_1; [L709] var_141 = var_141 & mask_SORT_6 [L710] SORT_1 var_142_arg_0 = var_122; [L711] SORT_6 var_142_arg_1 = var_141; [L712] SORT_8 var_142 = ((SORT_8)var_142_arg_0 << 2) | var_142_arg_1; [L713] var_142 = var_142 & mask_SORT_8 [L714] SORT_1 var_143_arg_0 = var_124; [L715] SORT_8 var_143_arg_1 = var_142; [L716] SORT_105 var_143 = ((SORT_105)var_143_arg_0 << 3) | var_143_arg_1; [L717] var_143 = var_143 & mask_SORT_105 [L718] SORT_1 var_144_arg_0 = var_126; [L719] SORT_105 var_144_arg_1 = var_143; [L720] SORT_14 var_144 = ((SORT_14)var_144_arg_0 << 4) | var_144_arg_1; [L721] var_144 = var_144 & mask_SORT_14 [L722] SORT_1 var_146_arg_0 = var_128; [L723] SORT_14 var_146_arg_1 = var_144; [L724] SORT_145 var_146 = ((SORT_145)var_146_arg_0 << 5) | var_146_arg_1; [L725] var_146 = var_146 & mask_SORT_145 [L726] SORT_1 var_148_arg_0 = var_130; [L727] SORT_145 var_148_arg_1 = var_146; [L728] SORT_147 var_148 = ((SORT_147)var_148_arg_0 << 6) | var_148_arg_1; [L729] var_148 = var_148 & mask_SORT_147 [L730] SORT_1 var_149_arg_0 = var_132; [L731] SORT_147 var_149_arg_1 = var_148; [L732] SORT_17 var_149 = ((SORT_17)var_149_arg_0 << 7) | var_149_arg_1; [L733] var_149 = var_149 & mask_SORT_17 [L734] SORT_1 var_151_arg_0 = var_134; [L735] SORT_17 var_151_arg_1 = var_149; [L736] SORT_150 var_151 = ((SORT_150)var_151_arg_0 << 8) | var_151_arg_1; [L737] var_151 = var_151 & mask_SORT_150 [L738] SORT_1 var_153_arg_0 = var_136; [L739] SORT_150 var_153_arg_1 = var_151; [L740] SORT_152 var_153 = ((SORT_152)var_153_arg_0 << 9) | var_153_arg_1; [L741] var_153 = var_153 & mask_SORT_152 [L742] SORT_1 var_155_arg_0 = var_138; [L743] SORT_152 var_155_arg_1 = var_153; [L744] SORT_154 var_155 = ((SORT_154)var_155_arg_0 << 10) | var_155_arg_1; [L745] var_155 = var_155 & mask_SORT_154 [L746] SORT_1 var_157_arg_0 = var_140; [L747] SORT_154 var_157_arg_1 = var_155; [L748] SORT_156 var_157 = ((SORT_156)var_157_arg_0 << 11) | var_157_arg_1; [L749] var_157 = var_157 & mask_SORT_156 [L750] SORT_156 var_158_arg_0 = var_157; [L751] SORT_1 var_158 = var_158_arg_0 != 0; [L752] SORT_1 var_270_arg_0 = var_160; [L753] SORT_1 var_270_arg_1 = var_158; [L754] SORT_6 var_270 = ((SORT_6)var_270_arg_0 << 1) | var_270_arg_1; [L755] var_270 = var_270 & mask_SORT_6 [L756] SORT_1 var_271_arg_0 = var_269; [L757] SORT_6 var_271_arg_1 = var_270; [L758] SORT_8 var_271 = ((SORT_8)var_271_arg_0 << 2) | var_271_arg_1; [L759] var_271 = var_271 & mask_SORT_8 [L760] SORT_8 var_272_arg_0 = var_271; [L761] SORT_1 var_272 = var_272_arg_0 != 0; [L762] SORT_1 var_86_arg_0 = var_85; [L763] SORT_1 var_86 = ~var_86_arg_0; [L764] var_86 = var_86 & mask_SORT_1 [L765] SORT_1 var_87_arg_0 = input_13; [L766] SORT_1 var_87_arg_1 = var_86; [L767] SORT_6 var_87 = ((SORT_6)var_87_arg_0 << 1) | var_87_arg_1; [L768] var_87 = var_87 & mask_SORT_6 [L769] SORT_6 var_88_arg_0 = var_87; [L770] SORT_1 var_88 = var_88_arg_0 == mask_SORT_6; [L771] SORT_1 var_273_arg_0 = var_272; [L772] SORT_1 var_273_arg_1 = var_88; [L773] SORT_6 var_273 = ((SORT_6)var_273_arg_0 << 1) | var_273_arg_1; [L774] var_273 = var_273 & mask_SORT_6 [L775] SORT_1 var_274_arg_0 = var_82; [L776] SORT_6 var_274_arg_1 = var_273; [L777] SORT_8 var_274 = ((SORT_8)var_274_arg_0 << 2) | var_274_arg_1; [L778] var_274 = var_274 & mask_SORT_8 [L779] SORT_8 var_275_arg_0 = var_274; [L780] SORT_1 var_275 = var_275_arg_0 == mask_SORT_8; [L781] SORT_1 var_114_arg_0 = input_13; [L782] SORT_1 var_114 = ~var_114_arg_0; [L783] SORT_1 var_112_arg_0 = input_13; [L784] SORT_1 var_112_arg_1 = var_85; [L785] SORT_6 var_112 = ((SORT_6)var_112_arg_0 << 1) | var_112_arg_1; [L786] var_112 = var_112 & mask_SORT_6 [L787] SORT_6 var_113_arg_0 = var_112; [L788] SORT_1 var_113 = var_113_arg_0 == mask_SORT_6; [L789] SORT_1 var_115_arg_0 = var_114; [L790] SORT_1 var_115_arg_1 = var_113; [L791] SORT_6 var_115 = ((SORT_6)var_115_arg_0 << 1) | var_115_arg_1; [L792] var_115 = var_115 & mask_SORT_6 [L793] SORT_6 var_116_arg_0 = var_115; [L794] SORT_1 var_116 = var_116_arg_0 != 0; [L795] SORT_1 var_276_arg_0 = var_275; [L796] SORT_1 var_276_arg_1 = var_116; [L797] SORT_6 var_276 = ((SORT_6)var_276_arg_0 << 1) | var_276_arg_1; [L798] var_276 = var_276 & mask_SORT_6 [L799] SORT_6 var_277_arg_0 = var_276; [L800] SORT_1 var_277 = var_277_arg_0 != 0; [L801] SORT_14 var_102_arg_0 = input_15; [L802] SORT_14 var_102_arg_1 = var_101; [L803] SORT_1 var_102 = var_102_arg_0 == var_102_arg_1; [L804] SORT_14 var_100_arg_0 = input_15; [L805] SORT_14 var_100_arg_1 = var_99; [L806] SORT_1 var_100 = var_100_arg_0 == var_100_arg_1; [L807] SORT_14 var_98_arg_0 = input_15; [L808] SORT_14 var_98_arg_1 = var_97; [L809] SORT_1 var_98 = var_98_arg_0 == var_98_arg_1; [L810] SORT_14 var_96_arg_0 = input_15; [L811] SORT_14 var_96_arg_1 = var_95; [L812] SORT_1 var_96 = var_96_arg_0 == var_96_arg_1; [L813] SORT_1 var_103_arg_0 = var_98; [L814] SORT_1 var_103_arg_1 = var_96; [L815] SORT_6 var_103 = ((SORT_6)var_103_arg_0 << 1) | var_103_arg_1; [L816] var_103 = var_103 & mask_SORT_6 [L817] SORT_1 var_104_arg_0 = var_100; [L818] SORT_6 var_104_arg_1 = var_103; [L819] SORT_8 var_104 = ((SORT_8)var_104_arg_0 << 2) | var_104_arg_1; [L820] var_104 = var_104 & mask_SORT_8 [L821] SORT_1 var_106_arg_0 = var_102; [L822] SORT_8 var_106_arg_1 = var_104; [L823] SORT_105 var_106 = ((SORT_105)var_106_arg_0 << 3) | var_106_arg_1; [L824] var_106 = var_106 & mask_SORT_105 [L825] SORT_105 var_107_arg_0 = var_106; [L826] SORT_1 var_107 = var_107_arg_0 != 0; [L827] SORT_1 var_108_arg_0 = var_107; [L828] SORT_1 var_108_arg_1 = var_88; [L829] SORT_6 var_108 = ((SORT_6)var_108_arg_0 << 1) | var_108_arg_1; [L830] var_108 = var_108 & mask_SORT_6 [L831] SORT_1 var_109_arg_0 = var_82; [L832] SORT_6 var_109_arg_1 = var_108; [L833] SORT_8 var_109 = ((SORT_8)var_109_arg_0 << 2) | var_109_arg_1; [L834] var_109 = var_109 & mask_SORT_8 [L835] SORT_8 var_110_arg_0 = var_109; [L836] SORT_1 var_110 = var_110_arg_0 == mask_SORT_8; [L837] SORT_1 var_76_arg_0 = var_75; [L838] SORT_1 var_76 = ~var_76_arg_0; [L839] SORT_1 var_92_arg_0 = var_76; [L840] SORT_1 var_92_arg_1 = var_73; [L841] SORT_6 var_92 = ((SORT_6)var_92_arg_0 << 1) | var_92_arg_1; [L842] var_92 = var_92 & mask_SORT_6 [L843] SORT_6 var_93_arg_0 = var_92; [L844] SORT_1 var_93 = var_93_arg_0 == mask_SORT_6; [L845] SORT_1 var_94_arg_0 = var_93; [L846] SORT_1 var_94_arg_1 = var_75; [L847] SORT_6 var_94 = ((SORT_6)var_94_arg_0 << 1) | var_94_arg_1; [L848] SORT_1 var_83_arg_0 = var_82; [L849] SORT_1 var_83 = ~var_83_arg_0; [L850] var_83 = var_83 & mask_SORT_1 [L851] SORT_1 var_89_arg_0 = var_88; [L852] SORT_1 var_89_arg_1 = var_83; [L853] SORT_6 var_89 = ((SORT_6)var_89_arg_0 << 1) | var_89_arg_1; [L854] var_89 = var_89 & mask_SORT_6 [L855] SORT_6 var_90_arg_0 = var_89; [L856] SORT_1 var_90 = var_90_arg_0 == mask_SORT_6; [L857] SORT_1 var_77_arg_0 = var_73; [L858] SORT_1 var_77_arg_1 = var_71; [L859] SORT_6 var_77 = ((SORT_6)var_77_arg_0 << 1) | var_77_arg_1; [L860] var_77 = var_77 & mask_SORT_6 [L861] SORT_1 var_78_arg_0 = var_76; [L862] SORT_6 var_78_arg_1 = var_77; [L863] SORT_8 var_78 = ((SORT_8)var_78_arg_0 << 2) | var_78_arg_1; [L864] var_78 = var_78 & mask_SORT_8 [L865] SORT_8 var_79_arg_0 = var_78; [L866] SORT_1 var_79 = var_79_arg_0 == mask_SORT_8; [L867] SORT_1 var_80_arg_0 = var_79; [L868] SORT_1 var_80_arg_1 = var_27; [L869] SORT_6 var_80 = ((SORT_6)var_80_arg_0 << 1) | var_80_arg_1; [L870] SORT_1 var_91_arg_0 = var_90; [L871] SORT_6 var_91_arg_1 = var_80; [L872] SORT_6 var_91_arg_2 = var_37; [L873] EXPR var_91_arg_0 ? var_91_arg_1 : var_91_arg_2 [L873] SORT_6 var_91 = var_91_arg_0 ? var_91_arg_1 : var_91_arg_2; [L874] SORT_1 var_111_arg_0 = var_110; [L875] SORT_6 var_111_arg_1 = var_94; [L876] SORT_6 var_111_arg_2 = var_91; [L877] EXPR var_111_arg_0 ? var_111_arg_1 : var_111_arg_2 [L877] SORT_6 var_111 = var_111_arg_0 ? var_111_arg_1 : var_111_arg_2; [L878] SORT_1 var_278_arg_0 = var_277; [L879] SORT_6 var_278_arg_1 = var_37; [L880] SORT_6 var_278_arg_2 = var_111; [L881] EXPR var_278_arg_0 ? var_278_arg_1 : var_278_arg_2 [L881] SORT_6 var_278 = var_278_arg_0 ? var_278_arg_1 : var_278_arg_2; [L882] var_278 = var_278 & mask_SORT_6 [L883] SORT_145 var_280_arg_0 = var_279; [L884] SORT_6 var_280_arg_1 = var_278; [L885] SORT_17 var_280 = ((SORT_17)var_280_arg_0 << 2) | var_280_arg_1; [L886] SORT_1 var_40_arg_0 = state_34; [L887] SORT_6 var_40_arg_1 = state_38; [L888] SORT_6 var_40_arg_2 = input_19; [L889] EXPR var_40_arg_0 ? var_40_arg_1 : var_40_arg_2 [L889] SORT_6 var_40 = var_40_arg_0 ? var_40_arg_1 : var_40_arg_2; [L890] SORT_6 var_43_arg_0 = var_40; [L891] SORT_1 var_43 = var_43_arg_0 >> 0; [L892] var_43 = var_43 & mask_SORT_1 [L893] SORT_6 var_41_arg_0 = var_40; [L894] SORT_1 var_41 = var_41_arg_0 >> 1; [L895] var_41 = var_41 & mask_SORT_1 [L896] SORT_1 var_36_arg_0 = state_34; [L897] SORT_17 var_36_arg_1 = state_32; [L898] SORT_17 var_36_arg_2 = input_18; [L899] EXPR var_36_arg_0 ? var_36_arg_1 : var_36_arg_2 [L899] SORT_17 var_36 = var_36_arg_0 ? var_36_arg_1 : var_36_arg_2; [L900] SORT_1 var_42_arg_0 = var_41; [L901] SORT_17 var_42_arg_1 = var_36; [L902] SORT_17 var_42_arg_2 = var_31; [L903] EXPR var_42_arg_0 ? var_42_arg_1 : var_42_arg_2 [L903] SORT_17 var_42 = var_42_arg_0 ? var_42_arg_1 : var_42_arg_2; [L904] SORT_1 var_44_arg_0 = var_43; [L905] SORT_17 var_44_arg_1 = var_31; [L906] SORT_17 var_44_arg_2 = var_42; [L907] EXPR var_44_arg_0 ? var_44_arg_1 : var_44_arg_2 [L907] SORT_17 var_44 = var_44_arg_0 ? var_44_arg_1 : var_44_arg_2; [L908] SORT_1 var_298_arg_0 = var_297; [L909] SORT_17 var_298_arg_1 = var_280; [L910] SORT_17 var_298_arg_2 = var_44; [L911] EXPR var_298_arg_0 ? var_298_arg_1 : var_298_arg_2 [L911] SORT_17 var_298 = var_298_arg_0 ? var_298_arg_1 : var_298_arg_2; [L912] var_298 = var_298 & mask_SORT_17 [L913] SORT_17 var_305_arg_0 = var_298; [L914] SORT_17 var_305_arg_1 = var_31; [L915] SORT_1 var_305 = var_305_arg_0 == var_305_arg_1; [L916] SORT_1 var_306_arg_0 = var_305; [L917] SORT_1 var_306 = ~var_306_arg_0; [L918] SORT_17 var_303_arg_0 = var_298; [L919] SORT_17 var_303_arg_1 = var_302; [L920] SORT_1 var_303 = var_303_arg_0 == var_303_arg_1; [L921] SORT_1 var_304_arg_0 = var_303; [L922] SORT_1 var_304 = ~var_304_arg_0; [L923] var_304 = var_304 & mask_SORT_1 [L924] SORT_1 var_307_arg_0 = var_306; [L925] SORT_1 var_307_arg_1 = var_304; [L926] SORT_6 var_307 = ((SORT_6)var_307_arg_0 << 1) | var_307_arg_1; [L927] var_307 = var_307 & mask_SORT_6 [L928] SORT_6 var_308_arg_0 = var_307; [L929] SORT_1 var_308 = var_308_arg_0 == mask_SORT_6; [L930] SORT_17 var_300_arg_0 = var_298; [L931] SORT_17 var_300_arg_1 = var_299; [L932] SORT_1 var_300 = var_300_arg_0 == var_300_arg_1; [L933] SORT_1 var_301_arg_0 = var_300; [L934] SORT_1 var_301 = ~var_301_arg_0; [L935] var_301 = var_301 & mask_SORT_1 [L936] SORT_1 var_309_arg_0 = var_308; [L937] SORT_1 var_309_arg_1 = var_301; [L938] SORT_6 var_309 = ((SORT_6)var_309_arg_0 << 1) | var_309_arg_1; [L939] var_309 = var_309 & mask_SORT_6 [L940] SORT_6 var_310_arg_0 = var_309; [L941] SORT_1 var_310 = var_310_arg_0 == mask_SORT_6; [L942] SORT_1 var_313_arg_0 = state_34; [L943] SORT_17 var_313_arg_1 = state_311; [L944] SORT_17 var_313_arg_2 = input_18; [L945] EXPR var_313_arg_0 ? var_313_arg_1 : var_313_arg_2 [L945] SORT_17 var_313 = var_313_arg_0 ? var_313_arg_1 : var_313_arg_2; [L946] SORT_1 var_314_arg_0 = var_41; [L947] SORT_17 var_314_arg_1 = var_313; [L948] SORT_17 var_314_arg_2 = var_31; [L949] EXPR var_314_arg_0 ? var_314_arg_1 : var_314_arg_2 [L949] SORT_17 var_314 = var_314_arg_0 ? var_314_arg_1 : var_314_arg_2; [L950] SORT_1 var_315_arg_0 = var_43; [L951] SORT_17 var_315_arg_1 = var_31; [L952] SORT_17 var_315_arg_2 = var_314; [L953] EXPR var_315_arg_0 ? var_315_arg_1 : var_315_arg_2 [L953] SORT_17 var_315 = var_315_arg_0 ? var_315_arg_1 : var_315_arg_2; [L954] SORT_1 var_316_arg_0 = var_297; [L955] SORT_17 var_316_arg_1 = var_280; [L956] SORT_17 var_316_arg_2 = var_315; [L957] EXPR var_316_arg_0 ? var_316_arg_1 : var_316_arg_2 [L957] SORT_17 var_316 = var_316_arg_0 ? var_316_arg_1 : var_316_arg_2; [L958] var_316 = var_316 & mask_SORT_17 [L959] SORT_17 var_317_arg_0 = var_316; [L960] SORT_17 var_317_arg_1 = var_299; [L961] SORT_1 var_317 = var_317_arg_0 == var_317_arg_1; [L962] SORT_1 var_318_arg_0 = var_317; [L963] SORT_1 var_318 = ~var_318_arg_0; [L964] var_318 = var_318 & mask_SORT_1 [L965] SORT_1 var_319_arg_0 = var_308; [L966] SORT_1 var_319_arg_1 = var_318; [L967] SORT_6 var_319 = ((SORT_6)var_319_arg_0 << 1) | var_319_arg_1; [L968] var_319 = var_319 & mask_SORT_6 [L969] SORT_6 var_320_arg_0 = var_319; [L970] SORT_1 var_320 = var_320_arg_0 == mask_SORT_6; [L971] SORT_1 var_321_arg_0 = var_310; [L972] SORT_1 var_321_arg_1 = var_320; [L973] SORT_1 var_321 = var_321_arg_0 == var_321_arg_1; [L974] SORT_1 var_322_arg_0 = var_30; [L975] SORT_1 var_322_arg_1 = var_321; [L976] SORT_1 var_322 = var_322_arg_0 | var_322_arg_1; [L977] SORT_1 var_325_arg_0 = var_322; [L978] SORT_1 var_325 = ~var_325_arg_0; [L979] SORT_1 var_326_arg_0 = var_45; [L980] SORT_1 var_326_arg_1 = var_325; [L981] SORT_1 var_326 = var_326_arg_0 & var_326_arg_1; [L982] var_326 = var_326 & mask_SORT_1 [L983] SORT_1 bad_327_arg_0 = var_326; [L984] CALL __VERIFIER_assert(!(bad_327_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 74.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 42.7s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 04:07:29,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal8.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash fb386b526e08355011f5cf90a74b471f6ddeec6b312cbb262635a286cb1d85ca --- 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-5e519f3 [2022-11-03 04:07:32,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:07:32,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:07:32,597 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:07:32,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:07:32,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:07:32,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:07:32,611 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:07:32,618 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:07:32,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:07:32,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:07:32,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:07:32,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:07:32,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:07:32,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:07:32,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:07:32,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:07:32,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:07:32,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:07:32,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:07:32,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:07:32,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:07:32,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:07:32,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:07:32,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:07:32,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:07:32,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:07:32,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:07:32,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:07:32,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:07:32,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:07:32,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:07:32,649 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:07:32,650 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:07:32,651 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:07:32,651 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:07:32,652 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:07:32,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:07:32,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:07:32,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:07:32,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:07:32,656 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 04:07:32,692 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:07:32,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:07:32,693 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:07:32,693 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:07:32,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:07:32,695 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:07:32,695 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:07:32,695 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:07:32,695 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:07:32,696 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:07:32,696 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:07:32,696 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:07:32,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:07:32,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:07:32,698 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:07:32,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:07:32,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:07:32,698 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 04:07:32,699 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 04:07:32,699 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 04:07:32,699 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:07:32,699 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:07:32,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:07:32,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:07:32,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 04:07:32,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:07:32,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:07:32,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:07:32,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:07:32,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:07:32,702 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 04:07:32,707 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 04:07:32,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:07:32,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:07:32,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 04:07:32,708 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fb386b526e08355011f5cf90a74b471f6ddeec6b312cbb262635a286cb1d85ca [2022-11-03 04:07:33,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:07:33,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:07:33,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:07:33,234 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:07:33,235 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:07:33,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal8.c [2022-11-03 04:07:33,331 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/data/d4fc2b5b1/bfa7072a58d54200a054d8d1a130bf6e/FLAGb7af93b63 [2022-11-03 04:07:34,116 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:07:34,116 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal8.c [2022-11-03 04:07:34,131 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/data/d4fc2b5b1/bfa7072a58d54200a054d8d1a130bf6e/FLAGb7af93b63 [2022-11-03 04:07:34,371 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/data/d4fc2b5b1/bfa7072a58d54200a054d8d1a130bf6e [2022-11-03 04:07:34,374 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:07:34,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:07:34,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:07:34,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:07:34,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:07:34,384 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:07:34" (1/1) ... [2022-11-03 04:07:34,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b76857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:34, skipping insertion in model container [2022-11-03 04:07:34,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:07:34" (1/1) ... [2022-11-03 04:07:34,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:07:34,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:07:34,739 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal8.c[1107,1120] [2022-11-03 04:07:35,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:07:35,228 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:07:35,242 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal8.c[1107,1120] [2022-11-03 04:07:35,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:07:35,483 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:07:35,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:35 WrapperNode [2022-11-03 04:07:35,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:07:35,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:07:35,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:07:35,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:07:35,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:35" (1/1) ... [2022-11-03 04:07:35,559 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:35" (1/1) ... [2022-11-03 04:07:35,675 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1846 [2022-11-03 04:07:35,676 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:07:35,677 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:07:35,677 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:07:35,677 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:07:35,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:35" (1/1) ... [2022-11-03 04:07:35,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:35" (1/1) ... [2022-11-03 04:07:35,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:35" (1/1) ... [2022-11-03 04:07:35,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:35" (1/1) ... [2022-11-03 04:07:35,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:35" (1/1) ... [2022-11-03 04:07:35,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:35" (1/1) ... [2022-11-03 04:07:35,766 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:35" (1/1) ... [2022-11-03 04:07:35,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:35" (1/1) ... [2022-11-03 04:07:35,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:07:35,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:07:35,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:07:35,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:07:35,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:35" (1/1) ... [2022-11-03 04:07:35,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:07:35,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:07:35,888 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:07:35,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:07:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:07:35,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:07:36,390 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:07:36,393 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:07:38,407 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:07:38,424 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:07:38,424 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:07:38,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:07:38 BoogieIcfgContainer [2022-11-03 04:07:38,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:07:38,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:07:38,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:07:38,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:07:38,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:07:34" (1/3) ... [2022-11-03 04:07:38,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c001aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:07:38, skipping insertion in model container [2022-11-03 04:07:38,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:07:35" (2/3) ... [2022-11-03 04:07:38,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c001aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:07:38, skipping insertion in model container [2022-11-03 04:07:38,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:07:38" (3/3) ... [2022-11-03 04:07:38,441 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal8.c [2022-11-03 04:07:38,463 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:07:38,463 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:07:38,567 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:07:38,577 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=FINITE_AUTOMATA, 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;@833fe57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:07:38,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:07:38,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 207 states have (on average 1.497584541062802) internal successors, (310), 208 states have internal predecessors, (310), 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) [2022-11-03 04:07:38,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:07:38,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:38,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:38,607 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:38,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:38,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1747459213, now seen corresponding path program 1 times [2022-11-03 04:07:38,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:07:38,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825198485] [2022-11-03 04:07:38,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:38,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:07:38,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:07:38,646 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:07:38,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 04:07:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:39,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:07:39,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:39,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:39,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:07:39,887 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:07:39,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825198485] [2022-11-03 04:07:39,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825198485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:39,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:39,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:07:39,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720378747] [2022-11-03 04:07:39,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:39,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:07:39,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:07:39,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:07:39,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:07:39,951 INFO L87 Difference]: Start difference. First operand has 209 states, 207 states have (on average 1.497584541062802) internal successors, (310), 208 states have internal predecessors, (310), 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 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:07:40,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:40,366 INFO L93 Difference]: Finished difference Result 818 states and 1225 transitions. [2022-11-03 04:07:40,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:07:40,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:07:40,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:40,387 INFO L225 Difference]: With dead ends: 818 [2022-11-03 04:07:40,388 INFO L226 Difference]: Without dead ends: 611 [2022-11-03 04:07:40,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:07:40,396 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 2092 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2092 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:40,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2092 Valid, 1193 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:07:40,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-11-03 04:07:40,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 207. [2022-11-03 04:07:40,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4854368932038835) internal successors, (306), 206 states have internal predecessors, (306), 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) [2022-11-03 04:07:40,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 306 transitions. [2022-11-03 04:07:40,464 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 306 transitions. Word has length 109 [2022-11-03 04:07:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:40,467 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 306 transitions. [2022-11-03 04:07:40,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:07:40,469 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 306 transitions. [2022-11-03 04:07:40,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:07:40,475 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:40,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:40,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 04:07:40,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:07:40,697 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:40,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:40,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1158214069, now seen corresponding path program 1 times [2022-11-03 04:07:40,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:07:40,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131790275] [2022-11-03 04:07:40,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:40,701 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:07:40,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:07:40,704 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:07:40,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 04:07:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:41,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:07:41,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:41,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:07:41,704 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:07:41,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131790275] [2022-11-03 04:07:41,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131790275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:41,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:41,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:07:41,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799876639] [2022-11-03 04:07:41,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:41,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:07:41,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:07:41,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:07:41,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:07:41,709 INFO L87 Difference]: Start difference. First operand 207 states and 306 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:07:41,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:41,990 INFO L93 Difference]: Finished difference Result 820 states and 1214 transitions. [2022-11-03 04:07:41,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:07:41,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:07:41,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:41,995 INFO L225 Difference]: With dead ends: 820 [2022-11-03 04:07:41,995 INFO L226 Difference]: Without dead ends: 615 [2022-11-03 04:07:41,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:07:41,999 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 2084 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:42,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2084 Valid, 1195 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:07:42,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-11-03 04:07:42,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 211. [2022-11-03 04:07:42,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.480952380952381) internal successors, (311), 210 states have internal predecessors, (311), 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) [2022-11-03 04:07:42,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 311 transitions. [2022-11-03 04:07:42,018 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 311 transitions. Word has length 109 [2022-11-03 04:07:42,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:42,018 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 311 transitions. [2022-11-03 04:07:42,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:07:42,019 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 311 transitions. [2022-11-03 04:07:42,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:07:42,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:42,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:42,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 04:07:42,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:07:42,238 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:42,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:42,238 INFO L85 PathProgramCache]: Analyzing trace with hash 739282697, now seen corresponding path program 1 times [2022-11-03 04:07:42,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:07:42,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102377667] [2022-11-03 04:07:42,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:42,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:07:42,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:07:42,243 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:07:42,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 04:07:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:42,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:07:42,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:43,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:43,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:07:43,128 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:07:43,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102377667] [2022-11-03 04:07:43,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102377667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:43,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:43,129 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:07:43,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116768298] [2022-11-03 04:07:43,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:43,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:07:43,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:07:43,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:07:43,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:07:43,132 INFO L87 Difference]: Start difference. First operand 211 states and 311 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:07:43,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:43,402 INFO L93 Difference]: Finished difference Result 826 states and 1220 transitions. [2022-11-03 04:07:43,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:07:43,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:07:43,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:43,406 INFO L225 Difference]: With dead ends: 826 [2022-11-03 04:07:43,406 INFO L226 Difference]: Without dead ends: 617 [2022-11-03 04:07:43,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:07:43,408 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 2078 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:43,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2078 Valid, 1197 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:07:43,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-11-03 04:07:43,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 213. [2022-11-03 04:07:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.4764150943396226) internal successors, (313), 212 states have internal predecessors, (313), 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) [2022-11-03 04:07:43,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 313 transitions. [2022-11-03 04:07:43,423 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 313 transitions. Word has length 109 [2022-11-03 04:07:43,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:43,424 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 313 transitions. [2022-11-03 04:07:43,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:07:43,425 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 313 transitions. [2022-11-03 04:07:43,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:07:43,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:43,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:43,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 04:07:43,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:07:43,651 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:43,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:43,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1167120569, now seen corresponding path program 1 times [2022-11-03 04:07:43,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:07:43,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032271201] [2022-11-03 04:07:43,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:43,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:07:43,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:07:43,658 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:07:43,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 04:07:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:44,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:07:44,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:44,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:44,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:07:44,656 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:07:44,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032271201] [2022-11-03 04:07:44,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032271201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:44,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:44,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:07:44,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320384125] [2022-11-03 04:07:44,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:44,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:07:44,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:07:44,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:07:44,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:07:44,660 INFO L87 Difference]: Start difference. First operand 213 states and 313 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:07:45,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:45,559 INFO L93 Difference]: Finished difference Result 841 states and 1238 transitions. [2022-11-03 04:07:45,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 04:07:45,560 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 109 [2022-11-03 04:07:45,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:45,563 INFO L225 Difference]: With dead ends: 841 [2022-11-03 04:07:45,563 INFO L226 Difference]: Without dead ends: 630 [2022-11-03 04:07:45,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:07:45,565 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 2388 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:45,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2388 Valid, 1698 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 04:07:45,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2022-11-03 04:07:45,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 215. [2022-11-03 04:07:45,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.47196261682243) internal successors, (315), 214 states have internal predecessors, (315), 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) [2022-11-03 04:07:45,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 315 transitions. [2022-11-03 04:07:45,579 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 315 transitions. Word has length 109 [2022-11-03 04:07:45,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:45,580 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 315 transitions. [2022-11-03 04:07:45,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:07:45,580 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 315 transitions. [2022-11-03 04:07:45,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:07:45,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:45,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:45,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 04:07:45,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:07:45,809 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:45,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:45,809 INFO L85 PathProgramCache]: Analyzing trace with hash 2071115525, now seen corresponding path program 1 times [2022-11-03 04:07:45,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:07:45,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972175285] [2022-11-03 04:07:45,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:45,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:07:45,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:07:45,812 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:07:45,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 04:07:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:46,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 04:07:46,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:46,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:46,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:07:46,787 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:07:46,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972175285] [2022-11-03 04:07:46,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972175285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:46,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:46,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 04:07:46,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604513547] [2022-11-03 04:07:46,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:46,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 04:07:46,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:07:46,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 04:07:46,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-03 04:07:46,789 INFO L87 Difference]: Start difference. First operand 215 states and 315 transitions. Second operand has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 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) [2022-11-03 04:07:48,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:48,388 INFO L93 Difference]: Finished difference Result 1083 states and 1580 transitions. [2022-11-03 04:07:48,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 04:07:48,390 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 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 109 [2022-11-03 04:07:48,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:48,393 INFO L225 Difference]: With dead ends: 1083 [2022-11-03 04:07:48,393 INFO L226 Difference]: Without dead ends: 870 [2022-11-03 04:07:48,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=384, Invalid=1022, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 04:07:48,395 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 5593 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5593 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:48,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5593 Valid, 2545 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 04:07:48,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2022-11-03 04:07:48,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 225. [2022-11-03 04:07:48,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.4553571428571428) internal successors, (326), 224 states have internal predecessors, (326), 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) [2022-11-03 04:07:48,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 326 transitions. [2022-11-03 04:07:48,410 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 326 transitions. Word has length 109 [2022-11-03 04:07:48,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:48,410 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 326 transitions. [2022-11-03 04:07:48,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.083333333333334) internal successors, (109), 12 states have internal predecessors, (109), 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) [2022-11-03 04:07:48,411 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 326 transitions. [2022-11-03 04:07:48,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:07:48,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:48,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:48,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 04:07:48,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:07:48,636 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:48,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:48,637 INFO L85 PathProgramCache]: Analyzing trace with hash 2099615815, now seen corresponding path program 1 times [2022-11-03 04:07:48,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:07:48,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873597763] [2022-11-03 04:07:48,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:48,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:07:48,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:07:48,639 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:07:48,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 04:07:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:49,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 04:07:49,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:49,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:49,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:07:49,971 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:07:49,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873597763] [2022-11-03 04:07:49,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873597763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:49,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:49,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:07:49,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691918751] [2022-11-03 04:07:49,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:49,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:07:49,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:07:49,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:07:49,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:07:49,974 INFO L87 Difference]: Start difference. First operand 225 states and 326 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:07:50,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:50,609 INFO L93 Difference]: Finished difference Result 868 states and 1265 transitions. [2022-11-03 04:07:50,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:07:50,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:07:50,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:50,613 INFO L225 Difference]: With dead ends: 868 [2022-11-03 04:07:50,613 INFO L226 Difference]: Without dead ends: 645 [2022-11-03 04:07:50,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:07:50,615 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 2062 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:50,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2062 Valid, 1155 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:07:50,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-11-03 04:07:50,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 231. [2022-11-03 04:07:50,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.4521739130434783) internal successors, (334), 230 states have internal predecessors, (334), 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) [2022-11-03 04:07:50,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 334 transitions. [2022-11-03 04:07:50,630 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 334 transitions. Word has length 109 [2022-11-03 04:07:50,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:50,631 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 334 transitions. [2022-11-03 04:07:50,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:07:50,631 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 334 transitions. [2022-11-03 04:07:50,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:07:50,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:50,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:50,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 04:07:50,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:07:50,847 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:50,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:50,847 INFO L85 PathProgramCache]: Analyzing trace with hash -318288251, now seen corresponding path program 1 times [2022-11-03 04:07:50,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:07:50,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254789367] [2022-11-03 04:07:50,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:50,849 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:07:50,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:07:50,854 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:07:50,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 04:07:51,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:51,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:07:51,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:51,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:51,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:07:51,713 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:07:51,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254789367] [2022-11-03 04:07:51,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254789367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:51,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:51,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:07:51,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110170867] [2022-11-03 04:07:51,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:51,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:07:51,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:07:51,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:07:51,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:07:51,717 INFO L87 Difference]: Start difference. First operand 231 states and 334 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:07:52,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:52,031 INFO L93 Difference]: Finished difference Result 962 states and 1385 transitions. [2022-11-03 04:07:52,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:07:52,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:07:52,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:52,035 INFO L225 Difference]: With dead ends: 962 [2022-11-03 04:07:52,035 INFO L226 Difference]: Without dead ends: 733 [2022-11-03 04:07:52,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:07:52,037 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 2047 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2047 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:52,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2047 Valid, 1301 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:07:52,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-03 04:07:52,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 233. [2022-11-03 04:07:52,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.4482758620689655) internal successors, (336), 232 states have internal predecessors, (336), 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) [2022-11-03 04:07:52,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 336 transitions. [2022-11-03 04:07:52,050 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 336 transitions. Word has length 109 [2022-11-03 04:07:52,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:52,051 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 336 transitions. [2022-11-03 04:07:52,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:07:52,051 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 336 transitions. [2022-11-03 04:07:52,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:07:52,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:52,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:52,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 04:07:52,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:07:52,274 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:52,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:52,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2018104259, now seen corresponding path program 1 times [2022-11-03 04:07:52,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:07:52,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264684679] [2022-11-03 04:07:52,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:52,276 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:07:52,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:07:52,278 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:07:52,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 04:07:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:52,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:07:52,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:53,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:53,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:07:53,108 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:07:53,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264684679] [2022-11-03 04:07:53,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264684679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:53,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:53,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:07:53,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881346913] [2022-11-03 04:07:53,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:53,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:07:53,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:07:53,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:07:53,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:07:53,111 INFO L87 Difference]: Start difference. First operand 233 states and 336 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:07:53,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:53,374 INFO L93 Difference]: Finished difference Result 968 states and 1391 transitions. [2022-11-03 04:07:53,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:07:53,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:07:53,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:53,378 INFO L225 Difference]: With dead ends: 968 [2022-11-03 04:07:53,378 INFO L226 Difference]: Without dead ends: 737 [2022-11-03 04:07:53,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:07:53,380 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 2039 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2039 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:53,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2039 Valid, 1307 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:07:53,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-11-03 04:07:53,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 237. [2022-11-03 04:07:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.444915254237288) internal successors, (341), 236 states have internal predecessors, (341), 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) [2022-11-03 04:07:53,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 341 transitions. [2022-11-03 04:07:53,406 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 341 transitions. Word has length 109 [2022-11-03 04:07:53,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:53,408 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 341 transitions. [2022-11-03 04:07:53,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:07:53,408 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 341 transitions. [2022-11-03 04:07:53,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:07:53,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:53,410 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:53,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 04:07:53,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:07:53,622 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:53,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:53,622 INFO L85 PathProgramCache]: Analyzing trace with hash -710105087, now seen corresponding path program 1 times [2022-11-03 04:07:53,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:07:53,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869648311] [2022-11-03 04:07:53,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:53,624 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:07:53,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:07:53,626 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:07:53,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 04:07:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:54,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:07:54,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:54,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:07:54,382 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:07:54,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869648311] [2022-11-03 04:07:54,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869648311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:54,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:54,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:07:54,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012585887] [2022-11-03 04:07:54,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:54,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:07:54,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:07:54,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:07:54,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:07:54,385 INFO L87 Difference]: Start difference. First operand 237 states and 341 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:07:54,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:54,665 INFO L93 Difference]: Finished difference Result 974 states and 1397 transitions. [2022-11-03 04:07:54,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:07:54,666 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:07:54,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:54,669 INFO L225 Difference]: With dead ends: 974 [2022-11-03 04:07:54,669 INFO L226 Difference]: Without dead ends: 739 [2022-11-03 04:07:54,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:07:54,671 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 2033 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:54,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2033 Valid, 1310 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:07:54,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-11-03 04:07:54,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 239. [2022-11-03 04:07:54,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.4411764705882353) internal successors, (343), 238 states have internal predecessors, (343), 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) [2022-11-03 04:07:54,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 343 transitions. [2022-11-03 04:07:54,683 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 343 transitions. Word has length 109 [2022-11-03 04:07:54,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:54,684 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 343 transitions. [2022-11-03 04:07:54,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:07:54,684 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 343 transitions. [2022-11-03 04:07:54,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:07:54,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:54,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:54,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 04:07:54,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:07:54,899 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:54,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:54,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1852607553, now seen corresponding path program 1 times [2022-11-03 04:07:54,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:07:54,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564480296] [2022-11-03 04:07:54,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:54,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:07:54,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:07:54,902 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:07:54,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 04:07:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:55,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:07:55,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:55,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:55,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:07:55,766 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:07:55,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564480296] [2022-11-03 04:07:55,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564480296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:55,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:55,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:07:55,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018930715] [2022-11-03 04:07:55,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:55,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:07:55,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:07:55,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:07:55,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:07:55,769 INFO L87 Difference]: Start difference. First operand 239 states and 343 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:07:56,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:56,067 INFO L93 Difference]: Finished difference Result 982 states and 1406 transitions. [2022-11-03 04:07:56,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:07:56,068 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:07:56,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:56,071 INFO L225 Difference]: With dead ends: 982 [2022-11-03 04:07:56,071 INFO L226 Difference]: Without dead ends: 745 [2022-11-03 04:07:56,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:07:56,074 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 2023 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2023 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:56,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2023 Valid, 1319 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:07:56,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-11-03 04:07:56,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 245. [2022-11-03 04:07:56,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.4385245901639345) internal successors, (351), 244 states have internal predecessors, (351), 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) [2022-11-03 04:07:56,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 351 transitions. [2022-11-03 04:07:56,089 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 351 transitions. Word has length 109 [2022-11-03 04:07:56,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:56,090 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 351 transitions. [2022-11-03 04:07:56,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:07:56,090 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 351 transitions. [2022-11-03 04:07:56,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:07:56,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:56,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:56,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 04:07:56,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:07:56,313 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:56,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:56,314 INFO L85 PathProgramCache]: Analyzing trace with hash -965384707, now seen corresponding path program 1 times [2022-11-03 04:07:56,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:07:56,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045369078] [2022-11-03 04:07:56,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:56,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:07:56,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:07:56,316 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:07:56,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 04:07:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:56,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:07:56,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:57,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:57,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:07:57,134 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:07:57,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045369078] [2022-11-03 04:07:57,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045369078] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:57,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:57,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:07:57,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935427956] [2022-11-03 04:07:57,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:57,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:07:57,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:07:57,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:07:57,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:07:57,137 INFO L87 Difference]: Start difference. First operand 245 states and 351 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:07:57,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:57,482 INFO L93 Difference]: Finished difference Result 990 states and 1415 transitions. [2022-11-03 04:07:57,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:07:57,482 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:07:57,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:57,485 INFO L225 Difference]: With dead ends: 990 [2022-11-03 04:07:57,485 INFO L226 Difference]: Without dead ends: 747 [2022-11-03 04:07:57,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:07:57,487 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 2017 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2017 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:57,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2017 Valid, 1318 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:07:57,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-11-03 04:07:57,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 247. [2022-11-03 04:07:57,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.434959349593496) internal successors, (353), 246 states have internal predecessors, (353), 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) [2022-11-03 04:07:57,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 353 transitions. [2022-11-03 04:07:57,499 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 353 transitions. Word has length 109 [2022-11-03 04:07:57,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:57,499 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 353 transitions. [2022-11-03 04:07:57,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:07:57,500 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 353 transitions. [2022-11-03 04:07:57,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:07:57,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:57,501 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:57,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 04:07:57,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:07:57,723 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:57,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:57,723 INFO L85 PathProgramCache]: Analyzing trace with hash -888483909, now seen corresponding path program 1 times [2022-11-03 04:07:57,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:07:57,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848778888] [2022-11-03 04:07:57,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:57,724 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:07:57,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:07:57,726 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:07:57,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 04:07:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:58,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:07:58,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:58,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:07:58,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:07:58,698 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:07:58,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848778888] [2022-11-03 04:07:58,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848778888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:07:58,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:07:58,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:07:58,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874394845] [2022-11-03 04:07:58,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:58,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:07:58,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:07:58,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:07:58,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:07:58,701 INFO L87 Difference]: Start difference. First operand 247 states and 353 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:07:59,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:59,307 INFO L93 Difference]: Finished difference Result 994 states and 1418 transitions. [2022-11-03 04:07:59,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:07:59,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:07:59,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:59,311 INFO L225 Difference]: With dead ends: 994 [2022-11-03 04:07:59,311 INFO L226 Difference]: Without dead ends: 749 [2022-11-03 04:07:59,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:07:59,312 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 2011 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:59,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2011 Valid, 1249 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 04:07:59,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-11-03 04:07:59,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 249. [2022-11-03 04:07:59,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.4314516129032258) internal successors, (355), 248 states have internal predecessors, (355), 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) [2022-11-03 04:07:59,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 355 transitions. [2022-11-03 04:07:59,365 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 355 transitions. Word has length 109 [2022-11-03 04:07:59,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:59,366 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 355 transitions. [2022-11-03 04:07:59,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:07:59,372 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 355 transitions. [2022-11-03 04:07:59,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:07:59,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:59,374 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:07:59,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 04:07:59,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:07:59,575 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:59,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:59,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1019973881, now seen corresponding path program 1 times [2022-11-03 04:07:59,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:07:59,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993862545] [2022-11-03 04:07:59,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:59,576 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:07:59,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:07:59,577 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:07:59,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 04:08:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:00,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:08:00,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:00,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:00,339 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:00,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993862545] [2022-11-03 04:08:00,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993862545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:00,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:00,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:08:00,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045877467] [2022-11-03 04:08:00,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:00,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:08:00,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:00,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:08:00,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:08:00,342 INFO L87 Difference]: Start difference. First operand 249 states and 355 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:00,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:00,721 INFO L93 Difference]: Finished difference Result 998 states and 1421 transitions. [2022-11-03 04:08:00,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:08:00,721 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:00,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:00,725 INFO L225 Difference]: With dead ends: 998 [2022-11-03 04:08:00,725 INFO L226 Difference]: Without dead ends: 751 [2022-11-03 04:08:00,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:08:00,726 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 2005 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:00,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2005 Valid, 1324 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:08:00,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-11-03 04:08:00,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 251. [2022-11-03 04:08:00,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.428) internal successors, (357), 250 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:08:00,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 357 transitions. [2022-11-03 04:08:00,742 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 357 transitions. Word has length 109 [2022-11-03 04:08:00,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:00,743 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 357 transitions. [2022-11-03 04:08:00,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:00,743 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 357 transitions. [2022-11-03 04:08:00,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:00,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:00,744 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:00,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:00,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:00,958 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:00,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:00,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1973914039, now seen corresponding path program 1 times [2022-11-03 04:08:00,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:00,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853801487] [2022-11-03 04:08:00,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:00,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:00,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:00,961 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:00,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 04:08:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:01,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:08:01,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:01,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:01,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:01,696 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:01,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853801487] [2022-11-03 04:08:01,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853801487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:01,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:01,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:08:01,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686136719] [2022-11-03 04:08:01,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:01,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:08:01,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:01,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:08:01,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:08:01,698 INFO L87 Difference]: Start difference. First operand 251 states and 357 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:02,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:02,082 INFO L93 Difference]: Finished difference Result 1002 states and 1424 transitions. [2022-11-03 04:08:02,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:08:02,083 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:02,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:02,086 INFO L225 Difference]: With dead ends: 1002 [2022-11-03 04:08:02,086 INFO L226 Difference]: Without dead ends: 753 [2022-11-03 04:08:02,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:08:02,087 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1999 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1999 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:02,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1999 Valid, 1327 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:08:02,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-11-03 04:08:02,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 253. [2022-11-03 04:08:02,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.4246031746031746) internal successors, (359), 252 states have internal predecessors, (359), 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) [2022-11-03 04:08:02,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 359 transitions. [2022-11-03 04:08:02,109 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 359 transitions. Word has length 109 [2022-11-03 04:08:02,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:02,110 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 359 transitions. [2022-11-03 04:08:02,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:02,110 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 359 transitions. [2022-11-03 04:08:02,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:02,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:02,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:02,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-03 04:08:02,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:02,331 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:02,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:02,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1241946613, now seen corresponding path program 1 times [2022-11-03 04:08:02,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:02,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186833095] [2022-11-03 04:08:02,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:02,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:02,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:02,335 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:02,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 04:08:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:02,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:08:02,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:03,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:03,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:03,206 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:03,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186833095] [2022-11-03 04:08:03,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186833095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:03,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:03,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:08:03,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834106652] [2022-11-03 04:08:03,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:03,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:08:03,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:03,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:08:03,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:08:03,209 INFO L87 Difference]: Start difference. First operand 253 states and 359 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:03,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:03,805 INFO L93 Difference]: Finished difference Result 1006 states and 1427 transitions. [2022-11-03 04:08:03,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:08:03,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:03,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:03,809 INFO L225 Difference]: With dead ends: 1006 [2022-11-03 04:08:03,809 INFO L226 Difference]: Without dead ends: 755 [2022-11-03 04:08:03,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:08:03,810 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 1993 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:03,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1993 Valid, 1258 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 04:08:03,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-03 04:08:03,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 255. [2022-11-03 04:08:03,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.421259842519685) internal successors, (361), 254 states have internal predecessors, (361), 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) [2022-11-03 04:08:03,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 361 transitions. [2022-11-03 04:08:03,826 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 361 transitions. Word has length 109 [2022-11-03 04:08:03,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:03,826 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 361 transitions. [2022-11-03 04:08:03,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:03,827 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 361 transitions. [2022-11-03 04:08:03,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:03,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:03,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:03,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-11-03 04:08:04,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:04,055 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:04,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:04,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1187553715, now seen corresponding path program 1 times [2022-11-03 04:08:04,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:04,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336332081] [2022-11-03 04:08:04,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:04,057 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:04,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:04,059 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:04,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 04:08:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:04,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 04:08:04,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:05,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:05,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:05,514 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:05,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336332081] [2022-11-03 04:08:05,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336332081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:05,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:05,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:08:05,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347840453] [2022-11-03 04:08:05,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:05,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:08:05,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:05,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:08:05,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:08:05,517 INFO L87 Difference]: Start difference. First operand 255 states and 361 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:06,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:06,057 INFO L93 Difference]: Finished difference Result 1010 states and 1430 transitions. [2022-11-03 04:08:06,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:08:06,058 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:06,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:06,061 INFO L225 Difference]: With dead ends: 1010 [2022-11-03 04:08:06,061 INFO L226 Difference]: Without dead ends: 757 [2022-11-03 04:08:06,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:08:06,062 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 1987 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1987 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:06,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1987 Valid, 1281 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:08:06,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-11-03 04:08:06,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 257. [2022-11-03 04:08:06,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.41796875) internal successors, (363), 256 states have internal predecessors, (363), 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) [2022-11-03 04:08:06,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 363 transitions. [2022-11-03 04:08:06,077 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 363 transitions. Word has length 109 [2022-11-03 04:08:06,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:06,077 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 363 transitions. [2022-11-03 04:08:06,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:06,078 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 363 transitions. [2022-11-03 04:08:06,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:06,079 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:06,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:06,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-11-03 04:08:06,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:06,298 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:06,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:06,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1866825969, now seen corresponding path program 1 times [2022-11-03 04:08:06,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:06,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375959691] [2022-11-03 04:08:06,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:06,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:06,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:06,300 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:06,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 04:08:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:06,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:08:06,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:07,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:07,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:07,218 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:07,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375959691] [2022-11-03 04:08:07,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375959691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:07,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:07,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:08:07,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838017739] [2022-11-03 04:08:07,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:07,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:08:07,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:07,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:08:07,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:08:07,220 INFO L87 Difference]: Start difference. First operand 257 states and 363 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:07,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:07,579 INFO L93 Difference]: Finished difference Result 840 states and 1175 transitions. [2022-11-03 04:08:07,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:08:07,580 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:07,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:07,583 INFO L225 Difference]: With dead ends: 840 [2022-11-03 04:08:07,583 INFO L226 Difference]: Without dead ends: 585 [2022-11-03 04:08:07,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:08:07,585 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 572 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:07,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1683 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 15 Unchecked, 0.3s Time] [2022-11-03 04:08:07,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-11-03 04:08:07,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 331. [2022-11-03 04:08:07,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.3757575757575757) internal successors, (454), 330 states have internal predecessors, (454), 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) [2022-11-03 04:08:07,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 454 transitions. [2022-11-03 04:08:07,604 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 454 transitions. Word has length 109 [2022-11-03 04:08:07,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:07,605 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 454 transitions. [2022-11-03 04:08:07,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:07,605 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 454 transitions. [2022-11-03 04:08:07,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:07,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:07,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:07,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:07,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:07,819 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:07,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:07,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1665002035, now seen corresponding path program 1 times [2022-11-03 04:08:07,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:07,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683078421] [2022-11-03 04:08:07,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:07,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:07,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:07,822 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:07,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 04:08:08,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:08,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:08:08,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:08,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:08,747 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:08,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683078421] [2022-11-03 04:08:08,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683078421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:08,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:08,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:08:08,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423322690] [2022-11-03 04:08:08,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:08,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:08:08,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:08,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:08:08,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:08:08,750 INFO L87 Difference]: Start difference. First operand 331 states and 454 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:09,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:09,225 INFO L93 Difference]: Finished difference Result 1001 states and 1412 transitions. [2022-11-03 04:08:09,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:08:09,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:09,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:09,229 INFO L225 Difference]: With dead ends: 1001 [2022-11-03 04:08:09,229 INFO L226 Difference]: Without dead ends: 746 [2022-11-03 04:08:09,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:08:09,231 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1872 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:09,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 1298 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:08:09,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-11-03 04:08:09,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 335. [2022-11-03 04:08:09,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.374251497005988) internal successors, (459), 334 states have internal predecessors, (459), 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) [2022-11-03 04:08:09,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 459 transitions. [2022-11-03 04:08:09,251 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 459 transitions. Word has length 109 [2022-11-03 04:08:09,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:09,252 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 459 transitions. [2022-11-03 04:08:09,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:09,252 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 459 transitions. [2022-11-03 04:08:09,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:09,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:09,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:09,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:09,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:09,466 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:09,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:09,467 INFO L85 PathProgramCache]: Analyzing trace with hash 2098731121, now seen corresponding path program 1 times [2022-11-03 04:08:09,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:09,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1433731378] [2022-11-03 04:08:09,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:09,468 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:09,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:09,470 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:09,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 04:08:10,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:10,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:08:10,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:10,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:10,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:10,419 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:10,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1433731378] [2022-11-03 04:08:10,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1433731378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:10,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:10,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:08:10,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481005280] [2022-11-03 04:08:10,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:10,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:08:10,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:10,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:08:10,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:08:10,421 INFO L87 Difference]: Start difference. First operand 335 states and 459 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:11,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:11,040 INFO L93 Difference]: Finished difference Result 1110 states and 1553 transitions. [2022-11-03 04:08:11,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:08:11,041 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:11,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:11,044 INFO L225 Difference]: With dead ends: 1110 [2022-11-03 04:08:11,044 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 04:08:11,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:08:11,046 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 2301 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:11,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2301 Valid, 1885 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:08:11,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 04:08:11,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 337. [2022-11-03 04:08:11,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.3720238095238095) internal successors, (461), 336 states have internal predecessors, (461), 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) [2022-11-03 04:08:11,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 461 transitions. [2022-11-03 04:08:11,065 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 461 transitions. Word has length 109 [2022-11-03 04:08:11,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:11,066 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 461 transitions. [2022-11-03 04:08:11,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:11,066 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 461 transitions. [2022-11-03 04:08:11,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:11,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:11,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:11,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:11,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:11,283 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:11,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:11,283 INFO L85 PathProgramCache]: Analyzing trace with hash 2139405871, now seen corresponding path program 1 times [2022-11-03 04:08:11,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:11,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039511405] [2022-11-03 04:08:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:11,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:11,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:11,285 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:11,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 04:08:11,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:11,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:08:11,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:12,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:12,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:12,450 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:12,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039511405] [2022-11-03 04:08:12,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039511405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:12,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:12,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:08:12,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439348657] [2022-11-03 04:08:12,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:12,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:08:12,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:12,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:08:12,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:08:12,458 INFO L87 Difference]: Start difference. First operand 337 states and 461 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:13,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:13,365 INFO L93 Difference]: Finished difference Result 1114 states and 1556 transitions. [2022-11-03 04:08:13,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:08:13,366 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:13,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:13,369 INFO L225 Difference]: With dead ends: 1114 [2022-11-03 04:08:13,369 INFO L226 Difference]: Without dead ends: 853 [2022-11-03 04:08:13,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:08:13,371 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 2291 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2291 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:13,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2291 Valid, 1809 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 04:08:13,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-11-03 04:08:13,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 339. [2022-11-03 04:08:13,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.3698224852071006) internal successors, (463), 338 states have internal predecessors, (463), 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) [2022-11-03 04:08:13,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 463 transitions. [2022-11-03 04:08:13,395 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 463 transitions. Word has length 109 [2022-11-03 04:08:13,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:13,396 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 463 transitions. [2022-11-03 04:08:13,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:13,396 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 463 transitions. [2022-11-03 04:08:13,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:13,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:13,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:13,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:13,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:13,613 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:13,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:13,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1279542419, now seen corresponding path program 1 times [2022-11-03 04:08:13,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:13,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546599516] [2022-11-03 04:08:13,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:13,615 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:13,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:13,616 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:13,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 04:08:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:14,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:08:14,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:14,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:14,425 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:14,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546599516] [2022-11-03 04:08:14,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546599516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:14,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:14,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:08:14,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021781246] [2022-11-03 04:08:14,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:14,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:08:14,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:14,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:08:14,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:08:14,427 INFO L87 Difference]: Start difference. First operand 339 states and 463 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:15,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:15,070 INFO L93 Difference]: Finished difference Result 1118 states and 1559 transitions. [2022-11-03 04:08:15,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:08:15,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:15,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:15,076 INFO L225 Difference]: With dead ends: 1118 [2022-11-03 04:08:15,076 INFO L226 Difference]: Without dead ends: 855 [2022-11-03 04:08:15,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:08:15,078 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 2287 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2287 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:15,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2287 Valid, 1891 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 04:08:15,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-11-03 04:08:15,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 341. [2022-11-03 04:08:15,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.3676470588235294) internal successors, (465), 340 states have internal predecessors, (465), 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) [2022-11-03 04:08:15,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 465 transitions. [2022-11-03 04:08:15,101 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 465 transitions. Word has length 109 [2022-11-03 04:08:15,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:15,102 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 465 transitions. [2022-11-03 04:08:15,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:15,102 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 465 transitions. [2022-11-03 04:08:15,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:15,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:15,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:15,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:15,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:15,322 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:15,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:15,323 INFO L85 PathProgramCache]: Analyzing trace with hash 258797611, now seen corresponding path program 1 times [2022-11-03 04:08:15,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:15,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346026849] [2022-11-03 04:08:15,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:15,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:15,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:15,326 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:15,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 04:08:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:15,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:08:15,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:16,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:16,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:16,164 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:16,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346026849] [2022-11-03 04:08:16,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346026849] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:16,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:16,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:08:16,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132300080] [2022-11-03 04:08:16,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:16,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:08:16,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:16,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:08:16,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:08:16,167 INFO L87 Difference]: Start difference. First operand 341 states and 465 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:16,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:16,761 INFO L93 Difference]: Finished difference Result 1122 states and 1562 transitions. [2022-11-03 04:08:16,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:08:16,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:16,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:16,764 INFO L225 Difference]: With dead ends: 1122 [2022-11-03 04:08:16,765 INFO L226 Difference]: Without dead ends: 857 [2022-11-03 04:08:16,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:08:16,766 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 2280 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2280 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:16,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2280 Valid, 1894 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:08:16,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-11-03 04:08:16,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 343. [2022-11-03 04:08:16,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.3654970760233918) internal successors, (467), 342 states have internal predecessors, (467), 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) [2022-11-03 04:08:16,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 467 transitions. [2022-11-03 04:08:16,788 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 467 transitions. Word has length 109 [2022-11-03 04:08:16,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:16,788 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 467 transitions. [2022-11-03 04:08:16,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:16,789 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 467 transitions. [2022-11-03 04:08:16,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:16,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:16,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:16,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-11-03 04:08:17,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:17,011 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:17,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:17,011 INFO L85 PathProgramCache]: Analyzing trace with hash -222282647, now seen corresponding path program 1 times [2022-11-03 04:08:17,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:17,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29673812] [2022-11-03 04:08:17,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:17,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:17,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:17,015 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:17,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 04:08:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:17,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:08:17,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:18,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:18,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:18,191 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:18,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29673812] [2022-11-03 04:08:18,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29673812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:18,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:18,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:08:18,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144617976] [2022-11-03 04:08:18,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:18,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:08:18,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:18,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:08:18,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:08:18,193 INFO L87 Difference]: Start difference. First operand 343 states and 467 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:18,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:18,956 INFO L93 Difference]: Finished difference Result 1126 states and 1565 transitions. [2022-11-03 04:08:18,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:08:18,957 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:18,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:18,961 INFO L225 Difference]: With dead ends: 1126 [2022-11-03 04:08:18,961 INFO L226 Difference]: Without dead ends: 859 [2022-11-03 04:08:18,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:08:18,963 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 2270 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2270 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:18,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2270 Valid, 1818 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 04:08:18,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-11-03 04:08:18,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 345. [2022-11-03 04:08:18,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.3633720930232558) internal successors, (469), 344 states have internal predecessors, (469), 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) [2022-11-03 04:08:18,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 469 transitions. [2022-11-03 04:08:18,990 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 469 transitions. Word has length 109 [2022-11-03 04:08:18,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:18,990 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 469 transitions. [2022-11-03 04:08:18,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:18,991 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 469 transitions. [2022-11-03 04:08:18,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:18,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:18,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:19,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:19,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:19,207 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:19,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:19,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1716879399, now seen corresponding path program 1 times [2022-11-03 04:08:19,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:19,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310051298] [2022-11-03 04:08:19,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:19,208 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:19,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:19,210 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:19,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 04:08:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:19,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:08:19,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:20,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:20,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:20,110 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:20,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310051298] [2022-11-03 04:08:20,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310051298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:20,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:20,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:08:20,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526878555] [2022-11-03 04:08:20,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:20,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:08:20,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:20,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:08:20,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:08:20,114 INFO L87 Difference]: Start difference. First operand 345 states and 469 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:20,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:20,602 INFO L93 Difference]: Finished difference Result 1029 states and 1436 transitions. [2022-11-03 04:08:20,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:08:20,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:20,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:20,604 INFO L225 Difference]: With dead ends: 1029 [2022-11-03 04:08:20,604 INFO L226 Difference]: Without dead ends: 760 [2022-11-03 04:08:20,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:08:20,605 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 1834 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:20,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 1318 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:08:20,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-03 04:08:20,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 349. [2022-11-03 04:08:20,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.3620689655172413) internal successors, (474), 348 states have internal predecessors, (474), 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) [2022-11-03 04:08:20,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 474 transitions. [2022-11-03 04:08:20,647 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 474 transitions. Word has length 109 [2022-11-03 04:08:20,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:20,647 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 474 transitions. [2022-11-03 04:08:20,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:20,648 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 474 transitions. [2022-11-03 04:08:20,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:20,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:20,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:20,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:20,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:20,862 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:20,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:20,863 INFO L85 PathProgramCache]: Analyzing trace with hash -332508443, now seen corresponding path program 1 times [2022-11-03 04:08:20,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:20,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179411336] [2022-11-03 04:08:20,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:20,864 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:20,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:20,866 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:20,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 04:08:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:21,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:08:21,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:21,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:21,693 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:21,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179411336] [2022-11-03 04:08:21,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179411336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:21,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:21,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:08:21,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240201198] [2022-11-03 04:08:21,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:21,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:08:21,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:21,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:08:21,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:08:21,695 INFO L87 Difference]: Start difference. First operand 349 states and 474 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:22,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:22,178 INFO L93 Difference]: Finished difference Result 1166 states and 1613 transitions. [2022-11-03 04:08:22,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:08:22,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:22,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:22,181 INFO L225 Difference]: With dead ends: 1166 [2022-11-03 04:08:22,181 INFO L226 Difference]: Without dead ends: 893 [2022-11-03 04:08:22,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:08:22,183 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 2314 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:22,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2314 Valid, 1905 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:08:22,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-11-03 04:08:22,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 351. [2022-11-03 04:08:22,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.36) internal successors, (476), 350 states have internal predecessors, (476), 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) [2022-11-03 04:08:22,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 476 transitions. [2022-11-03 04:08:22,201 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 476 transitions. Word has length 109 [2022-11-03 04:08:22,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:22,202 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 476 transitions. [2022-11-03 04:08:22,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:22,202 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 476 transitions. [2022-11-03 04:08:22,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:22,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:22,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:22,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-03 04:08:22,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:22,419 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:22,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:22,420 INFO L85 PathProgramCache]: Analyzing trace with hash -84361949, now seen corresponding path program 1 times [2022-11-03 04:08:22,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:22,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480179607] [2022-11-03 04:08:22,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:22,421 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:22,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:22,423 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:22,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-03 04:08:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:23,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:08:23,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:23,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:23,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:23,667 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:23,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480179607] [2022-11-03 04:08:23,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480179607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:23,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:23,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:08:23,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63309985] [2022-11-03 04:08:23,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:23,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:08:23,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:23,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:08:23,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:08:23,670 INFO L87 Difference]: Start difference. First operand 351 states and 476 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:24,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:24,449 INFO L93 Difference]: Finished difference Result 1170 states and 1616 transitions. [2022-11-03 04:08:24,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:08:24,451 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:24,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:24,454 INFO L225 Difference]: With dead ends: 1170 [2022-11-03 04:08:24,455 INFO L226 Difference]: Without dead ends: 895 [2022-11-03 04:08:24,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:08:24,456 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 2304 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2304 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:24,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2304 Valid, 1829 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 04:08:24,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-11-03 04:08:24,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 353. [2022-11-03 04:08:24,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.3579545454545454) internal successors, (478), 352 states have internal predecessors, (478), 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) [2022-11-03 04:08:24,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 478 transitions. [2022-11-03 04:08:24,471 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 478 transitions. Word has length 109 [2022-11-03 04:08:24,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:24,471 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 478 transitions. [2022-11-03 04:08:24,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:24,471 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 478 transitions. [2022-11-03 04:08:24,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:24,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:24,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:24,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-03 04:08:24,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:24,678 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:24,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:24,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1456169247, now seen corresponding path program 1 times [2022-11-03 04:08:24,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:24,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142208440] [2022-11-03 04:08:24,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:24,680 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:24,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:24,681 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:24,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 04:08:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:25,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:08:25,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:25,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:25,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:25,534 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:25,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142208440] [2022-11-03 04:08:25,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142208440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:25,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:25,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:08:25,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955057620] [2022-11-03 04:08:25,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:25,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:08:25,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:25,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:08:25,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:08:25,536 INFO L87 Difference]: Start difference. First operand 353 states and 478 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:25,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:25,949 INFO L93 Difference]: Finished difference Result 1043 states and 1448 transitions. [2022-11-03 04:08:25,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:08:25,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:25,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:25,951 INFO L225 Difference]: With dead ends: 1043 [2022-11-03 04:08:25,951 INFO L226 Difference]: Without dead ends: 766 [2022-11-03 04:08:25,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:08:25,952 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1816 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1816 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:25,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1816 Valid, 1326 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:08:25,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-11-03 04:08:25,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 355. [2022-11-03 04:08:25,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.3559322033898304) internal successors, (480), 354 states have internal predecessors, (480), 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) [2022-11-03 04:08:25,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 480 transitions. [2022-11-03 04:08:25,970 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 480 transitions. Word has length 109 [2022-11-03 04:08:25,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:25,970 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 480 transitions. [2022-11-03 04:08:25,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:25,971 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 480 transitions. [2022-11-03 04:08:25,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:25,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:25,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:25,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:26,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:26,189 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:26,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:26,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1809438751, now seen corresponding path program 1 times [2022-11-03 04:08:26,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:26,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451940988] [2022-11-03 04:08:26,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:26,191 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:26,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:26,192 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:26,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 04:08:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:26,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:08:26,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:27,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:27,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:27,009 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:27,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451940988] [2022-11-03 04:08:27,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451940988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:27,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:27,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:08:27,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532887900] [2022-11-03 04:08:27,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:27,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:08:27,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:27,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:08:27,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:08:27,010 INFO L87 Difference]: Start difference. First operand 355 states and 480 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:27,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:27,349 INFO L93 Difference]: Finished difference Result 1047 states and 1451 transitions. [2022-11-03 04:08:27,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:08:27,349 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:27,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:27,353 INFO L225 Difference]: With dead ends: 1047 [2022-11-03 04:08:27,353 INFO L226 Difference]: Without dead ends: 768 [2022-11-03 04:08:27,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:08:27,354 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 1810 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:27,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1810 Valid, 1328 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:08:27,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-11-03 04:08:27,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 357. [2022-11-03 04:08:27,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.353932584269663) internal successors, (482), 356 states have internal predecessors, (482), 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) [2022-11-03 04:08:27,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 482 transitions. [2022-11-03 04:08:27,368 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 482 transitions. Word has length 109 [2022-11-03 04:08:27,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:27,368 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 482 transitions. [2022-11-03 04:08:27,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:27,368 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 482 transitions. [2022-11-03 04:08:27,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:27,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:27,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:27,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-03 04:08:27,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:27,578 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:27,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:27,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1415071965, now seen corresponding path program 1 times [2022-11-03 04:08:27,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:27,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872060452] [2022-11-03 04:08:27,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:27,579 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:27,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:27,580 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:27,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 04:08:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:28,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:08:28,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:28,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:28,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:28,810 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:28,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872060452] [2022-11-03 04:08:28,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872060452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:28,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:28,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:08:28,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130001281] [2022-11-03 04:08:28,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:28,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:08:28,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:28,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:08:28,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:08:28,813 INFO L87 Difference]: Start difference. First operand 357 states and 482 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:29,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:29,533 INFO L93 Difference]: Finished difference Result 1194 states and 1640 transitions. [2022-11-03 04:08:29,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:08:29,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:29,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:29,535 INFO L225 Difference]: With dead ends: 1194 [2022-11-03 04:08:29,535 INFO L226 Difference]: Without dead ends: 913 [2022-11-03 04:08:29,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:08:29,537 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 2307 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2307 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:29,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2307 Valid, 1836 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 04:08:29,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2022-11-03 04:08:29,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 359. [2022-11-03 04:08:29,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.3519553072625698) internal successors, (484), 358 states have internal predecessors, (484), 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) [2022-11-03 04:08:29,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 484 transitions. [2022-11-03 04:08:29,557 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 484 transitions. Word has length 109 [2022-11-03 04:08:29,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:29,557 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 484 transitions. [2022-11-03 04:08:29,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:29,558 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 484 transitions. [2022-11-03 04:08:29,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:29,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:29,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:29,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-03 04:08:29,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:29,776 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:29,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:29,776 INFO L85 PathProgramCache]: Analyzing trace with hash -828911333, now seen corresponding path program 1 times [2022-11-03 04:08:29,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:29,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517196659] [2022-11-03 04:08:29,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:29,778 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:29,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:29,779 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:29,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-03 04:08:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:30,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 04:08:30,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:31,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:31,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:31,488 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:31,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517196659] [2022-11-03 04:08:31,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517196659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:31,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:31,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:08:31,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718613390] [2022-11-03 04:08:31,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:31,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:08:31,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:31,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:08:31,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:08:31,489 INFO L87 Difference]: Start difference. First operand 359 states and 484 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:32,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:32,212 INFO L93 Difference]: Finished difference Result 1186 states and 1628 transitions. [2022-11-03 04:08:32,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:08:32,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:32,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:32,215 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 04:08:32,215 INFO L226 Difference]: Without dead ends: 903 [2022-11-03 04:08:32,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:08:32,217 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 2276 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2276 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:32,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2276 Valid, 1860 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 04:08:32,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-11-03 04:08:32,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 361. [2022-11-03 04:08:32,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.35) internal successors, (486), 360 states have internal predecessors, (486), 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) [2022-11-03 04:08:32,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 486 transitions. [2022-11-03 04:08:32,247 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 486 transitions. Word has length 109 [2022-11-03 04:08:32,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:32,247 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 486 transitions. [2022-11-03 04:08:32,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:32,248 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 486 transitions. [2022-11-03 04:08:32,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:32,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:32,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:32,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:32,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:32,465 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:32,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:32,466 INFO L85 PathProgramCache]: Analyzing trace with hash -554151719, now seen corresponding path program 1 times [2022-11-03 04:08:32,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:32,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845359556] [2022-11-03 04:08:32,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:32,467 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:32,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:32,468 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:32,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 04:08:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:32,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-03 04:08:32,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:35,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:35,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:35,240 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:35,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845359556] [2022-11-03 04:08:35,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845359556] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:35,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:35,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:08:35,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086010242] [2022-11-03 04:08:35,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:35,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:08:35,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:35,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:08:35,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:08:35,242 INFO L87 Difference]: Start difference. First operand 361 states and 486 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:36,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:36,212 INFO L93 Difference]: Finished difference Result 1162 states and 1595 transitions. [2022-11-03 04:08:36,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:08:36,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:36,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:36,215 INFO L225 Difference]: With dead ends: 1162 [2022-11-03 04:08:36,215 INFO L226 Difference]: Without dead ends: 877 [2022-11-03 04:08:36,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:08:36,216 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 2212 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2212 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:36,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2212 Valid, 1863 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 04:08:36,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2022-11-03 04:08:36,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 363. [2022-11-03 04:08:36,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.3480662983425415) internal successors, (488), 362 states have internal predecessors, (488), 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) [2022-11-03 04:08:36,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 488 transitions. [2022-11-03 04:08:36,229 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 488 transitions. Word has length 109 [2022-11-03 04:08:36,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:36,230 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 488 transitions. [2022-11-03 04:08:36,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:36,230 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 488 transitions. [2022-11-03 04:08:36,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:36,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:36,231 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:36,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:36,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:36,434 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:36,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:36,435 INFO L85 PathProgramCache]: Analyzing trace with hash -531519465, now seen corresponding path program 1 times [2022-11-03 04:08:36,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:36,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897839114] [2022-11-03 04:08:36,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:36,436 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:36,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:36,437 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:36,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-03 04:08:36,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:36,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 04:08:36,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:37,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:37,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:37,364 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:37,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897839114] [2022-11-03 04:08:37,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897839114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:37,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:37,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:08:37,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609519540] [2022-11-03 04:08:37,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:37,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:08:37,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:37,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:08:37,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:08:37,366 INFO L87 Difference]: Start difference. First operand 363 states and 488 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:37,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:37,691 INFO L93 Difference]: Finished difference Result 968 states and 1310 transitions. [2022-11-03 04:08:37,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:08:37,692 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:37,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:37,694 INFO L225 Difference]: With dead ends: 968 [2022-11-03 04:08:37,694 INFO L226 Difference]: Without dead ends: 681 [2022-11-03 04:08:37,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:08:37,695 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 525 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:37,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 1872 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 16 Unchecked, 0.3s Time] [2022-11-03 04:08:37,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-11-03 04:08:37,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 395. [2022-11-03 04:08:37,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.3223350253807107) internal successors, (521), 394 states have internal predecessors, (521), 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) [2022-11-03 04:08:37,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 521 transitions. [2022-11-03 04:08:37,709 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 521 transitions. Word has length 109 [2022-11-03 04:08:37,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:37,709 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 521 transitions. [2022-11-03 04:08:37,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:37,710 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 521 transitions. [2022-11-03 04:08:37,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:37,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:37,714 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:37,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-11-03 04:08:37,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:37,922 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:37,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:37,923 INFO L85 PathProgramCache]: Analyzing trace with hash -22046375, now seen corresponding path program 1 times [2022-11-03 04:08:37,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:37,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234519595] [2022-11-03 04:08:37,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:37,924 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:37,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:37,925 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:37,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 04:08:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:38,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:08:38,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:38,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:38,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:38,793 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:38,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234519595] [2022-11-03 04:08:38,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234519595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:38,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:38,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:08:38,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301751827] [2022-11-03 04:08:38,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:38,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:08:38,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:38,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:08:38,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:08:38,798 INFO L87 Difference]: Start difference. First operand 395 states and 521 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:39,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:39,263 INFO L93 Difference]: Finished difference Result 1316 states and 1794 transitions. [2022-11-03 04:08:39,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:08:39,264 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:39,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:39,267 INFO L225 Difference]: With dead ends: 1316 [2022-11-03 04:08:39,267 INFO L226 Difference]: Without dead ends: 1029 [2022-11-03 04:08:39,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:08:39,269 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1892 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:39,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1892 Valid, 1605 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:08:39,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2022-11-03 04:08:39,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 397. [2022-11-03 04:08:39,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 1.3207070707070707) internal successors, (523), 396 states have internal predecessors, (523), 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) [2022-11-03 04:08:39,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 523 transitions. [2022-11-03 04:08:39,284 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 523 transitions. Word has length 109 [2022-11-03 04:08:39,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:39,284 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 523 transitions. [2022-11-03 04:08:39,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:39,284 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 523 transitions. [2022-11-03 04:08:39,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:39,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:39,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:39,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-03 04:08:39,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:39,485 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:39,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:39,486 INFO L85 PathProgramCache]: Analyzing trace with hash -156059881, now seen corresponding path program 1 times [2022-11-03 04:08:39,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:39,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724686490] [2022-11-03 04:08:39,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:39,487 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:39,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:39,487 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:39,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-03 04:08:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:39,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-03 04:08:39,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:41,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:41,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:41,073 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:41,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724686490] [2022-11-03 04:08:41,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724686490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:41,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:41,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:08:41,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913215747] [2022-11-03 04:08:41,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:41,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:08:41,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:41,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:08:41,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:08:41,075 INFO L87 Difference]: Start difference. First operand 397 states and 523 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:41,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:41,591 INFO L93 Difference]: Finished difference Result 1320 states and 1797 transitions. [2022-11-03 04:08:41,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:08:41,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:41,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:41,595 INFO L225 Difference]: With dead ends: 1320 [2022-11-03 04:08:41,595 INFO L226 Difference]: Without dead ends: 1031 [2022-11-03 04:08:41,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:08:41,596 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 1886 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:41,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1886 Valid, 1572 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 04:08:41,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-11-03 04:08:41,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 399. [2022-11-03 04:08:41,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.3190954773869348) internal successors, (525), 398 states have internal predecessors, (525), 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) [2022-11-03 04:08:41,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 525 transitions. [2022-11-03 04:08:41,614 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 525 transitions. Word has length 109 [2022-11-03 04:08:41,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:41,614 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 525 transitions. [2022-11-03 04:08:41,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 6 states have internal predecessors, (109), 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) [2022-11-03 04:08:41,615 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 525 transitions. [2022-11-03 04:08:41,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:41,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:41,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:41,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:41,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:41,816 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:41,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:41,817 INFO L85 PathProgramCache]: Analyzing trace with hash 62794837, now seen corresponding path program 1 times [2022-11-03 04:08:41,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:41,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35556271] [2022-11-03 04:08:41,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:41,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:41,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:41,819 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:41,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-03 04:08:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:42,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:08:42,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:42,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:42,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:42,430 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:42,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35556271] [2022-11-03 04:08:42,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35556271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:42,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:42,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:08:42,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330305661] [2022-11-03 04:08:42,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:42,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:08:42,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:42,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:08:42,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:08:42,432 INFO L87 Difference]: Start difference. First operand 399 states and 525 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2022-11-03 04:08:42,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:42,513 INFO L93 Difference]: Finished difference Result 1167 states and 1597 transitions. [2022-11-03 04:08:42,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:08:42,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:42,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:42,517 INFO L225 Difference]: With dead ends: 1167 [2022-11-03 04:08:42,517 INFO L226 Difference]: Without dead ends: 876 [2022-11-03 04:08:42,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:08:42,518 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 684 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:42,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 1190 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:08:42,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-03 04:08:42,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 471. [2022-11-03 04:08:42,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.3404255319148937) internal successors, (630), 470 states have internal predecessors, (630), 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) [2022-11-03 04:08:42,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 630 transitions. [2022-11-03 04:08:42,534 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 630 transitions. Word has length 109 [2022-11-03 04:08:42,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:42,534 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 630 transitions. [2022-11-03 04:08:42,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2022-11-03 04:08:42,535 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 630 transitions. [2022-11-03 04:08:42,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:42,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:42,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:42,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:42,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:42,753 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:42,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:42,753 INFO L85 PathProgramCache]: Analyzing trace with hash -754853613, now seen corresponding path program 1 times [2022-11-03 04:08:42,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:42,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834120529] [2022-11-03 04:08:42,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:42,754 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:42,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:42,755 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:42,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-03 04:08:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:43,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:08:43,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:43,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:43,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:43,353 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:43,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834120529] [2022-11-03 04:08:43,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834120529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:43,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:43,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:08:43,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161609734] [2022-11-03 04:08:43,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:43,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:08:43,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:43,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:08:43,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:08:43,355 INFO L87 Difference]: Start difference. First operand 471 states and 630 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2022-11-03 04:08:43,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:43,436 INFO L93 Difference]: Finished difference Result 1167 states and 1596 transitions. [2022-11-03 04:08:43,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:08:43,437 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:43,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:43,439 INFO L225 Difference]: With dead ends: 1167 [2022-11-03 04:08:43,439 INFO L226 Difference]: Without dead ends: 876 [2022-11-03 04:08:43,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:08:43,440 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 678 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:43,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1189 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:08:43,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-03 04:08:43,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 473. [2022-11-03 04:08:43,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.3389830508474576) internal successors, (632), 472 states have internal predecessors, (632), 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) [2022-11-03 04:08:43,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 632 transitions. [2022-11-03 04:08:43,460 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 632 transitions. Word has length 109 [2022-11-03 04:08:43,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:43,460 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 632 transitions. [2022-11-03 04:08:43,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2022-11-03 04:08:43,460 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 632 transitions. [2022-11-03 04:08:43,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:43,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:43,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:43,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-11-03 04:08:43,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:43,674 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:43,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:43,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1545968977, now seen corresponding path program 1 times [2022-11-03 04:08:43,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:43,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705095414] [2022-11-03 04:08:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:43,676 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:43,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:43,677 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:43,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-03 04:08:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:44,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:08:44,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:44,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:44,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:44,306 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:44,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705095414] [2022-11-03 04:08:44,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705095414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:44,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:44,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:08:44,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086763967] [2022-11-03 04:08:44,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:44,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:08:44,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:44,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:08:44,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:08:44,308 INFO L87 Difference]: Start difference. First operand 473 states and 632 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2022-11-03 04:08:44,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:44,395 INFO L93 Difference]: Finished difference Result 1167 states and 1595 transitions. [2022-11-03 04:08:44,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:08:44,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:44,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:44,397 INFO L225 Difference]: With dead ends: 1167 [2022-11-03 04:08:44,397 INFO L226 Difference]: Without dead ends: 876 [2022-11-03 04:08:44,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:08:44,398 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 657 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:44,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1188 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:08:44,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-03 04:08:44,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 481. [2022-11-03 04:08:44,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.3395833333333333) internal successors, (643), 480 states have internal predecessors, (643), 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) [2022-11-03 04:08:44,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 643 transitions. [2022-11-03 04:08:44,416 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 643 transitions. Word has length 109 [2022-11-03 04:08:44,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:44,417 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 643 transitions. [2022-11-03 04:08:44,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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) [2022-11-03 04:08:44,417 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 643 transitions. [2022-11-03 04:08:44,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:44,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:44,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:44,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:44,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:44,635 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:44,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:44,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1152941967, now seen corresponding path program 1 times [2022-11-03 04:08:44,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:44,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822039274] [2022-11-03 04:08:44,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:44,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:44,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:44,638 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:44,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-03 04:08:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:45,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:08:45,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:45,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:45,302 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:45,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822039274] [2022-11-03 04:08:45,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822039274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:45,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:45,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:08:45,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480679238] [2022-11-03 04:08:45,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:45,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:08:45,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:45,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:08:45,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:08:45,304 INFO L87 Difference]: Start difference. First operand 481 states and 643 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:45,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:45,679 INFO L93 Difference]: Finished difference Result 1348 states and 1829 transitions. [2022-11-03 04:08:45,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:08:45,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:45,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:45,681 INFO L225 Difference]: With dead ends: 1348 [2022-11-03 04:08:45,681 INFO L226 Difference]: Without dead ends: 1057 [2022-11-03 04:08:45,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:08:45,682 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 922 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 2604 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:45,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 2604 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 30 Unchecked, 0.3s Time] [2022-11-03 04:08:45,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2022-11-03 04:08:45,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 489. [2022-11-03 04:08:45,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 1.3381147540983607) internal successors, (653), 488 states have internal predecessors, (653), 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) [2022-11-03 04:08:45,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 653 transitions. [2022-11-03 04:08:45,702 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 653 transitions. Word has length 109 [2022-11-03 04:08:45,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:45,703 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 653 transitions. [2022-11-03 04:08:45,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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) [2022-11-03 04:08:45,703 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 653 transitions. [2022-11-03 04:08:45,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-03 04:08:45,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:45,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 04:08:45,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:45,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:45,921 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:45,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:45,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1210200269, now seen corresponding path program 1 times [2022-11-03 04:08:45,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:45,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311310143] [2022-11-03 04:08:45,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:45,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:45,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:45,923 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:45,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-03 04:08:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:46,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 04:08:46,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:46,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:46,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:46,811 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:46,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311310143] [2022-11-03 04:08:46,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311310143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:46,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:46,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:08:46,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503056577] [2022-11-03 04:08:46,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:46,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:08:46,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:46,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:08:46,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:08:46,813 INFO L87 Difference]: Start difference. First operand 489 states and 653 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2022-11-03 04:08:47,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:47,193 INFO L93 Difference]: Finished difference Result 787 states and 1062 transitions. [2022-11-03 04:08:47,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:08:47,194 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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 109 [2022-11-03 04:08:47,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:47,195 INFO L225 Difference]: With dead ends: 787 [2022-11-03 04:08:47,195 INFO L226 Difference]: Without dead ends: 785 [2022-11-03 04:08:47,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:08:47,196 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 787 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:47,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1301 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:08:47,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2022-11-03 04:08:47,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 497. [2022-11-03 04:08:47,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.3387096774193548) internal successors, (664), 496 states have internal predecessors, (664), 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) [2022-11-03 04:08:47,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 664 transitions. [2022-11-03 04:08:47,213 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 664 transitions. Word has length 109 [2022-11-03 04:08:47,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:47,213 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 664 transitions. [2022-11-03 04:08:47,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 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) [2022-11-03 04:08:47,214 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 664 transitions. [2022-11-03 04:08:47,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:08:47,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:47,216 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:08:47,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-03 04:08:47,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:47,434 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:47,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:47,434 INFO L85 PathProgramCache]: Analyzing trace with hash -303024265, now seen corresponding path program 1 times [2022-11-03 04:08:47,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:47,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408028634] [2022-11-03 04:08:47,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:47,436 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:47,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:47,437 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:47,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-03 04:08:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:48,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:08:48,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:48,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:48,426 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:48,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408028634] [2022-11-03 04:08:48,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408028634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:48,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:48,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:08:48,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352338980] [2022-11-03 04:08:48,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:48,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:08:48,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:48,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:08:48,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:08:48,429 INFO L87 Difference]: Start difference. First operand 497 states and 664 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2022-11-03 04:08:48,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:48,523 INFO L93 Difference]: Finished difference Result 1173 states and 1602 transitions. [2022-11-03 04:08:48,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:08:48,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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 310 [2022-11-03 04:08:48,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:48,527 INFO L225 Difference]: With dead ends: 1173 [2022-11-03 04:08:48,527 INFO L226 Difference]: Without dead ends: 882 [2022-11-03 04:08:48,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:08:48,528 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 628 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:48,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 1185 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:08:48,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2022-11-03 04:08:48,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 499. [2022-11-03 04:08:48,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.3373493975903614) internal successors, (666), 498 states have internal predecessors, (666), 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) [2022-11-03 04:08:48,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 666 transitions. [2022-11-03 04:08:48,551 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 666 transitions. Word has length 310 [2022-11-03 04:08:48,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:48,551 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 666 transitions. [2022-11-03 04:08:48,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2022-11-03 04:08:48,552 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 666 transitions. [2022-11-03 04:08:48,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:08:48,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:48,555 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:08:48,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:48,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:48,775 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:48,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:48,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2024138105, now seen corresponding path program 1 times [2022-11-03 04:08:48,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:48,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1128384634] [2022-11-03 04:08:48,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:48,778 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:48,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:48,779 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:48,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-03 04:08:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:49,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:08:49,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:49,806 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:49,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:49,807 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:49,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1128384634] [2022-11-03 04:08:49,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1128384634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:49,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:49,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:08:49,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171347109] [2022-11-03 04:08:49,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:49,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:08:49,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:49,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:08:49,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:08:49,809 INFO L87 Difference]: Start difference. First operand 499 states and 666 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 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) [2022-11-03 04:08:50,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:50,179 INFO L93 Difference]: Finished difference Result 1356 states and 1838 transitions. [2022-11-03 04:08:50,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:08:50,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 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 310 [2022-11-03 04:08:50,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:50,182 INFO L225 Difference]: With dead ends: 1356 [2022-11-03 04:08:50,182 INFO L226 Difference]: Without dead ends: 1065 [2022-11-03 04:08:50,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:08:50,183 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 1173 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:50,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 1906 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 28 Unchecked, 0.3s Time] [2022-11-03 04:08:50,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2022-11-03 04:08:50,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 509. [2022-11-03 04:08:50,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 1.3346456692913387) internal successors, (678), 508 states have internal predecessors, (678), 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) [2022-11-03 04:08:50,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 678 transitions. [2022-11-03 04:08:50,207 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 678 transitions. Word has length 310 [2022-11-03 04:08:50,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:50,207 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 678 transitions. [2022-11-03 04:08:50,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 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) [2022-11-03 04:08:50,208 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 678 transitions. [2022-11-03 04:08:50,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:08:50,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:50,210 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:08:50,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:50,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:50,436 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:50,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:50,436 INFO L85 PathProgramCache]: Analyzing trace with hash 299295867, now seen corresponding path program 1 times [2022-11-03 04:08:50,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:50,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49871630] [2022-11-03 04:08:50,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:50,439 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:50,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:50,441 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:50,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-03 04:08:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:51,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:08:51,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:51,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:51,463 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:51,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49871630] [2022-11-03 04:08:51,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49871630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:51,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:51,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:08:51,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466516658] [2022-11-03 04:08:51,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:51,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:08:51,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:51,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:08:51,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:08:51,465 INFO L87 Difference]: Start difference. First operand 509 states and 678 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2022-11-03 04:08:51,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:51,557 INFO L93 Difference]: Finished difference Result 1183 states and 1613 transitions. [2022-11-03 04:08:51,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:08:51,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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 310 [2022-11-03 04:08:51,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:51,559 INFO L225 Difference]: With dead ends: 1183 [2022-11-03 04:08:51,559 INFO L226 Difference]: Without dead ends: 892 [2022-11-03 04:08:51,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:08:51,560 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 612 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:51,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 1184 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:08:51,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2022-11-03 04:08:51,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 515. [2022-11-03 04:08:51,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 1.3346303501945525) internal successors, (686), 514 states have internal predecessors, (686), 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) [2022-11-03 04:08:51,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 686 transitions. [2022-11-03 04:08:51,582 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 686 transitions. Word has length 310 [2022-11-03 04:08:51,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:51,583 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 686 transitions. [2022-11-03 04:08:51,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2022-11-03 04:08:51,583 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 686 transitions. [2022-11-03 04:08:51,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:08:51,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:51,586 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:08:51,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:51,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:51,803 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:51,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:51,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1981826051, now seen corresponding path program 1 times [2022-11-03 04:08:51,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:51,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931491785] [2022-11-03 04:08:51,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:51,805 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:51,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:51,807 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:51,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-03 04:08:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:52,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:08:52,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:53,006 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:53,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:53,006 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:53,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931491785] [2022-11-03 04:08:53,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931491785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:53,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:53,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:08:53,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663549686] [2022-11-03 04:08:53,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:53,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:08:53,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:53,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:08:53,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:08:53,009 INFO L87 Difference]: Start difference. First operand 515 states and 686 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 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) [2022-11-03 04:08:53,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:53,277 INFO L93 Difference]: Finished difference Result 848 states and 1139 transitions. [2022-11-03 04:08:53,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:08:53,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 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 310 [2022-11-03 04:08:53,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:53,279 INFO L225 Difference]: With dead ends: 848 [2022-11-03 04:08:53,280 INFO L226 Difference]: Without dead ends: 557 [2022-11-03 04:08:53,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:08:53,281 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 79 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:53,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1426 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 45 Unchecked, 0.2s Time] [2022-11-03 04:08:53,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-11-03 04:08:53,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2022-11-03 04:08:53,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 556 states have (on average 1.329136690647482) internal successors, (739), 556 states have internal predecessors, (739), 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) [2022-11-03 04:08:53,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 739 transitions. [2022-11-03 04:08:53,299 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 739 transitions. Word has length 310 [2022-11-03 04:08:53,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:53,302 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 739 transitions. [2022-11-03 04:08:53,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 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) [2022-11-03 04:08:53,302 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 739 transitions. [2022-11-03 04:08:53,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:08:53,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:53,305 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:08:53,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:53,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:53,519 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:53,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:53,519 INFO L85 PathProgramCache]: Analyzing trace with hash 98757627, now seen corresponding path program 1 times [2022-11-03 04:08:53,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:53,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491313885] [2022-11-03 04:08:53,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:53,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:53,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:53,522 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:53,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-03 04:08:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:54,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:08:54,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:54,691 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:54,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:54,692 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:54,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491313885] [2022-11-03 04:08:54,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491313885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:54,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:54,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:08:54,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995121392] [2022-11-03 04:08:54,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:54,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:08:54,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:54,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:08:54,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:08:54,695 INFO L87 Difference]: Start difference. First operand 557 states and 739 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 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) [2022-11-03 04:08:55,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:55,229 INFO L93 Difference]: Finished difference Result 1408 states and 1901 transitions. [2022-11-03 04:08:55,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:08:55,230 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 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 310 [2022-11-03 04:08:55,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:55,232 INFO L225 Difference]: With dead ends: 1408 [2022-11-03 04:08:55,232 INFO L226 Difference]: Without dead ends: 1117 [2022-11-03 04:08:55,233 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:08:55,234 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 889 mSDsluCounter, 2198 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:55,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 2654 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 30 Unchecked, 0.5s Time] [2022-11-03 04:08:55,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2022-11-03 04:08:55,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 567. [2022-11-03 04:08:55,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 1.325088339222615) internal successors, (750), 566 states have internal predecessors, (750), 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) [2022-11-03 04:08:55,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 750 transitions. [2022-11-03 04:08:55,263 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 750 transitions. Word has length 310 [2022-11-03 04:08:55,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:55,264 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 750 transitions. [2022-11-03 04:08:55,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 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) [2022-11-03 04:08:55,264 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 750 transitions. [2022-11-03 04:08:55,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:08:55,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:55,267 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:08:55,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2022-11-03 04:08:55,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:55,483 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:55,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:55,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1686645635, now seen corresponding path program 1 times [2022-11-03 04:08:55,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:55,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629458505] [2022-11-03 04:08:55,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:55,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:55,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:55,487 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:55,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-03 04:08:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:56,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-03 04:08:56,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:57,562 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:08:57,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:08:57,563 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:57,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629458505] [2022-11-03 04:08:57,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629458505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:08:57,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:08:57,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:08:57,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713198505] [2022-11-03 04:08:57,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:08:57,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:08:57,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:57,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:08:57,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:08:57,565 INFO L87 Difference]: Start difference. First operand 567 states and 750 transitions. Second operand has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 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) [2022-11-03 04:08:58,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:58,267 INFO L93 Difference]: Finished difference Result 1399 states and 1892 transitions. [2022-11-03 04:08:58,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:08:58,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 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 310 [2022-11-03 04:08:58,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:58,270 INFO L225 Difference]: With dead ends: 1399 [2022-11-03 04:08:58,270 INFO L226 Difference]: Without dead ends: 1108 [2022-11-03 04:08:58,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:08:58,272 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 1403 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:58,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 1495 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 04:08:58,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2022-11-03 04:08:58,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 699. [2022-11-03 04:08:58,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.320916905444126) internal successors, (922), 698 states have internal predecessors, (922), 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) [2022-11-03 04:08:58,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 922 transitions. [2022-11-03 04:08:58,301 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 922 transitions. Word has length 310 [2022-11-03 04:08:58,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:58,301 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 922 transitions. [2022-11-03 04:08:58,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 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) [2022-11-03 04:08:58,302 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 922 transitions. [2022-11-03 04:08:58,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:08:58,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:58,305 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:08:58,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:58,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:58,519 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:58,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:58,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1563363969, now seen corresponding path program 1 times [2022-11-03 04:08:58,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:58,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2097934275] [2022-11-03 04:08:58,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:58,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:58,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:58,522 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:58,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-03 04:08:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:59,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 201 conjunts are in the unsatisfiable core [2022-11-03 04:08:59,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:09:16,462 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:09:16,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:09:16,463 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:09:16,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2097934275] [2022-11-03 04:09:16,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2097934275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:16,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:09:16,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 04:09:16,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869202163] [2022-11-03 04:09:16,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:16,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 04:09:16,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:09:16,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 04:09:16,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:09:16,465 INFO L87 Difference]: Start difference. First operand 699 states and 922 transitions. Second operand has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 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) [2022-11-03 04:09:19,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:19,236 INFO L93 Difference]: Finished difference Result 2276 states and 3049 transitions. [2022-11-03 04:09:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 04:09:19,240 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 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 310 [2022-11-03 04:09:19,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:19,247 INFO L225 Difference]: With dead ends: 2276 [2022-11-03 04:09:19,247 INFO L226 Difference]: Without dead ends: 1951 [2022-11-03 04:09:19,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-11-03 04:09:19,249 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 2902 mSDsluCounter, 5020 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2902 SdHoareTripleChecker+Valid, 5426 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:19,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2902 Valid, 5426 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 243 Invalid, 0 Unknown, 157 Unchecked, 0.9s Time] [2022-11-03 04:09:19,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2022-11-03 04:09:19,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 875. [2022-11-03 04:09:19,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 1.294050343249428) internal successors, (1131), 874 states have internal predecessors, (1131), 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) [2022-11-03 04:09:19,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1131 transitions. [2022-11-03 04:09:19,313 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1131 transitions. Word has length 310 [2022-11-03 04:09:19,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:19,313 INFO L495 AbstractCegarLoop]: Abstraction has 875 states and 1131 transitions. [2022-11-03 04:09:19,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 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) [2022-11-03 04:09:19,314 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1131 transitions. [2022-11-03 04:09:19,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:09:19,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:19,318 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:09:19,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-03 04:09:19,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:09:19,532 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:19,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:19,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1571362943, now seen corresponding path program 1 times [2022-11-03 04:09:19,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:09:19,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [219518551] [2022-11-03 04:09:19,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:19,535 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:09:19,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:09:19,536 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:09:19,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-03 04:09:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:20,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 221 conjunts are in the unsatisfiable core [2022-11-03 04:09:20,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:09:39,470 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:09:39,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:09:39,471 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:09:39,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [219518551] [2022-11-03 04:09:39,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [219518551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:39,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:09:39,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 04:09:39,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053183880] [2022-11-03 04:09:39,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:39,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 04:09:39,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:09:39,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 04:09:39,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:09:39,474 INFO L87 Difference]: Start difference. First operand 875 states and 1131 transitions. Second operand has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 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) [2022-11-03 04:09:42,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:42,794 INFO L93 Difference]: Finished difference Result 2500 states and 3376 transitions. [2022-11-03 04:09:42,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 04:09:42,796 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 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 310 [2022-11-03 04:09:42,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:42,800 INFO L225 Difference]: With dead ends: 2500 [2022-11-03 04:09:42,800 INFO L226 Difference]: Without dead ends: 2175 [2022-11-03 04:09:42,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2022-11-03 04:09:42,802 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 3227 mSDsluCounter, 5519 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3227 SdHoareTripleChecker+Valid, 5967 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 106 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:42,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3227 Valid, 5967 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 364 Invalid, 0 Unknown, 106 Unchecked, 1.3s Time] [2022-11-03 04:09:42,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2175 states. [2022-11-03 04:09:42,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2175 to 877. [2022-11-03 04:09:42,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 876 states have (on average 1.29337899543379) internal successors, (1133), 876 states have internal predecessors, (1133), 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) [2022-11-03 04:09:42,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1133 transitions. [2022-11-03 04:09:42,841 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1133 transitions. Word has length 310 [2022-11-03 04:09:42,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:42,842 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1133 transitions. [2022-11-03 04:09:42,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.142857142857142) internal successors, (310), 14 states have internal predecessors, (310), 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) [2022-11-03 04:09:42,842 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1133 transitions. [2022-11-03 04:09:42,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:09:42,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:42,846 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:09:42,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-03 04:09:43,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:09:43,063 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:43,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:43,063 INFO L85 PathProgramCache]: Analyzing trace with hash -413830653, now seen corresponding path program 1 times [2022-11-03 04:09:43,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:09:43,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451066424] [2022-11-03 04:09:43,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:43,065 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:09:43,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:09:43,067 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:09:43,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-03 04:09:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:44,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-03 04:09:44,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:09:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:09:48,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:09:48,656 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:09:48,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451066424] [2022-11-03 04:09:48,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451066424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:09:48,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:09:48,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-03 04:09:48,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639316242] [2022-11-03 04:09:48,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:09:48,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 04:09:48,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:09:48,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 04:09:48,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=505, Unknown=0, NotChecked=0, Total=552 [2022-11-03 04:09:48,659 INFO L87 Difference]: Start difference. First operand 877 states and 1133 transitions. Second operand has 24 states, 24 states have (on average 12.916666666666666) internal successors, (310), 24 states have internal predecessors, (310), 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) [2022-11-03 04:09:49,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:49,272 INFO L93 Difference]: Finished difference Result 1901 states and 2506 transitions. [2022-11-03 04:09:49,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 04:09:49,272 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 12.916666666666666) internal successors, (310), 24 states have internal predecessors, (310), 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 310 [2022-11-03 04:09:49,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:49,275 INFO L225 Difference]: With dead ends: 1901 [2022-11-03 04:09:49,275 INFO L226 Difference]: Without dead ends: 1576 [2022-11-03 04:09:49,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=56, Invalid=594, Unknown=0, NotChecked=0, Total=650 [2022-11-03 04:09:49,277 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 861 mSDsluCounter, 8322 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 8728 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 962 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:49,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 8728 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 962 Unchecked, 0.4s Time] [2022-11-03 04:09:49,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2022-11-03 04:09:49,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1065. [2022-11-03 04:09:49,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1065 states, 1064 states have (on average 1.281954887218045) internal successors, (1364), 1064 states have internal predecessors, (1364), 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) [2022-11-03 04:09:49,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1364 transitions. [2022-11-03 04:09:49,312 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1364 transitions. Word has length 310 [2022-11-03 04:09:49,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:49,313 INFO L495 AbstractCegarLoop]: Abstraction has 1065 states and 1364 transitions. [2022-11-03 04:09:49,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 12.916666666666666) internal successors, (310), 24 states have internal predecessors, (310), 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) [2022-11-03 04:09:49,313 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1364 transitions. [2022-11-03 04:09:49,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:09:49,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:49,317 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:09:49,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2022-11-03 04:09:49,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:09:49,531 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:49,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:49,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1229877883, now seen corresponding path program 1 times [2022-11-03 04:09:49,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:09:49,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446126208] [2022-11-03 04:09:49,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:49,534 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:09:49,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:09:49,535 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:09:49,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-03 04:09:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:50,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 224 conjunts are in the unsatisfiable core [2022-11-03 04:09:50,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:17,310 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:10:17,310 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:10:17,310 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:10:17,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446126208] [2022-11-03 04:10:17,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446126208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:17,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:17,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-03 04:10:17,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127338006] [2022-11-03 04:10:17,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:17,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 04:10:17,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:10:17,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 04:10:17,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2022-11-03 04:10:17,313 INFO L87 Difference]: Start difference. First operand 1065 states and 1364 transitions. Second operand has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 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) [2022-11-03 04:10:17,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:17,935 INFO L93 Difference]: Finished difference Result 2098 states and 2786 transitions. [2022-11-03 04:10:17,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 04:10:17,937 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 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 310 [2022-11-03 04:10:17,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:17,940 INFO L225 Difference]: With dead ends: 2098 [2022-11-03 04:10:17,940 INFO L226 Difference]: Without dead ends: 1773 [2022-11-03 04:10:17,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2022-11-03 04:10:17,942 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 983 mSDsluCounter, 7676 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 7984 SdHoareTripleChecker+Invalid, 981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 927 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:17,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 7984 Invalid, 981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 927 Unchecked, 0.2s Time] [2022-11-03 04:10:17,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2022-11-03 04:10:17,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1187. [2022-11-03 04:10:17,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1186 states have (on average 1.279089376053963) internal successors, (1517), 1186 states have internal predecessors, (1517), 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) [2022-11-03 04:10:17,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1517 transitions. [2022-11-03 04:10:17,982 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1517 transitions. Word has length 310 [2022-11-03 04:10:17,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:17,983 INFO L495 AbstractCegarLoop]: Abstraction has 1187 states and 1517 transitions. [2022-11-03 04:10:17,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 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) [2022-11-03 04:10:17,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1517 transitions. [2022-11-03 04:10:17,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:10:17,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:17,992 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:10:18,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-03 04:10:18,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:10:18,211 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:18,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:18,211 INFO L85 PathProgramCache]: Analyzing trace with hash 369271175, now seen corresponding path program 1 times [2022-11-03 04:10:18,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:10:18,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588487470] [2022-11-03 04:10:18,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:18,214 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:10:18,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:10:18,216 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:10:18,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-03 04:10:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:19,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:10:19,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:10:19,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:10:19,489 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:10:19,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588487470] [2022-11-03 04:10:19,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588487470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:19,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:19,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:10:19,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170840356] [2022-11-03 04:10:19,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:19,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:10:19,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:10:19,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:10:19,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:10:19,491 INFO L87 Difference]: Start difference. First operand 1187 states and 1517 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2022-11-03 04:10:19,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:19,735 INFO L93 Difference]: Finished difference Result 1543 states and 2011 transitions. [2022-11-03 04:10:19,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:10:19,735 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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 310 [2022-11-03 04:10:19,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:19,738 INFO L225 Difference]: With dead ends: 1543 [2022-11-03 04:10:19,738 INFO L226 Difference]: Without dead ends: 1218 [2022-11-03 04:10:19,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:10:19,739 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 463 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:19,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 649 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:10:19,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2022-11-03 04:10:19,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1187. [2022-11-03 04:10:19,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1186 states have (on average 1.2782462057335582) internal successors, (1516), 1186 states have internal predecessors, (1516), 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) [2022-11-03 04:10:19,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1516 transitions. [2022-11-03 04:10:19,794 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1516 transitions. Word has length 310 [2022-11-03 04:10:19,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:19,794 INFO L495 AbstractCegarLoop]: Abstraction has 1187 states and 1516 transitions. [2022-11-03 04:10:19,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2022-11-03 04:10:19,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1516 transitions. [2022-11-03 04:10:19,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:10:19,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:19,799 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:10:19,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-03 04:10:20,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:10:20,023 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:20,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:20,023 INFO L85 PathProgramCache]: Analyzing trace with hash 459331465, now seen corresponding path program 1 times [2022-11-03 04:10:20,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:10:20,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527937992] [2022-11-03 04:10:20,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:20,025 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:10:20,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:10:20,026 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:10:20,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-03 04:10:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:20,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:10:20,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:10:21,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:10:21,177 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:10:21,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527937992] [2022-11-03 04:10:21,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527937992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:21,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:21,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:10:21,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973203322] [2022-11-03 04:10:21,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:21,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:10:21,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:10:21,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:10:21,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:10:21,180 INFO L87 Difference]: Start difference. First operand 1187 states and 1516 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2022-11-03 04:10:21,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:21,411 INFO L93 Difference]: Finished difference Result 1547 states and 2014 transitions. [2022-11-03 04:10:21,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:10:21,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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 310 [2022-11-03 04:10:21,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:21,415 INFO L225 Difference]: With dead ends: 1547 [2022-11-03 04:10:21,415 INFO L226 Difference]: Without dead ends: 1222 [2022-11-03 04:10:21,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:10:21,417 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 457 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:21,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 656 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:10:21,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2022-11-03 04:10:21,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1187. [2022-11-03 04:10:21,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1186 states have (on average 1.2774030354131534) internal successors, (1515), 1186 states have internal predecessors, (1515), 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) [2022-11-03 04:10:21,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1515 transitions. [2022-11-03 04:10:21,449 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1515 transitions. Word has length 310 [2022-11-03 04:10:21,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:21,450 INFO L495 AbstractCegarLoop]: Abstraction has 1187 states and 1515 transitions. [2022-11-03 04:10:21,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2022-11-03 04:10:21,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1515 transitions. [2022-11-03 04:10:21,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:10:21,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:21,454 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:10:21,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-11-03 04:10:21,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:10:21,679 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:21,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:21,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1463918965, now seen corresponding path program 1 times [2022-11-03 04:10:21,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:10:21,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005186620] [2022-11-03 04:10:21,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:21,681 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:10:21,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:10:21,682 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:10:21,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-03 04:10:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:22,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:10:22,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:22,856 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:10:22,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:10:22,856 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:10:22,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005186620] [2022-11-03 04:10:22,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005186620] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:22,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:22,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:10:22,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392357746] [2022-11-03 04:10:22,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:22,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:10:22,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:10:22,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:10:22,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:10:22,859 INFO L87 Difference]: Start difference. First operand 1187 states and 1515 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 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) [2022-11-03 04:10:23,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:23,240 INFO L93 Difference]: Finished difference Result 2147 states and 2832 transitions. [2022-11-03 04:10:23,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 04:10:23,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 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 310 [2022-11-03 04:10:23,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:23,244 INFO L225 Difference]: With dead ends: 2147 [2022-11-03 04:10:23,245 INFO L226 Difference]: Without dead ends: 1822 [2022-11-03 04:10:23,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:10:23,246 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 1103 mSDsluCounter, 1458 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 1954 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:23,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 1954 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 31 Unchecked, 0.3s Time] [2022-11-03 04:10:23,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2022-11-03 04:10:23,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1229. [2022-11-03 04:10:23,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1228 states have (on average 1.281758957654723) internal successors, (1574), 1228 states have internal predecessors, (1574), 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) [2022-11-03 04:10:23,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1574 transitions. [2022-11-03 04:10:23,271 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1574 transitions. Word has length 310 [2022-11-03 04:10:23,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:23,271 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 1574 transitions. [2022-11-03 04:10:23,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 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) [2022-11-03 04:10:23,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1574 transitions. [2022-11-03 04:10:23,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:10:23,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:23,278 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:10:23,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-03 04:10:23,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:10:23,503 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:23,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:23,504 INFO L85 PathProgramCache]: Analyzing trace with hash -796537075, now seen corresponding path program 1 times [2022-11-03 04:10:23,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:10:23,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875640220] [2022-11-03 04:10:23,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:23,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:10:23,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:10:23,508 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:10:23,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-03 04:10:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:24,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:10:24,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:10:24,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:10:24,687 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:10:24,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875640220] [2022-11-03 04:10:24,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875640220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:24,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:24,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:10:24,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732223793] [2022-11-03 04:10:24,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:24,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:10:24,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:10:24,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:10:24,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:10:24,689 INFO L87 Difference]: Start difference. First operand 1229 states and 1574 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2022-11-03 04:10:24,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:24,913 INFO L93 Difference]: Finished difference Result 1575 states and 2050 transitions. [2022-11-03 04:10:24,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:10:24,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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 310 [2022-11-03 04:10:24,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:24,919 INFO L225 Difference]: With dead ends: 1575 [2022-11-03 04:10:24,919 INFO L226 Difference]: Without dead ends: 1250 [2022-11-03 04:10:24,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:10:24,921 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 443 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:24,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 683 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:10:24,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2022-11-03 04:10:24,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1229. [2022-11-03 04:10:24,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1228 states have (on average 1.2809446254071661) internal successors, (1573), 1228 states have internal predecessors, (1573), 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) [2022-11-03 04:10:24,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1573 transitions. [2022-11-03 04:10:24,953 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1573 transitions. Word has length 310 [2022-11-03 04:10:24,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:24,954 INFO L495 AbstractCegarLoop]: Abstraction has 1229 states and 1573 transitions. [2022-11-03 04:10:24,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2022-11-03 04:10:24,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1573 transitions. [2022-11-03 04:10:24,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:10:24,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:24,958 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:10:24,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-03 04:10:25,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:10:25,183 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:25,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:25,183 INFO L85 PathProgramCache]: Analyzing trace with hash 2093238543, now seen corresponding path program 1 times [2022-11-03 04:10:25,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:10:25,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1782310756] [2022-11-03 04:10:25,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:25,185 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:10:25,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:10:25,188 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:10:25,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-03 04:10:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:26,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 04:10:26,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:26,974 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:10:26,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:10:26,974 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:10:26,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1782310756] [2022-11-03 04:10:26,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1782310756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:26,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:26,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:10:26,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830777585] [2022-11-03 04:10:26,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:26,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:10:26,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:10:26,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:10:26,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:10:26,977 INFO L87 Difference]: Start difference. First operand 1229 states and 1573 transitions. Second operand has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 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) [2022-11-03 04:10:27,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:27,516 INFO L93 Difference]: Finished difference Result 1906 states and 2501 transitions. [2022-11-03 04:10:27,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:10:27,517 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 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 310 [2022-11-03 04:10:27,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:27,519 INFO L225 Difference]: With dead ends: 1906 [2022-11-03 04:10:27,520 INFO L226 Difference]: Without dead ends: 1581 [2022-11-03 04:10:27,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:10:27,521 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 1095 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:27,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 1680 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 04:10:27,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2022-11-03 04:10:27,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1231. [2022-11-03 04:10:27,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1231 states, 1230 states have (on average 1.2804878048780488) internal successors, (1575), 1230 states have internal predecessors, (1575), 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) [2022-11-03 04:10:27,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1575 transitions. [2022-11-03 04:10:27,554 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1575 transitions. Word has length 310 [2022-11-03 04:10:27,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:27,554 INFO L495 AbstractCegarLoop]: Abstraction has 1231 states and 1575 transitions. [2022-11-03 04:10:27,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.666666666666664) internal successors, (310), 6 states have internal predecessors, (310), 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) [2022-11-03 04:10:27,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1575 transitions. [2022-11-03 04:10:27,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:10:27,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:27,558 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:10:27,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-03 04:10:27,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:10:27,784 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:27,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:27,785 INFO L85 PathProgramCache]: Analyzing trace with hash -270603119, now seen corresponding path program 1 times [2022-11-03 04:10:27,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:10:27,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10807715] [2022-11-03 04:10:27,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:27,787 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:10:27,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:10:27,788 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:10:27,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-03 04:10:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:28,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 224 conjunts are in the unsatisfiable core [2022-11-03 04:10:28,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:53,916 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:10:53,916 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:10:53,917 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:10:53,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10807715] [2022-11-03 04:10:53,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10807715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:53,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:53,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-03 04:10:53,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953908126] [2022-11-03 04:10:53,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:53,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 04:10:53,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:10:53,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 04:10:53,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=701, Unknown=0, NotChecked=0, Total=756 [2022-11-03 04:10:53,920 INFO L87 Difference]: Start difference. First operand 1231 states and 1575 transitions. Second operand has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 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) [2022-11-03 04:10:54,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:54,305 INFO L93 Difference]: Finished difference Result 2108 states and 2774 transitions. [2022-11-03 04:10:54,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 04:10:54,305 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 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 310 [2022-11-03 04:10:54,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:54,307 INFO L225 Difference]: With dead ends: 2108 [2022-11-03 04:10:54,307 INFO L226 Difference]: Without dead ends: 1781 [2022-11-03 04:10:54,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=70, Invalid=860, Unknown=0, NotChecked=0, Total=930 [2022-11-03 04:10:54,309 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 774 mSDsluCounter, 7511 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 7816 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 764 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:54,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 7816 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 764 Unchecked, 0.1s Time] [2022-11-03 04:10:54,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1781 states. [2022-11-03 04:10:54,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1781 to 1285. [2022-11-03 04:10:54,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1284 states have (on average 1.2834890965732086) internal successors, (1648), 1284 states have internal predecessors, (1648), 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) [2022-11-03 04:10:54,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1648 transitions. [2022-11-03 04:10:54,336 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1648 transitions. Word has length 310 [2022-11-03 04:10:54,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:54,336 INFO L495 AbstractCegarLoop]: Abstraction has 1285 states and 1648 transitions. [2022-11-03 04:10:54,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.071428571428571) internal successors, (310), 28 states have internal predecessors, (310), 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) [2022-11-03 04:10:54,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1648 transitions. [2022-11-03 04:10:54,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:10:54,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:54,340 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:10:54,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-03 04:10:54,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:10:54,559 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:54,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:54,559 INFO L85 PathProgramCache]: Analyzing trace with hash -426583661, now seen corresponding path program 1 times [2022-11-03 04:10:54,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:10:54,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716539708] [2022-11-03 04:10:54,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:54,561 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:10:54,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:10:54,562 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:10:54,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-03 04:10:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:55,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 04:10:55,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:55,766 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:10:55,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:10:55,766 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:10:55,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716539708] [2022-11-03 04:10:55,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716539708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:55,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:55,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:10:55,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262189229] [2022-11-03 04:10:55,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:55,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:10:55,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:10:55,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:10:55,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:10:55,769 INFO L87 Difference]: Start difference. First operand 1285 states and 1648 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 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) [2022-11-03 04:10:56,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:56,485 INFO L93 Difference]: Finished difference Result 2384 states and 3152 transitions. [2022-11-03 04:10:56,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 04:10:56,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 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 310 [2022-11-03 04:10:56,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:56,487 INFO L225 Difference]: With dead ends: 2384 [2022-11-03 04:10:56,487 INFO L226 Difference]: Without dead ends: 2057 [2022-11-03 04:10:56,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-11-03 04:10:56,489 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 1807 mSDsluCounter, 2025 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1807 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:56,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1807 Valid, 2525 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 04:10:56,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2022-11-03 04:10:56,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 1343. [2022-11-03 04:10:56,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1342 states have (on average 1.2868852459016393) internal successors, (1727), 1342 states have internal predecessors, (1727), 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) [2022-11-03 04:10:56,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1727 transitions. [2022-11-03 04:10:56,515 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1727 transitions. Word has length 310 [2022-11-03 04:10:56,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:56,516 INFO L495 AbstractCegarLoop]: Abstraction has 1343 states and 1727 transitions. [2022-11-03 04:10:56,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 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) [2022-11-03 04:10:56,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1727 transitions. [2022-11-03 04:10:56,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:10:56,518 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:56,519 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:10:56,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2022-11-03 04:10:56,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:10:56,720 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:56,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:56,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2080513813, now seen corresponding path program 1 times [2022-11-03 04:10:56,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:10:56,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578388509] [2022-11-03 04:10:56,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:56,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:10:56,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:10:56,723 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:10:56,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-03 04:10:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:57,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:10:57,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:10:57,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:10:57,785 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:10:57,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578388509] [2022-11-03 04:10:57,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578388509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:57,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:57,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:10:57,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142974609] [2022-11-03 04:10:57,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:57,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:10:57,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:10:57,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:10:57,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:10:57,787 INFO L87 Difference]: Start difference. First operand 1343 states and 1727 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2022-11-03 04:10:58,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:58,009 INFO L93 Difference]: Finished difference Result 1773 states and 2317 transitions. [2022-11-03 04:10:58,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:10:58,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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 310 [2022-11-03 04:10:58,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:58,011 INFO L225 Difference]: With dead ends: 1773 [2022-11-03 04:10:58,011 INFO L226 Difference]: Without dead ends: 1408 [2022-11-03 04:10:58,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:10:58,012 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 421 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:58,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 738 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:10:58,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2022-11-03 04:10:58,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1343. [2022-11-03 04:10:58,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1342 states have (on average 1.286140089418778) internal successors, (1726), 1342 states have internal predecessors, (1726), 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) [2022-11-03 04:10:58,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1726 transitions. [2022-11-03 04:10:58,033 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1726 transitions. Word has length 310 [2022-11-03 04:10:58,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:58,034 INFO L495 AbstractCegarLoop]: Abstraction has 1343 states and 1726 transitions. [2022-11-03 04:10:58,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2022-11-03 04:10:58,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1726 transitions. [2022-11-03 04:10:58,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:10:58,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:58,037 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:10:58,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2022-11-03 04:10:58,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:10:58,251 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:58,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:58,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1850986985, now seen corresponding path program 1 times [2022-11-03 04:10:58,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:10:58,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709668272] [2022-11-03 04:10:58,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:58,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:10:58,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:10:58,254 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:10:58,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-03 04:10:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:59,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 04:10:59,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:59,377 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:10:59,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:10:59,377 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:10:59,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709668272] [2022-11-03 04:10:59,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709668272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:10:59,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:10:59,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:10:59,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385678986] [2022-11-03 04:10:59,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:10:59,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:10:59,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:10:59,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:10:59,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:10:59,379 INFO L87 Difference]: Start difference. First operand 1343 states and 1726 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2022-11-03 04:10:59,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:59,622 INFO L93 Difference]: Finished difference Result 1783 states and 2329 transitions. [2022-11-03 04:10:59,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 04:10:59,623 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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 310 [2022-11-03 04:10:59,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:59,624 INFO L225 Difference]: With dead ends: 1783 [2022-11-03 04:10:59,624 INFO L226 Difference]: Without dead ends: 1418 [2022-11-03 04:10:59,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:10:59,625 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 409 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:59,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 761 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:10:59,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1418 states. [2022-11-03 04:10:59,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1418 to 1343. [2022-11-03 04:10:59,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 1342 states have (on average 1.2853949329359164) internal successors, (1725), 1342 states have internal predecessors, (1725), 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) [2022-11-03 04:10:59,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1725 transitions. [2022-11-03 04:10:59,649 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1725 transitions. Word has length 310 [2022-11-03 04:10:59,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:59,649 INFO L495 AbstractCegarLoop]: Abstraction has 1343 states and 1725 transitions. [2022-11-03 04:10:59,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2022-11-03 04:10:59,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1725 transitions. [2022-11-03 04:10:59,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:10:59,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:59,651 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:10:59,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-11-03 04:10:59,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:10:59,852 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:59,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:59,852 INFO L85 PathProgramCache]: Analyzing trace with hash -989153383, now seen corresponding path program 1 times [2022-11-03 04:10:59,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:10:59,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075762689] [2022-11-03 04:10:59,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:59,854 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:10:59,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:10:59,855 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:10:59,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-03 04:11:00,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:00,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-03 04:11:00,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:05,896 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:11:05,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:11:05,897 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:11:05,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075762689] [2022-11-03 04:11:05,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075762689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:05,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:05,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-03 04:11:05,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303156656] [2022-11-03 04:11:05,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:05,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-03 04:11:05,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:11:05,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-03 04:11:05,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2022-11-03 04:11:05,899 INFO L87 Difference]: Start difference. First operand 1343 states and 1725 transitions. Second operand has 26 states, 26 states have (on average 11.923076923076923) internal successors, (310), 26 states have internal predecessors, (310), 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) [2022-11-03 04:11:05,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:05,944 INFO L93 Difference]: Finished difference Result 1819 states and 2375 transitions. [2022-11-03 04:11:05,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-03 04:11:05,945 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 11.923076923076923) internal successors, (310), 26 states have internal predecessors, (310), 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 310 [2022-11-03 04:11:05,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:05,947 INFO L225 Difference]: With dead ends: 1819 [2022-11-03 04:11:05,947 INFO L226 Difference]: Without dead ends: 1454 [2022-11-03 04:11:05,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=53, Invalid=597, Unknown=0, NotChecked=0, Total=650 [2022-11-03 04:11:05,948 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 164 mSDsluCounter, 6031 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 6302 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 234 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:05,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 6302 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 234 Unchecked, 0.0s Time] [2022-11-03 04:11:05,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2022-11-03 04:11:05,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1445. [2022-11-03 04:11:05,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1444 states have (on average 1.290858725761773) internal successors, (1864), 1444 states have internal predecessors, (1864), 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) [2022-11-03 04:11:05,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 1864 transitions. [2022-11-03 04:11:05,976 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 1864 transitions. Word has length 310 [2022-11-03 04:11:05,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:05,976 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 1864 transitions. [2022-11-03 04:11:05,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 11.923076923076923) internal successors, (310), 26 states have internal predecessors, (310), 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) [2022-11-03 04:11:05,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 1864 transitions. [2022-11-03 04:11:05,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:11:05,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:05,979 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:11:06,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2022-11-03 04:11:06,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:11:06,180 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:11:06,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:06,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2023641627, now seen corresponding path program 1 times [2022-11-03 04:11:06,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:11:06,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362626319] [2022-11-03 04:11:06,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:06,183 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:11:06,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:11:06,194 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:11:06,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-03 04:11:07,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:07,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:11:07,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:11:07,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:11:07,546 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:11:07,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362626319] [2022-11-03 04:11:07,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362626319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:07,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:11:07,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:11:07,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238941594] [2022-11-03 04:11:07,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:07,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:11:07,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:11:07,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:11:07,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:11:07,549 INFO L87 Difference]: Start difference. First operand 1445 states and 1864 transitions. Second operand has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 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) [2022-11-03 04:11:07,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:07,990 INFO L93 Difference]: Finished difference Result 2465 states and 3248 transitions. [2022-11-03 04:11:07,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 04:11:07,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 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 310 [2022-11-03 04:11:07,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:07,993 INFO L225 Difference]: With dead ends: 2465 [2022-11-03 04:11:07,994 INFO L226 Difference]: Without dead ends: 2100 [2022-11-03 04:11:07,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:11:07,996 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 789 mSDsluCounter, 2047 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:07,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 2600 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 30 Unchecked, 0.4s Time] [2022-11-03 04:11:07,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2022-11-03 04:11:08,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1509. [2022-11-03 04:11:08,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1508 states have (on average 1.2937665782493368) internal successors, (1951), 1508 states have internal predecessors, (1951), 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) [2022-11-03 04:11:08,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 1951 transitions. [2022-11-03 04:11:08,036 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 1951 transitions. Word has length 310 [2022-11-03 04:11:08,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:08,036 INFO L495 AbstractCegarLoop]: Abstraction has 1509 states and 1951 transitions. [2022-11-03 04:11:08,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 44.285714285714285) internal successors, (310), 7 states have internal predecessors, (310), 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) [2022-11-03 04:11:08,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 1951 transitions. [2022-11-03 04:11:08,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:11:08,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:08,040 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:11:08,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2022-11-03 04:11:08,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:11:08,264 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:11:08,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:08,265 INFO L85 PathProgramCache]: Analyzing trace with hash 301638941, now seen corresponding path program 1 times [2022-11-03 04:11:08,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:11:08,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997330219] [2022-11-03 04:11:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:08,268 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:11:08,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:11:08,269 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:11:08,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-03 04:11:09,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:09,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:11:09,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:11:10,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:11:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:11:12,721 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:11:12,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997330219] [2022-11-03 04:11:12,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997330219] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:11:12,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1599953925] [2022-11-03 04:11:12,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:12,721 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:11:12,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:11:12,723 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:11:12,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2022-11-03 04:11:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:14,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:11:14,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:14,220 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 04:11:14,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:11:14,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1599953925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:14,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:11:14,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 04:11:14,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144795311] [2022-11-03 04:11:14,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:14,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:11:14,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:11:14,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:11:14,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 04:11:14,223 INFO L87 Difference]: Start difference. First operand 1509 states and 1951 transitions. Second operand has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 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) [2022-11-03 04:11:14,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:14,359 INFO L93 Difference]: Finished difference Result 3418 states and 4523 transitions. [2022-11-03 04:11:14,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:11:14,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 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 310 [2022-11-03 04:11:14,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:14,363 INFO L225 Difference]: With dead ends: 3418 [2022-11-03 04:11:14,363 INFO L226 Difference]: Without dead ends: 3053 [2022-11-03 04:11:14,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 919 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:11:14,365 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 1437 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:14,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 1710 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:11:14,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2022-11-03 04:11:14,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 1525. [2022-11-03 04:11:14,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1525 states, 1524 states have (on average 1.2946194225721785) internal successors, (1973), 1524 states have internal predecessors, (1973), 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) [2022-11-03 04:11:14,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 1973 transitions. [2022-11-03 04:11:14,400 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 1973 transitions. Word has length 310 [2022-11-03 04:11:14,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:14,400 INFO L495 AbstractCegarLoop]: Abstraction has 1525 states and 1973 transitions. [2022-11-03 04:11:14,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 5 states have internal predecessors, (222), 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) [2022-11-03 04:11:14,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 1973 transitions. [2022-11-03 04:11:14,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:11:14,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:14,403 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:11:14,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Forceful destruction successful, exit code 0 [2022-11-03 04:11:14,625 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Ended with exit code 0 [2022-11-03 04:11:14,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:11:14,807 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:11:14,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:14,807 INFO L85 PathProgramCache]: Analyzing trace with hash 358897243, now seen corresponding path program 1 times [2022-11-03 04:11:14,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:11:14,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733726247] [2022-11-03 04:11:14,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:14,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:11:14,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:11:14,811 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:11:14,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-03 04:11:15,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:15,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:11:15,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:17,083 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:11:17,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:11:18,760 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 58 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:11:18,761 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:11:18,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733726247] [2022-11-03 04:11:18,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733726247] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:11:18,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [318271406] [2022-11-03 04:11:18,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:18,762 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:11:18,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:11:18,767 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:11:18,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (65)] Waiting until timeout for monitored process [2022-11-03 04:11:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:20,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 04:11:20,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:21,579 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:11:21,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:11:22,197 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:11:22,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [318271406] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:11:22,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364871993] [2022-11-03 04:11:22,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:22,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:11:22,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:11:22,199 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:11:22,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-11-03 04:11:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:22,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 04:11:22,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:23,728 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:11:23,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:11:24,206 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:11:24,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364871993] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:11:24,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:11:24,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 8, 8] total 19 [2022-11-03 04:11:24,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869732700] [2022-11-03 04:11:24,207 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:11:24,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 04:11:24,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:11:24,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 04:11:24,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:11:24,210 INFO L87 Difference]: Start difference. First operand 1525 states and 1973 transitions. Second operand has 19 states, 19 states have (on average 50.63157894736842) internal successors, (962), 19 states have internal predecessors, (962), 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) [2022-11-03 04:11:26,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:26,255 INFO L93 Difference]: Finished difference Result 4915 states and 6563 transitions. [2022-11-03 04:11:26,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 04:11:26,255 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 50.63157894736842) internal successors, (962), 19 states have internal predecessors, (962), 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 310 [2022-11-03 04:11:26,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:26,258 INFO L225 Difference]: With dead ends: 4915 [2022-11-03 04:11:26,259 INFO L226 Difference]: Without dead ends: 4534 [2022-11-03 04:11:26,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1879 GetRequests, 1839 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=435, Invalid=1287, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 04:11:26,261 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 4600 mSDsluCounter, 7331 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4600 SdHoareTripleChecker+Valid, 7624 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:26,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4600 Valid, 7624 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 538 Invalid, 0 Unknown, 173 Unchecked, 1.1s Time] [2022-11-03 04:11:26,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4534 states. [2022-11-03 04:11:26,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4534 to 2503. [2022-11-03 04:11:26,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 2502 states have (on average 1.3017585931254996) internal successors, (3257), 2502 states have internal predecessors, (3257), 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) [2022-11-03 04:11:26,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 3257 transitions. [2022-11-03 04:11:26,366 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 3257 transitions. Word has length 310 [2022-11-03 04:11:26,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:26,366 INFO L495 AbstractCegarLoop]: Abstraction has 2503 states and 3257 transitions. [2022-11-03 04:11:26,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 50.63157894736842) internal successors, (962), 19 states have internal predecessors, (962), 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) [2022-11-03 04:11:26,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 3257 transitions. [2022-11-03 04:11:26,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:11:26,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:26,372 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:11:26,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2022-11-03 04:11:26,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (65)] Ended with exit code 0 [2022-11-03 04:11:26,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-11-03 04:11:26,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:11:26,988 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:11:26,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:26,989 INFO L85 PathProgramCache]: Analyzing trace with hash -660575141, now seen corresponding path program 1 times [2022-11-03 04:11:26,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:11:26,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677279175] [2022-11-03 04:11:26,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:26,992 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:11:26,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:11:26,993 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:11:26,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-03 04:11:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:27,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 04:11:27,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:30,316 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:11:30,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:11:33,100 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:11:33,100 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:11:33,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677279175] [2022-11-03 04:11:33,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677279175] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:11:33,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [898599304] [2022-11-03 04:11:33,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:33,100 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:11:33,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:11:33,102 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:11:33,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (68)] Waiting until timeout for monitored process [2022-11-03 04:11:34,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:34,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:11:34,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 04:11:34,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:11:34,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [898599304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:34,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:11:34,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 04:11:34,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125647755] [2022-11-03 04:11:34,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:34,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:11:34,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:11:34,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:11:34,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 04:11:34,779 INFO L87 Difference]: Start difference. First operand 2503 states and 3257 transitions. Second operand has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 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) [2022-11-03 04:11:34,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:34,967 INFO L93 Difference]: Finished difference Result 4800 states and 6365 transitions. [2022-11-03 04:11:34,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:11:34,967 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 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 310 [2022-11-03 04:11:34,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:34,970 INFO L225 Difference]: With dead ends: 4800 [2022-11-03 04:11:34,970 INFO L226 Difference]: Without dead ends: 3895 [2022-11-03 04:11:34,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 932 GetRequests, 918 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:11:34,972 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 1082 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:34,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 1417 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:11:34,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3895 states. [2022-11-03 04:11:35,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3895 to 2511. [2022-11-03 04:11:35,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2511 states, 2510 states have (on average 1.300796812749004) internal successors, (3265), 2510 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) [2022-11-03 04:11:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3265 transitions. [2022-11-03 04:11:35,023 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3265 transitions. Word has length 310 [2022-11-03 04:11:35,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:35,023 INFO L495 AbstractCegarLoop]: Abstraction has 2511 states and 3265 transitions. [2022-11-03 04:11:35,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 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) [2022-11-03 04:11:35,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3265 transitions. [2022-11-03 04:11:35,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:11:35,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:35,027 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:11:35,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2022-11-03 04:11:35,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (68)] Forceful destruction successful, exit code 0 [2022-11-03 04:11:35,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:11:35,428 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:11:35,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:35,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1640247449, now seen corresponding path program 1 times [2022-11-03 04:11:35,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:11:35,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632280082] [2022-11-03 04:11:35,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:35,430 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:11:35,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:11:35,431 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:11:35,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-03 04:11:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:36,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 04:11:36,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:38,884 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:11:38,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:11:41,715 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:11:41,715 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:11:41,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632280082] [2022-11-03 04:11:41,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632280082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:11:41,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [382438963] [2022-11-03 04:11:41,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:41,716 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:11:41,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:11:41,719 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:11:41,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (70)] Waiting until timeout for monitored process [2022-11-03 04:11:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:43,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:11:43,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 04:11:43,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:11:43,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [382438963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:11:43,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:11:43,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 04:11:43,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656005498] [2022-11-03 04:11:43,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:11:43,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:11:43,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:11:43,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:11:43,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 04:11:43,391 INFO L87 Difference]: Start difference. First operand 2511 states and 3265 transitions. Second operand has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 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) [2022-11-03 04:11:43,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:43,588 INFO L93 Difference]: Finished difference Result 4848 states and 6421 transitions. [2022-11-03 04:11:43,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:11:43,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 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 310 [2022-11-03 04:11:43,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:43,593 INFO L225 Difference]: With dead ends: 4848 [2022-11-03 04:11:43,593 INFO L226 Difference]: Without dead ends: 3935 [2022-11-03 04:11:43,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 933 GetRequests, 919 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:11:43,596 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 1083 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:43,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1416 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:11:43,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3935 states. [2022-11-03 04:11:43,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3935 to 2559. [2022-11-03 04:11:43,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2559 states, 2558 states have (on average 1.3014073494917904) internal successors, (3329), 2558 states have internal predecessors, (3329), 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) [2022-11-03 04:11:43,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2559 states to 2559 states and 3329 transitions. [2022-11-03 04:11:43,672 INFO L78 Accepts]: Start accepts. Automaton has 2559 states and 3329 transitions. Word has length 310 [2022-11-03 04:11:43,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:43,673 INFO L495 AbstractCegarLoop]: Abstraction has 2559 states and 3329 transitions. [2022-11-03 04:11:43,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 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) [2022-11-03 04:11:43,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2559 states and 3329 transitions. [2022-11-03 04:11:43,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:11:43,678 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:43,678 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:11:43,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2022-11-03 04:11:43,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (70)] Ended with exit code 0 [2022-11-03 04:11:44,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:11:44,103 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:11:44,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:44,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1247220439, now seen corresponding path program 1 times [2022-11-03 04:11:44,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:11:44,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1408869062] [2022-11-03 04:11:44,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:44,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:11:44,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:11:44,106 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:11:44,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-03 04:11:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:44,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 04:11:44,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:47,414 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:11:47,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:11:49,838 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:11:49,838 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:11:49,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1408869062] [2022-11-03 04:11:49,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1408869062] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:11:49,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [978846616] [2022-11-03 04:11:49,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:49,839 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:11:49,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:11:49,844 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:11:49,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (72)] Waiting until timeout for monitored process [2022-11-03 04:11:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:51,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 04:11:51,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:53,699 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:11:53,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:11:59,613 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:11:59,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [978846616] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:11:59,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322561253] [2022-11-03 04:11:59,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:59,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:11:59,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:11:59,615 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:11:59,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-11-03 04:12:00,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:12:00,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 04:12:00,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:12:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 26 proven. 64 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 04:12:01,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:12:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 29 proven. 61 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 04:12:02,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322561253] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:12:02,282 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:12:02,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 7, 10, 10] total 27 [2022-11-03 04:12:02,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897552283] [2022-11-03 04:12:02,283 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:12:02,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-03 04:12:02,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:12:02,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-03 04:12:02,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2022-11-03 04:12:02,286 INFO L87 Difference]: Start difference. First operand 2559 states and 3329 transitions. Second operand has 27 states, 27 states have (on average 46.0) internal successors, (1242), 27 states have internal predecessors, (1242), 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) [2022-11-03 04:12:03,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:12:03,828 INFO L93 Difference]: Finished difference Result 6277 states and 8219 transitions. [2022-11-03 04:12:03,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 04:12:03,830 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 46.0) internal successors, (1242), 27 states have internal predecessors, (1242), 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 310 [2022-11-03 04:12:03,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:12:03,833 INFO L225 Difference]: With dead ends: 6277 [2022-11-03 04:12:03,833 INFO L226 Difference]: Without dead ends: 5316 [2022-11-03 04:12:03,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1869 GetRequests, 1832 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=359, Invalid=1123, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 04:12:03,835 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 2279 mSDsluCounter, 5592 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2279 SdHoareTripleChecker+Valid, 5883 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 170 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:12:03,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2279 Valid, 5883 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 169 Invalid, 0 Unknown, 170 Unchecked, 0.4s Time] [2022-11-03 04:12:03,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5316 states. [2022-11-03 04:12:03,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5316 to 4081. [2022-11-03 04:12:03,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4081 states, 4080 states have (on average 1.2926470588235295) internal successors, (5274), 4080 states have internal predecessors, (5274), 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) [2022-11-03 04:12:03,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4081 states to 4081 states and 5274 transitions. [2022-11-03 04:12:03,900 INFO L78 Accepts]: Start accepts. Automaton has 4081 states and 5274 transitions. Word has length 310 [2022-11-03 04:12:03,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:12:03,901 INFO L495 AbstractCegarLoop]: Abstraction has 4081 states and 5274 transitions. [2022-11-03 04:12:03,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 46.0) internal successors, (1242), 27 states have internal predecessors, (1242), 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) [2022-11-03 04:12:03,901 INFO L276 IsEmpty]: Start isEmpty. Operand 4081 states and 5274 transitions. [2022-11-03 04:12:03,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:12:03,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:12:03,905 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:12:03,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-11-03 04:12:04,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (72)] Forceful destruction successful, exit code 0 [2022-11-03 04:12:04,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Ended with exit code 0 [2022-11-03 04:12:04,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:12:04,506 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:12:04,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:12:04,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1756693529, now seen corresponding path program 1 times [2022-11-03 04:12:04,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:12:04,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141033523] [2022-11-03 04:12:04,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:12:04,509 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:12:04,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:12:04,509 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:12:04,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2022-11-03 04:12:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:12:05,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-03 04:12:05,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:12:13,145 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-03 04:12:13,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:12:18,547 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 04:12:18,547 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:12:18,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141033523] [2022-11-03 04:12:18,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141033523] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:12:18,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [662963745] [2022-11-03 04:12:18,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:12:18,548 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:12:18,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:12:18,555 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:12:18,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (75)] Waiting until timeout for monitored process [2022-11-03 04:12:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:12:20,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-03 04:12:20,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:12:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-03 04:12:28,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:12:31,666 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 04:12:31,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [662963745] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:12:31,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517260950] [2022-11-03 04:12:31,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:12:31,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:12:31,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:12:31,667 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:12:31,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-11-03 04:12:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:12:32,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-03 04:12:32,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:12:44,569 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-03 04:12:44,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:12:52,011 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 105 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:12:52,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517260950] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:12:52,012 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:12:52,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 17, 9, 23, 19] total 56 [2022-11-03 04:12:52,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688722919] [2022-11-03 04:12:52,012 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:12:52,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-03 04:12:52,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:12:52,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-03 04:12:52,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=2450, Unknown=0, NotChecked=0, Total=3080 [2022-11-03 04:12:52,016 INFO L87 Difference]: Start difference. First operand 4081 states and 5274 transitions. Second operand has 56 states, 56 states have (on average 15.553571428571429) internal successors, (871), 56 states have internal predecessors, (871), 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) [2022-11-03 04:12:55,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:12:55,674 INFO L93 Difference]: Finished difference Result 6182 states and 8042 transitions. [2022-11-03 04:12:55,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 04:12:55,675 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 15.553571428571429) internal successors, (871), 56 states have internal predecessors, (871), 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 310 [2022-11-03 04:12:55,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:12:55,678 INFO L225 Difference]: With dead ends: 6182 [2022-11-03 04:12:55,678 INFO L226 Difference]: Without dead ends: 6180 [2022-11-03 04:12:55,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1886 GetRequests, 1804 SyntacticMatches, 7 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1699 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=1019, Invalid=4833, Unknown=0, NotChecked=0, Total=5852 [2022-11-03 04:12:55,680 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 1335 mSDsluCounter, 8399 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 8638 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 810 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:12:55,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 8638 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 195 Invalid, 0 Unknown, 810 Unchecked, 0.4s Time] [2022-11-03 04:12:55,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6180 states. [2022-11-03 04:12:55,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6180 to 6000. [2022-11-03 04:12:55,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6000 states, 5999 states have (on average 1.3045507584597433) internal successors, (7826), 5999 states have internal predecessors, (7826), 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) [2022-11-03 04:12:55,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6000 states to 6000 states and 7826 transitions. [2022-11-03 04:12:55,846 INFO L78 Accepts]: Start accepts. Automaton has 6000 states and 7826 transitions. Word has length 310 [2022-11-03 04:12:55,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:12:55,847 INFO L495 AbstractCegarLoop]: Abstraction has 6000 states and 7826 transitions. [2022-11-03 04:12:55,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 15.553571428571429) internal successors, (871), 56 states have internal predecessors, (871), 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) [2022-11-03 04:12:55,847 INFO L276 IsEmpty]: Start isEmpty. Operand 6000 states and 7826 transitions. [2022-11-03 04:12:55,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:12:55,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:12:55,855 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:12:55,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (75)] Forceful destruction successful, exit code 0 [2022-11-03 04:12:56,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (74)] Ended with exit code 0 [2022-11-03 04:12:56,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-11-03 04:12:56,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:12:56,469 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:12:56,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:12:56,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1756753111, now seen corresponding path program 1 times [2022-11-03 04:12:56,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:12:56,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804070138] [2022-11-03 04:12:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:12:56,471 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:12:56,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:12:56,472 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:12:56,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2022-11-03 04:12:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:12:57,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:12:57,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:12:57,568 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:12:57,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:12:57,568 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:12:57,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804070138] [2022-11-03 04:12:57,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804070138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:12:57,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:12:57,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:12:57,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033184640] [2022-11-03 04:12:57,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:12:57,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:12:57,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:12:57,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:12:57,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:12:57,570 INFO L87 Difference]: Start difference. First operand 6000 states and 7826 transitions. Second operand has 6 states, 6 states have (on average 48.666666666666664) internal successors, (292), 6 states have internal predecessors, (292), 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) [2022-11-03 04:12:57,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:12:57,827 INFO L93 Difference]: Finished difference Result 14950 states and 19645 transitions. [2022-11-03 04:12:57,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 04:12:57,828 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 48.666666666666664) internal successors, (292), 6 states have internal predecessors, (292), 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 310 [2022-11-03 04:12:57,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:12:57,834 INFO L225 Difference]: With dead ends: 14950 [2022-11-03 04:12:57,834 INFO L226 Difference]: Without dead ends: 10176 [2022-11-03 04:12:57,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:12:57,838 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 1241 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:12:57,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 1423 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:12:57,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10176 states. [2022-11-03 04:12:58,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10176 to 6204. [2022-11-03 04:12:58,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6204 states, 6203 states have (on average 1.2980815734322102) internal successors, (8052), 6203 states have internal predecessors, (8052), 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) [2022-11-03 04:12:58,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6204 states to 6204 states and 8052 transitions. [2022-11-03 04:12:58,024 INFO L78 Accepts]: Start accepts. Automaton has 6204 states and 8052 transitions. Word has length 310 [2022-11-03 04:12:58,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:12:58,025 INFO L495 AbstractCegarLoop]: Abstraction has 6204 states and 8052 transitions. [2022-11-03 04:12:58,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.666666666666664) internal successors, (292), 6 states have internal predecessors, (292), 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) [2022-11-03 04:12:58,025 INFO L276 IsEmpty]: Start isEmpty. Operand 6204 states and 8052 transitions. [2022-11-03 04:12:58,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:12:58,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:12:58,033 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:12:58,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2022-11-03 04:12:58,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:12:58,247 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:12:58,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:12:58,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2014858967, now seen corresponding path program 1 times [2022-11-03 04:12:58,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:12:58,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186270150] [2022-11-03 04:12:58,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:12:58,249 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:12:58,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:12:58,249 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:12:58,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2022-11-03 04:12:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:12:59,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:12:59,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:12:59,087 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 04:12:59,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:12:59,088 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:12:59,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186270150] [2022-11-03 04:12:59,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186270150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:12:59,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:12:59,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:12:59,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381688806] [2022-11-03 04:12:59,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:12:59,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:12:59,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:12:59,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:12:59,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:12:59,089 INFO L87 Difference]: Start difference. First operand 6204 states and 8052 transitions. Second operand has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:12:59,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:12:59,348 INFO L93 Difference]: Finished difference Result 14478 states and 18951 transitions. [2022-11-03 04:12:59,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:12:59,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 310 [2022-11-03 04:12:59,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:12:59,355 INFO L225 Difference]: With dead ends: 14478 [2022-11-03 04:12:59,355 INFO L226 Difference]: Without dead ends: 10176 [2022-11-03 04:12:59,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:12:59,359 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 652 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:12:59,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1652 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:12:59,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10176 states. [2022-11-03 04:12:59,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10176 to 6204. [2022-11-03 04:12:59,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6204 states, 6203 states have (on average 1.2909882315008867) internal successors, (8008), 6203 states have internal predecessors, (8008), 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) [2022-11-03 04:12:59,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6204 states to 6204 states and 8008 transitions. [2022-11-03 04:12:59,489 INFO L78 Accepts]: Start accepts. Automaton has 6204 states and 8008 transitions. Word has length 310 [2022-11-03 04:12:59,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:12:59,489 INFO L495 AbstractCegarLoop]: Abstraction has 6204 states and 8008 transitions. [2022-11-03 04:12:59,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.2) internal successors, (216), 5 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 04:12:59,489 INFO L276 IsEmpty]: Start isEmpty. Operand 6204 states and 8008 transitions. [2022-11-03 04:12:59,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:12:59,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:12:59,494 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:12:59,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (78)] Ended with exit code 0 [2022-11-03 04:12:59,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:12:59,695 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:12:59,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:12:59,696 INFO L85 PathProgramCache]: Analyzing trace with hash 2014918549, now seen corresponding path program 1 times [2022-11-03 04:12:59,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:12:59,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574859578] [2022-11-03 04:12:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:12:59,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:12:59,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:12:59,699 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:12:59,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2022-11-03 04:13:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:00,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-03 04:13:00,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:05,568 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 04:13:05,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:13:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 04:13:11,975 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:13:11,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574859578] [2022-11-03 04:13:11,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574859578] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:13:11,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [76647054] [2022-11-03 04:13:11,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:11,976 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:13:11,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:13:11,977 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:13:11,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (80)] Waiting until timeout for monitored process [2022-11-03 04:13:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:13,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 70 conjunts are in the unsatisfiable core [2022-11-03 04:13:13,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:19,437 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-03 04:13:19,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:13:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 04:13:25,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [76647054] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:13:25,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958969130] [2022-11-03 04:13:25,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:13:25,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:13:25,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:13:25,005 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:13:25,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-11-03 04:13:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:13:25,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-03 04:13:25,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:13:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-03 04:13:30,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:13:35,232 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 105 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:13:35,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958969130] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:13:35,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:13:35,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 24, 20, 27, 30] total 75 [2022-11-03 04:13:35,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105848957] [2022-11-03 04:13:35,233 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:13:35,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-11-03 04:13:35,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:13:35,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-11-03 04:13:35,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=912, Invalid=4638, Unknown=0, NotChecked=0, Total=5550 [2022-11-03 04:13:35,234 INFO L87 Difference]: Start difference. First operand 6204 states and 8008 transitions. Second operand has 75 states, 75 states have (on average 9.146666666666667) internal successors, (686), 75 states have internal predecessors, (686), 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) [2022-11-03 04:14:06,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:06,611 INFO L93 Difference]: Finished difference Result 10952 states and 14261 transitions. [2022-11-03 04:14:06,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-11-03 04:14:06,612 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 9.146666666666667) internal successors, (686), 75 states have internal predecessors, (686), 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 310 [2022-11-03 04:14:06,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:06,617 INFO L225 Difference]: With dead ends: 10952 [2022-11-03 04:14:06,617 INFO L226 Difference]: Without dead ends: 10950 [2022-11-03 04:14:06,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2004 GetRequests, 1786 SyntacticMatches, 3 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12858 ImplicationChecksByTransitivity, 41.1s TimeCoverageRelationStatistics Valid=7746, Invalid=39126, Unknown=0, NotChecked=0, Total=46872 [2022-11-03 04:14:06,623 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 6543 mSDsluCounter, 21908 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6543 SdHoareTripleChecker+Valid, 22425 SdHoareTripleChecker+Invalid, 11753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10170 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:06,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6543 Valid, 22425 Invalid, 11753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1531 Invalid, 0 Unknown, 10170 Unchecked, 2.5s Time] [2022-11-03 04:14:06,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10950 states. [2022-11-03 04:14:06,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10950 to 6324. [2022-11-03 04:14:06,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6324 states, 6323 states have (on average 1.2921081764984976) internal successors, (8170), 6323 states have internal predecessors, (8170), 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) [2022-11-03 04:14:06,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6324 states to 6324 states and 8170 transitions. [2022-11-03 04:14:06,770 INFO L78 Accepts]: Start accepts. Automaton has 6324 states and 8170 transitions. Word has length 310 [2022-11-03 04:14:06,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:06,771 INFO L495 AbstractCegarLoop]: Abstraction has 6324 states and 8170 transitions. [2022-11-03 04:14:06,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 9.146666666666667) internal successors, (686), 75 states have internal predecessors, (686), 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) [2022-11-03 04:14:06,771 INFO L276 IsEmpty]: Start isEmpty. Operand 6324 states and 8170 transitions. [2022-11-03 04:14:06,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:14:06,777 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:06,778 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:14:06,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-11-03 04:14:06,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (79)] Ended with exit code 0 [2022-11-03 04:14:07,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (80)] Ended with exit code 0 [2022-11-03 04:14:07,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:14:07,379 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:07,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:07,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1205571923, now seen corresponding path program 1 times [2022-11-03 04:14:07,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:14:07,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183691668] [2022-11-03 04:14:07,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:07,381 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:14:07,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:14:07,382 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:14:07,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2022-11-03 04:14:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:08,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:14:08,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:08,814 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 04:14:08,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:14:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 04:14:08,858 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:14:08,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183691668] [2022-11-03 04:14:08,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183691668] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 04:14:08,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:14:08,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-03 04:14:08,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424499946] [2022-11-03 04:14:08,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:14:08,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:14:08,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:14:08,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:14:08,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:14:08,860 INFO L87 Difference]: Start difference. First operand 6324 states and 8170 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 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) [2022-11-03 04:14:09,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:09,103 INFO L93 Difference]: Finished difference Result 21226 states and 27732 transitions. [2022-11-03 04:14:09,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:14:09,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 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 310 [2022-11-03 04:14:09,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:09,112 INFO L225 Difference]: With dead ends: 21226 [2022-11-03 04:14:09,112 INFO L226 Difference]: Without dead ends: 16126 [2022-11-03 04:14:09,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 612 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-03 04:14:09,117 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1447 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:09,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1447 Valid, 1422 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:14:09,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16126 states. [2022-11-03 04:14:09,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16126 to 6720. [2022-11-03 04:14:09,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6720 states, 6719 states have (on average 1.2853103140348265) internal successors, (8636), 6719 states have internal predecessors, (8636), 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) [2022-11-03 04:14:09,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6720 states to 6720 states and 8636 transitions. [2022-11-03 04:14:09,259 INFO L78 Accepts]: Start accepts. Automaton has 6720 states and 8636 transitions. Word has length 310 [2022-11-03 04:14:09,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:09,259 INFO L495 AbstractCegarLoop]: Abstraction has 6720 states and 8636 transitions. [2022-11-03 04:14:09,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 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) [2022-11-03 04:14:09,259 INFO L276 IsEmpty]: Start isEmpty. Operand 6720 states and 8636 transitions. [2022-11-03 04:14:09,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:14:09,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:09,267 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:14:09,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (82)] Ended with exit code 0 [2022-11-03 04:14:09,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:14:09,468 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:09,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:09,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1326189799, now seen corresponding path program 1 times [2022-11-03 04:14:09,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:14:09,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637430046] [2022-11-03 04:14:09,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:09,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:14:09,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:14:09,470 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:14:09,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2022-11-03 04:14:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:10,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-03 04:14:10,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 04:14:12,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:14:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 04:14:20,908 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:14:20,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637430046] [2022-11-03 04:14:20,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637430046] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:14:20,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1250756550] [2022-11-03 04:14:20,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:20,909 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:14:20,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:14:20,911 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:14:20,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (84)] Waiting until timeout for monitored process [2022-11-03 04:14:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:22,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-03 04:14:22,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 04:14:25,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:14:32,068 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 04:14:32,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1250756550] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:14:32,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115509992] [2022-11-03 04:14:32,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:32,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:14:32,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:14:32,072 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:14:32,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-11-03 04:14:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:32,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-03 04:14:32,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:36,670 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 04:14:36,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:14:52,608 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 93 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:14:52,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115509992] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:14:52,609 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:14:52,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11, 9, 16, 19] total 45 [2022-11-03 04:14:52,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856252810] [2022-11-03 04:14:52,609 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:14:52,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-03 04:14:52,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:14:52,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-03 04:14:52,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=1532, Unknown=0, NotChecked=0, Total=1980 [2022-11-03 04:14:52,611 INFO L87 Difference]: Start difference. First operand 6720 states and 8636 transitions. Second operand has 45 states, 45 states have (on average 21.08888888888889) internal successors, (949), 45 states have internal predecessors, (949), 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) [2022-11-03 04:14:55,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:55,793 INFO L93 Difference]: Finished difference Result 11758 states and 15176 transitions. [2022-11-03 04:14:55,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-03 04:14:55,794 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 21.08888888888889) internal successors, (949), 45 states have internal predecessors, (949), 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 310 [2022-11-03 04:14:55,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:55,801 INFO L225 Difference]: With dead ends: 11758 [2022-11-03 04:14:55,801 INFO L226 Difference]: Without dead ends: 11756 [2022-11-03 04:14:55,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1890 GetRequests, 1812 SyntacticMatches, 3 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1320 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=1369, Invalid=4483, Unknown=0, NotChecked=0, Total=5852 [2022-11-03 04:14:55,805 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 2597 mSDsluCounter, 8103 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2597 SdHoareTripleChecker+Valid, 8424 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 810 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:55,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2597 Valid, 8424 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 521 Invalid, 0 Unknown, 810 Unchecked, 0.8s Time] [2022-11-03 04:14:55,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11756 states. [2022-11-03 04:14:55,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11756 to 10133. [2022-11-03 04:14:55,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10133 states, 10132 states have (on average 1.28997236478484) internal successors, (13070), 10132 states have internal predecessors, (13070), 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) [2022-11-03 04:14:56,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10133 states to 10133 states and 13070 transitions. [2022-11-03 04:14:56,007 INFO L78 Accepts]: Start accepts. Automaton has 10133 states and 13070 transitions. Word has length 310 [2022-11-03 04:14:56,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:56,007 INFO L495 AbstractCegarLoop]: Abstraction has 10133 states and 13070 transitions. [2022-11-03 04:14:56,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 21.08888888888889) internal successors, (949), 45 states have internal predecessors, (949), 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) [2022-11-03 04:14:56,008 INFO L276 IsEmpty]: Start isEmpty. Operand 10133 states and 13070 transitions. [2022-11-03 04:14:56,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:14:56,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:56,015 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:14:56,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-11-03 04:14:56,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (83)] Ended with exit code 0 [2022-11-03 04:14:56,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (84)] Ended with exit code 0 [2022-11-03 04:14:56,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:14:56,616 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:56,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:56,617 INFO L85 PathProgramCache]: Analyzing trace with hash 993850195, now seen corresponding path program 1 times [2022-11-03 04:14:56,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:14:56,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637699483] [2022-11-03 04:14:56,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:56,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:14:56,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:14:56,619 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:14:56,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2022-11-03 04:14:57,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:57,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 04:14:57,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:14:57,899 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 04:14:57,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:14:57,930 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 04:14:57,930 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:14:57,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637699483] [2022-11-03 04:14:57,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1637699483] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 04:14:57,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:14:57,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2022-11-03 04:14:57,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58125262] [2022-11-03 04:14:57,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:14:57,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:14:57,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:14:57,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:14:57,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:14:57,932 INFO L87 Difference]: Start difference. First operand 10133 states and 13070 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 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) [2022-11-03 04:14:58,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:14:58,244 INFO L93 Difference]: Finished difference Result 26211 states and 34202 transitions. [2022-11-03 04:14:58,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:14:58,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 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 310 [2022-11-03 04:14:58,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:14:58,254 INFO L225 Difference]: With dead ends: 26211 [2022-11-03 04:14:58,255 INFO L226 Difference]: Without dead ends: 17764 [2022-11-03 04:14:58,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 614 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:14:58,260 INFO L413 NwaCegarLoop]: 728 mSDtfsCounter, 871 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:14:58,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 1726 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:14:58,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17764 states. [2022-11-03 04:14:58,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17764 to 10133. [2022-11-03 04:14:58,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10133 states, 10132 states have (on average 1.2781287011448874) internal successors, (12950), 10132 states have internal predecessors, (12950), 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) [2022-11-03 04:14:58,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10133 states to 10133 states and 12950 transitions. [2022-11-03 04:14:58,488 INFO L78 Accepts]: Start accepts. Automaton has 10133 states and 12950 transitions. Word has length 310 [2022-11-03 04:14:58,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:14:58,488 INFO L495 AbstractCegarLoop]: Abstraction has 10133 states and 12950 transitions. [2022-11-03 04:14:58,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 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) [2022-11-03 04:14:58,489 INFO L276 IsEmpty]: Start isEmpty. Operand 10133 states and 12950 transitions. [2022-11-03 04:14:58,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:14:58,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:14:58,496 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:14:58,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (86)] Ended with exit code 0 [2022-11-03 04:14:58,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:14:58,697 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:14:58,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:14:58,697 INFO L85 PathProgramCache]: Analyzing trace with hash 184503569, now seen corresponding path program 1 times [2022-11-03 04:14:58,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:14:58,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476603939] [2022-11-03 04:14:58,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:14:58,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:14:58,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:14:58,700 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:14:58,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2022-11-03 04:14:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:14:59,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-03 04:14:59,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:15:01,956 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 04:15:01,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:15:10,823 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 04:15:10,823 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:15:10,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476603939] [2022-11-03 04:15:10,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476603939] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:15:10,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1257671853] [2022-11-03 04:15:10,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:15:10,824 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:15:10,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:15:10,825 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:15:10,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (88)] Waiting until timeout for monitored process [2022-11-03 04:15:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:15:12,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-03 04:15:12,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:15:14,939 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 04:15:14,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:15:22,235 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 04:15:22,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1257671853] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:15:22,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763744313] [2022-11-03 04:15:22,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:15:22,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:15:22,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:15:22,237 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:15:22,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-11-03 04:15:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:15:22,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-03 04:15:22,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:15:27,121 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-03 04:15:27,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:15:42,357 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 91 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:15:42,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763744313] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:15:42,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:15:42,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 13, 11, 18, 21] total 53 [2022-11-03 04:15:42,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408641497] [2022-11-03 04:15:42,358 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:15:42,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-11-03 04:15:42,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:15:42,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-11-03 04:15:42,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=554, Invalid=2202, Unknown=0, NotChecked=0, Total=2756 [2022-11-03 04:15:42,360 INFO L87 Difference]: Start difference. First operand 10133 states and 12950 transitions. Second operand has 53 states, 53 states have (on average 18.0188679245283) internal successors, (955), 53 states have internal predecessors, (955), 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) [2022-11-03 04:15:49,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:15:49,235 INFO L93 Difference]: Finished difference Result 11627 states and 14953 transitions. [2022-11-03 04:15:49,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-03 04:15:49,236 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 18.0188679245283) internal successors, (955), 53 states have internal predecessors, (955), 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 310 [2022-11-03 04:15:49,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:15:49,242 INFO L225 Difference]: With dead ends: 11627 [2022-11-03 04:15:49,242 INFO L226 Difference]: Without dead ends: 11625 [2022-11-03 04:15:49,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1903 GetRequests, 1801 SyntacticMatches, 3 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2275 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=2550, Invalid=7550, Unknown=0, NotChecked=0, Total=10100 [2022-11-03 04:15:49,246 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 2384 mSDsluCounter, 9214 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2384 SdHoareTripleChecker+Valid, 9534 SdHoareTripleChecker+Invalid, 2645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1704 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:15:49,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2384 Valid, 9534 Invalid, 2645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 934 Invalid, 0 Unknown, 1704 Unchecked, 1.5s Time] [2022-11-03 04:15:49,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11625 states. [2022-11-03 04:15:49,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11625 to 10133. [2022-11-03 04:15:49,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10133 states, 10132 states have (on average 1.2781287011448874) internal successors, (12950), 10132 states have internal predecessors, (12950), 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) [2022-11-03 04:15:49,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10133 states to 10133 states and 12950 transitions. [2022-11-03 04:15:49,507 INFO L78 Accepts]: Start accepts. Automaton has 10133 states and 12950 transitions. Word has length 310 [2022-11-03 04:15:49,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:15:49,508 INFO L495 AbstractCegarLoop]: Abstraction has 10133 states and 12950 transitions. [2022-11-03 04:15:49,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 18.0188679245283) internal successors, (955), 53 states have internal predecessors, (955), 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) [2022-11-03 04:15:49,508 INFO L276 IsEmpty]: Start isEmpty. Operand 10133 states and 12950 transitions. [2022-11-03 04:15:49,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:15:49,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:15:49,519 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:15:49,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (88)] Forceful destruction successful, exit code 0 [2022-11-03 04:15:49,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2022-11-03 04:15:49,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-11-03 04:15:50,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:15:50,125 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:15:50,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:15:50,126 INFO L85 PathProgramCache]: Analyzing trace with hash -366164155, now seen corresponding path program 1 times [2022-11-03 04:15:50,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:15:50,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302774835] [2022-11-03 04:15:50,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:15:50,128 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:15:50,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:15:50,128 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:15:50,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2022-11-03 04:15:50,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:15:50,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:15:50,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:15:52,517 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 82 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:15:52,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:15:54,827 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 82 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:15:54,827 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:15:54,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302774835] [2022-11-03 04:15:54,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302774835] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:15:54,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [531944015] [2022-11-03 04:15:54,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:15:54,827 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:15:54,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:15:54,828 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:15:54,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (91)] Waiting until timeout for monitored process [2022-11-03 04:15:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:15:56,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 04:15:56,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:15:57,538 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:15:57,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:15:58,137 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:15:58,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [531944015] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:15:58,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129512153] [2022-11-03 04:15:58,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:15:58,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:15:58,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:15:58,138 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:15:58,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-11-03 04:15:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:15:58,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:15:58,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:15:59,919 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 80 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:15:59,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:16:01,247 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 80 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 04:16:01,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129512153] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:16:01,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:16:01,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 7, 7] total 29 [2022-11-03 04:16:01,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399419533] [2022-11-03 04:16:01,248 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:16:01,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-03 04:16:01,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:16:01,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-03 04:16:01,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=740, Unknown=0, NotChecked=0, Total=812 [2022-11-03 04:16:01,251 INFO L87 Difference]: Start difference. First operand 10133 states and 12950 transitions. Second operand has 29 states, 29 states have (on average 46.62068965517241) internal successors, (1352), 29 states have internal predecessors, (1352), 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) [2022-11-03 04:16:40,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:16:40,357 INFO L93 Difference]: Finished difference Result 60897 states and 79835 transitions. [2022-11-03 04:16:40,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 169 states. [2022-11-03 04:16:40,359 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 46.62068965517241) internal successors, (1352), 29 states have internal predecessors, (1352), 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 310 [2022-11-03 04:16:40,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:16:40,389 INFO L225 Difference]: With dead ends: 60897 [2022-11-03 04:16:40,389 INFO L226 Difference]: Without dead ends: 58042 [2022-11-03 04:16:40,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2021 GetRequests, 1827 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14417 ImplicationChecksByTransitivity, 33.1s TimeCoverageRelationStatistics Valid=7397, Invalid=30823, Unknown=0, NotChecked=0, Total=38220 [2022-11-03 04:16:40,398 INFO L413 NwaCegarLoop]: 1125 mSDtfsCounter, 21891 mSDsluCounter, 13498 mSDsCounter, 0 mSdLazyCounter, 2939 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21891 SdHoareTripleChecker+Valid, 14623 SdHoareTripleChecker+Invalid, 3109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 2939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:16:40,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21891 Valid, 14623 Invalid, 3109 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [170 Valid, 2939 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-03 04:16:40,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58042 states. [2022-11-03 04:16:40,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58042 to 11260. [2022-11-03 04:16:40,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11260 states, 11259 states have (on average 1.2830624389377387) internal successors, (14446), 11259 states have internal predecessors, (14446), 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) [2022-11-03 04:16:40,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11260 states to 11260 states and 14446 transitions. [2022-11-03 04:16:40,818 INFO L78 Accepts]: Start accepts. Automaton has 11260 states and 14446 transitions. Word has length 310 [2022-11-03 04:16:40,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:16:40,819 INFO L495 AbstractCegarLoop]: Abstraction has 11260 states and 14446 transitions. [2022-11-03 04:16:40,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 46.62068965517241) internal successors, (1352), 29 states have internal predecessors, (1352), 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) [2022-11-03 04:16:40,819 INFO L276 IsEmpty]: Start isEmpty. Operand 11260 states and 14446 transitions. [2022-11-03 04:16:40,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:16:40,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:16:40,829 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:16:40,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2022-11-03 04:16:41,051 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (91)] Ended with exit code 0 [2022-11-03 04:16:41,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-11-03 04:16:41,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:16:41,443 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:16:41,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:16:41,443 INFO L85 PathProgramCache]: Analyzing trace with hash 116276063, now seen corresponding path program 1 times [2022-11-03 04:16:41,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:16:41,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632068296] [2022-11-03 04:16:41,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:16:41,445 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:16:41,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:16:41,446 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:16:41,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2022-11-03 04:16:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:16:42,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:16:42,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:16:43,669 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 100 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:16:43,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:16:45,506 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 100 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:16:45,506 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:16:45,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632068296] [2022-11-03 04:16:45,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632068296] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:16:45,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1518055288] [2022-11-03 04:16:45,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:16:45,507 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:16:45,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:16:45,508 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:16:45,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (94)] Waiting until timeout for monitored process [2022-11-03 04:16:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:16:47,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 04:16:47,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:16:48,482 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 90 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:16:48,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:16:49,428 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 90 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:16:49,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1518055288] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:16:49,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545301058] [2022-11-03 04:16:49,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:16:49,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:16:49,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:16:49,430 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:16:49,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-11-03 04:16:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:16:50,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 04:16:50,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:16:51,030 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 90 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:16:51,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:16:51,525 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 90 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:16:51,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545301058] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:16:51,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:16:51,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 12, 12, 12, 12] total 32 [2022-11-03 04:16:51,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524994321] [2022-11-03 04:16:51,526 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:16:51,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-03 04:16:51,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:16:51,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-03 04:16:51,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=912, Unknown=0, NotChecked=0, Total=992 [2022-11-03 04:16:51,527 INFO L87 Difference]: Start difference. First operand 11260 states and 14446 transitions. Second operand has 32 states, 32 states have (on average 29.75) internal successors, (952), 32 states have internal predecessors, (952), 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) [2022-11-03 04:17:07,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:17:07,868 INFO L93 Difference]: Finished difference Result 89008 states and 114902 transitions. [2022-11-03 04:17:07,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-11-03 04:17:07,869 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 29.75) internal successors, (952), 32 states have internal predecessors, (952), 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 310 [2022-11-03 04:17:07,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:17:07,914 INFO L225 Difference]: With dead ends: 89008 [2022-11-03 04:17:07,914 INFO L226 Difference]: Without dead ends: 82126 [2022-11-03 04:17:07,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1945 GetRequests, 1824 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3789 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=3084, Invalid=11922, Unknown=0, NotChecked=0, Total=15006 [2022-11-03 04:17:07,929 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 12192 mSDsluCounter, 14237 mSDsCounter, 0 mSdLazyCounter, 2424 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12192 SdHoareTripleChecker+Valid, 15858 SdHoareTripleChecker+Invalid, 2492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:17:07,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12192 Valid, 15858 Invalid, 2492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2424 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-03 04:17:07,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82126 states. [2022-11-03 04:17:08,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82126 to 11416. [2022-11-03 04:17:08,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11416 states, 11415 states have (on average 1.2837494524748139) internal successors, (14654), 11415 states have internal predecessors, (14654), 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) [2022-11-03 04:17:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11416 states to 11416 states and 14654 transitions. [2022-11-03 04:17:08,549 INFO L78 Accepts]: Start accepts. Automaton has 11416 states and 14654 transitions. Word has length 310 [2022-11-03 04:17:08,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:17:08,549 INFO L495 AbstractCegarLoop]: Abstraction has 11416 states and 14654 transitions. [2022-11-03 04:17:08,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 29.75) internal successors, (952), 32 states have internal predecessors, (952), 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) [2022-11-03 04:17:08,549 INFO L276 IsEmpty]: Start isEmpty. Operand 11416 states and 14654 transitions. [2022-11-03 04:17:08,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:17:08,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:17:08,563 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:17:08,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-11-03 04:17:08,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (94)] Ended with exit code 0 [2022-11-03 04:17:09,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (93)] Ended with exit code 0 [2022-11-03 04:17:09,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:17:09,191 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:17:09,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:17:09,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1750432611, now seen corresponding path program 1 times [2022-11-03 04:17:09,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:17:09,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2036385660] [2022-11-03 04:17:09,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:17:09,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:17:09,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:17:09,194 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:17:09,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2022-11-03 04:17:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:17:10,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:17:10,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:17:10,857 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 98 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:17:10,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:17:12,062 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 98 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:17:12,062 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:17:12,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2036385660] [2022-11-03 04:17:12,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2036385660] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:17:12,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1305570819] [2022-11-03 04:17:12,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:17:12,063 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:17:12,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:17:12,064 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:17:12,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (97)] Waiting until timeout for monitored process [2022-11-03 04:17:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:17:14,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-03 04:17:14,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:17:16,317 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 04:17:16,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:17:25,605 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 04:17:25,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1305570819] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:17:25,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188055295] [2022-11-03 04:17:25,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:17:25,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:17:25,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:17:25,606 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:17:25,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-11-03 04:17:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:17:26,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 04:17:26,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:17:27,118 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 98 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:17:27,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:17:28,330 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 98 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 04:17:28,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188055295] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:17:28,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:17:28,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 11, 9, 7, 7] total 27 [2022-11-03 04:17:28,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326036518] [2022-11-03 04:17:28,332 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:17:28,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-03 04:17:28,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:17:28,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-03 04:17:28,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-11-03 04:17:28,334 INFO L87 Difference]: Start difference. First operand 11416 states and 14654 transitions. Second operand has 27 states, 27 states have (on average 35.888888888888886) internal successors, (969), 27 states have internal predecessors, (969), 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) [2022-11-03 04:17:38,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:17:38,723 INFO L93 Difference]: Finished difference Result 66466 states and 86609 transitions. [2022-11-03 04:17:38,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-11-03 04:17:38,724 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 35.888888888888886) internal successors, (969), 27 states have internal predecessors, (969), 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 310 [2022-11-03 04:17:38,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:17:38,763 INFO L225 Difference]: With dead ends: 66466 [2022-11-03 04:17:38,763 INFO L226 Difference]: Without dead ends: 59442 [2022-11-03 04:17:38,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1926 GetRequests, 1828 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2236 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=2400, Invalid=7302, Unknown=0, NotChecked=0, Total=9702 [2022-11-03 04:17:38,775 INFO L413 NwaCegarLoop]: 1772 mSDtfsCounter, 6644 mSDsluCounter, 15095 mSDsCounter, 0 mSdLazyCounter, 2269 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6644 SdHoareTripleChecker+Valid, 16867 SdHoareTripleChecker+Invalid, 3304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1012 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:17:38,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6644 Valid, 16867 Invalid, 3304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2269 Invalid, 0 Unknown, 1012 Unchecked, 3.3s Time] [2022-11-03 04:17:38,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59442 states. [2022-11-03 04:17:39,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59442 to 7656. [2022-11-03 04:17:39,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7656 states, 7655 states have (on average 1.2781188765512737) internal successors, (9784), 7655 states have internal predecessors, (9784), 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) [2022-11-03 04:17:39,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7656 states to 7656 states and 9784 transitions. [2022-11-03 04:17:39,174 INFO L78 Accepts]: Start accepts. Automaton has 7656 states and 9784 transitions. Word has length 310 [2022-11-03 04:17:39,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:17:39,174 INFO L495 AbstractCegarLoop]: Abstraction has 7656 states and 9784 transitions. [2022-11-03 04:17:39,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 35.888888888888886) internal successors, (969), 27 states have internal predecessors, (969), 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) [2022-11-03 04:17:39,175 INFO L276 IsEmpty]: Start isEmpty. Operand 7656 states and 9784 transitions. [2022-11-03 04:17:39,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:17:39,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:17:39,181 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:17:39,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (97)] Ended with exit code 0 [2022-11-03 04:17:39,409 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-11-03 04:17:39,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (96)] Ended with exit code 0 [2022-11-03 04:17:39,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:17:39,781 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:17:39,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:17:39,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1423328221, now seen corresponding path program 1 times [2022-11-03 04:17:39,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:17:39,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206818143] [2022-11-03 04:17:39,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:17:39,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:17:39,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:17:39,785 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:17:39,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2022-11-03 04:17:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:17:40,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 04:17:40,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:17:41,140 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:17:41,140 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:17:41,140 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:17:41,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206818143] [2022-11-03 04:17:41,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206818143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:17:41,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:17:41,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 04:17:41,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552683088] [2022-11-03 04:17:41,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:17:41,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:17:41,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:17:41,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:17:41,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 04:17:41,142 INFO L87 Difference]: Start difference. First operand 7656 states and 9784 transitions. Second operand has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 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) [2022-11-03 04:17:41,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:17:41,640 INFO L93 Difference]: Finished difference Result 14650 states and 18780 transitions. [2022-11-03 04:17:41,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:17:41,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 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 310 [2022-11-03 04:17:41,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:17:41,647 INFO L225 Difference]: With dead ends: 14650 [2022-11-03 04:17:41,647 INFO L226 Difference]: Without dead ends: 9588 [2022-11-03 04:17:41,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:17:41,652 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 727 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:17:41,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1324 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:17:41,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9588 states. [2022-11-03 04:17:41,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9588 to 7164. [2022-11-03 04:17:41,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7164 states, 7163 states have (on average 1.2701382102471033) internal successors, (9098), 7163 states have internal predecessors, (9098), 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) [2022-11-03 04:17:41,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7164 states to 7164 states and 9098 transitions. [2022-11-03 04:17:41,810 INFO L78 Accepts]: Start accepts. Automaton has 7164 states and 9098 transitions. Word has length 310 [2022-11-03 04:17:41,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:17:41,810 INFO L495 AbstractCegarLoop]: Abstraction has 7164 states and 9098 transitions. [2022-11-03 04:17:41,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.0) internal successors, (310), 5 states have internal predecessors, (310), 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) [2022-11-03 04:17:41,811 INFO L276 IsEmpty]: Start isEmpty. Operand 7164 states and 9098 transitions. [2022-11-03 04:17:41,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:17:41,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:17:41,814 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:17:41,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (99)] Ended with exit code 0 [2022-11-03 04:17:42,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:17:42,015 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:17:42,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:17:42,015 INFO L85 PathProgramCache]: Analyzing trace with hash -2129835505, now seen corresponding path program 1 times [2022-11-03 04:17:42,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:17:42,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552802298] [2022-11-03 04:17:42,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:17:42,017 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:17:42,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:17:42,018 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:17:42,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2022-11-03 04:17:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:17:42,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 136 conjunts are in the unsatisfiable core [2022-11-03 04:17:42,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:17:58,533 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:17:58,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:17:58,533 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:17:58,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552802298] [2022-11-03 04:17:58,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552802298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:17:58,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:17:58,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-11-03 04:17:58,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087228009] [2022-11-03 04:17:58,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:17:58,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-03 04:17:58,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:17:58,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-03 04:17:58,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2022-11-03 04:17:58,535 INFO L87 Difference]: Start difference. First operand 7164 states and 9098 transitions. Second operand has 25 states, 25 states have (on average 12.4) internal successors, (310), 25 states have internal predecessors, (310), 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) [2022-11-03 04:18:05,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:18:05,002 INFO L93 Difference]: Finished difference Result 20396 states and 26303 transitions. [2022-11-03 04:18:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 04:18:05,004 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 12.4) internal successors, (310), 25 states have internal predecessors, (310), 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 310 [2022-11-03 04:18:05,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:18:05,013 INFO L225 Difference]: With dead ends: 20396 [2022-11-03 04:18:05,013 INFO L226 Difference]: Without dead ends: 15424 [2022-11-03 04:18:05,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 225 SyntacticMatches, 61 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=272, Invalid=1798, Unknown=0, NotChecked=0, Total=2070 [2022-11-03 04:18:05,023 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 4146 mSDsluCounter, 12619 mSDsCounter, 0 mSdLazyCounter, 1087 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4146 SdHoareTripleChecker+Valid, 13235 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 339 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:18:05,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4146 Valid, 13235 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1087 Invalid, 0 Unknown, 339 Unchecked, 2.2s Time] [2022-11-03 04:18:05,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15424 states. [2022-11-03 04:18:05,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15424 to 7690. [2022-11-03 04:18:05,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7690 states, 7689 states have (on average 1.264403693588243) internal successors, (9722), 7689 states have internal predecessors, (9722), 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) [2022-11-03 04:18:05,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7690 states to 7690 states and 9722 transitions. [2022-11-03 04:18:05,209 INFO L78 Accepts]: Start accepts. Automaton has 7690 states and 9722 transitions. Word has length 310 [2022-11-03 04:18:05,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:18:05,209 INFO L495 AbstractCegarLoop]: Abstraction has 7690 states and 9722 transitions. [2022-11-03 04:18:05,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 12.4) internal successors, (310), 25 states have internal predecessors, (310), 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) [2022-11-03 04:18:05,209 INFO L276 IsEmpty]: Start isEmpty. Operand 7690 states and 9722 transitions. [2022-11-03 04:18:05,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:18:05,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:18:05,213 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:18:05,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (100)] Ended with exit code 0 [2022-11-03 04:18:05,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:18:05,415 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:18:05,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:18:05,415 INFO L85 PathProgramCache]: Analyzing trace with hash -2137834479, now seen corresponding path program 1 times [2022-11-03 04:18:05,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:18:05,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794892719] [2022-11-03 04:18:05,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:18:05,417 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:18:05,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:18:05,418 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:18:05,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2022-11-03 04:18:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:18:06,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-03 04:18:06,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:18:10,397 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:18:10,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:18:10,398 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:18:10,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794892719] [2022-11-03 04:18:10,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794892719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:18:10,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:18:10,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-03 04:18:10,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117068363] [2022-11-03 04:18:10,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:18:10,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 04:18:10,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:18:10,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 04:18:10,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2022-11-03 04:18:10,400 INFO L87 Difference]: Start difference. First operand 7690 states and 9722 transitions. Second operand has 20 states, 20 states have (on average 15.5) internal successors, (310), 20 states have internal predecessors, (310), 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) [2022-11-03 04:18:11,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:18:11,197 INFO L93 Difference]: Finished difference Result 12550 states and 16040 transitions. [2022-11-03 04:18:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 04:18:11,198 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 15.5) internal successors, (310), 20 states have internal predecessors, (310), 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 310 [2022-11-03 04:18:11,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:18:11,205 INFO L225 Difference]: With dead ends: 12550 [2022-11-03 04:18:11,205 INFO L226 Difference]: Without dead ends: 10108 [2022-11-03 04:18:11,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2022-11-03 04:18:11,208 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 602 mSDsluCounter, 9458 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 10092 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 663 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:18:11,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 10092 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 193 Invalid, 0 Unknown, 663 Unchecked, 0.5s Time] [2022-11-03 04:18:11,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10108 states. [2022-11-03 04:18:11,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10108 to 7708. [2022-11-03 04:18:11,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7708 states, 7707 states have (on average 1.2649539379784611) internal successors, (9749), 7707 states have internal predecessors, (9749), 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) [2022-11-03 04:18:11,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7708 states to 7708 states and 9749 transitions. [2022-11-03 04:18:11,382 INFO L78 Accepts]: Start accepts. Automaton has 7708 states and 9749 transitions. Word has length 310 [2022-11-03 04:18:11,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:18:11,382 INFO L495 AbstractCegarLoop]: Abstraction has 7708 states and 9749 transitions. [2022-11-03 04:18:11,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 15.5) internal successors, (310), 20 states have internal predecessors, (310), 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) [2022-11-03 04:18:11,383 INFO L276 IsEmpty]: Start isEmpty. Operand 7708 states and 9749 transitions. [2022-11-03 04:18:11,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:18:11,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:18:11,388 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:18:11,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (101)] Ended with exit code 0 [2022-11-03 04:18:11,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:18:11,589 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:18:11,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:18:11,589 INFO L85 PathProgramCache]: Analyzing trace with hash -980302189, now seen corresponding path program 1 times [2022-11-03 04:18:11,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:18:11,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559418582] [2022-11-03 04:18:11,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:18:11,591 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:18:11,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:18:11,592 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:18:11,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2022-11-03 04:18:12,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:18:12,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-03 04:18:12,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:18:16,461 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 04:18:16,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:18:16,461 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:18:16,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559418582] [2022-11-03 04:18:16,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559418582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:18:16,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:18:16,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-03 04:18:16,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819481122] [2022-11-03 04:18:16,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:18:16,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 04:18:16,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:18:16,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 04:18:16,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2022-11-03 04:18:16,463 INFO L87 Difference]: Start difference. First operand 7708 states and 9749 transitions. Second operand has 21 states, 21 states have (on average 14.761904761904763) internal successors, (310), 21 states have internal predecessors, (310), 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) [2022-11-03 04:18:19,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:18:19,083 INFO L93 Difference]: Finished difference Result 18816 states and 24159 transitions. [2022-11-03 04:18:19,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-03 04:18:19,085 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 14.761904761904763) internal successors, (310), 21 states have internal predecessors, (310), 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 310 [2022-11-03 04:18:19,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:18:19,094 INFO L225 Difference]: With dead ends: 18816 [2022-11-03 04:18:19,094 INFO L226 Difference]: Without dead ends: 13850 [2022-11-03 04:18:19,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 285 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=179, Invalid=1081, Unknown=0, NotChecked=0, Total=1260 [2022-11-03 04:18:19,099 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 3860 mSDsluCounter, 10189 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3860 SdHoareTripleChecker+Valid, 10819 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 251 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:18:19,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3860 Valid, 10819 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 782 Invalid, 0 Unknown, 251 Unchecked, 1.4s Time] [2022-11-03 04:18:19,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13850 states. [2022-11-03 04:18:19,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13850 to 7990. [2022-11-03 04:18:19,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7990 states, 7989 states have (on average 1.2604831643509826) internal successors, (10070), 7989 states have internal predecessors, (10070), 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) [2022-11-03 04:18:19,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7990 states to 7990 states and 10070 transitions. [2022-11-03 04:18:19,323 INFO L78 Accepts]: Start accepts. Automaton has 7990 states and 10070 transitions. Word has length 310 [2022-11-03 04:18:19,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:18:19,323 INFO L495 AbstractCegarLoop]: Abstraction has 7990 states and 10070 transitions. [2022-11-03 04:18:19,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 14.761904761904763) internal successors, (310), 21 states have internal predecessors, (310), 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) [2022-11-03 04:18:19,324 INFO L276 IsEmpty]: Start isEmpty. Operand 7990 states and 10070 transitions. [2022-11-03 04:18:19,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-03 04:18:19,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:18:19,329 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:18:19,351 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (102)] Ended with exit code 0 [2022-11-03 04:18:19,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:18:19,533 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:18:19,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:18:19,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1521607957, now seen corresponding path program 1 times [2022-11-03 04:18:19,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:18:19,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422122254] [2022-11-03 04:18:19,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:18:19,536 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:18:19,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:18:19,537 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:18:19,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc63fcb2-f25d-4efa-b182-16ad049745b4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2022-11-03 04:18:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:18:20,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 2279 conjuncts, 163 conjunts are in the unsatisfiable core [2022-11-03 04:18:20,441 INFO L286 TraceCheckSpWp]: Computing forward predicates...