./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal21.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/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_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal21.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/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_b19de2a3-c333-4338-bf75-8af5c2bfcede/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 c04374ca4e7d3fdccf4ada1f22a04670bb7779c5a6ce431d27b2f71f31be3bbf --- 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 03:50:01,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:50:01,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:50:01,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:50:01,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:50:01,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:50:01,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:50:01,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:50:01,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:50:01,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:50:01,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:50:01,881 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:50:01,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:50:01,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:50:01,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:50:01,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:50:01,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:50:01,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:50:01,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:50:01,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:50:01,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:50:01,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:50:01,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:50:01,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:50:01,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:50:01,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:50:01,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:50:01,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:50:01,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:50:01,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:50:01,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:50:01,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:50:01,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:50:01,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:50:01,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:50:01,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:50:01,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:50:01,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:50:01,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:50:01,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:50:01,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:50:01,947 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:50:01,975 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:50:01,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:50:01,976 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:50:01,977 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:50:01,977 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:50:01,978 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:50:01,978 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:50:01,978 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:50:01,979 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:50:01,979 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:50:01,979 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:50:01,979 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:50:01,980 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:50:01,980 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:50:01,980 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:50:01,980 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:50:01,981 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:50:01,981 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:50:01,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:50:01,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:50:01,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:50:01,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:50:01,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:50:01,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:50:01,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:50:01,984 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:50:01,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:50:01,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:50:01,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:50:01,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:50:01,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:50:01,986 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:50:01,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:50:01,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:50:01,986 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:50:01,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:50:01,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:50:01,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:50:01,988 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_b19de2a3-c333-4338-bf75-8af5c2bfcede/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c04374ca4e7d3fdccf4ada1f22a04670bb7779c5a6ce431d27b2f71f31be3bbf [2022-11-03 03:50:02,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:50:02,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:50:02,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:50:02,355 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:50:02,357 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:50:02,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal21.c [2022-11-03 03:50:02,455 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/data/e9212a4be/8c8cded124c34e5b93c4c906348c162d/FLAG7bd77a8ad [2022-11-03 03:50:03,205 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:50:03,205 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal21.c [2022-11-03 03:50:03,220 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/data/e9212a4be/8c8cded124c34e5b93c4c906348c162d/FLAG7bd77a8ad [2022-11-03 03:50:03,444 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/data/e9212a4be/8c8cded124c34e5b93c4c906348c162d [2022-11-03 03:50:03,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:50:03,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:50:03,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:50:03,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:50:03,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:50:03,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:50:03" (1/1) ... [2022-11-03 03:50:03,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2734d99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:03, skipping insertion in model container [2022-11-03 03:50:03,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:50:03" (1/1) ... [2022-11-03 03:50:03,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:50:03,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:50:03,825 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_b19de2a3-c333-4338-bf75-8af5c2bfcede/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal21.c[1107,1120] [2022-11-03 03:50:04,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:50:04,264 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:50:04,293 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_b19de2a3-c333-4338-bf75-8af5c2bfcede/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal21.c[1107,1120] [2022-11-03 03:50:04,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:50:04,543 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:50:04,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:04 WrapperNode [2022-11-03 03:50:04,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:50:04,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:50:04,547 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:50:04,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:50:04,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:04" (1/1) ... [2022-11-03 03:50:04,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:04" (1/1) ... [2022-11-03 03:50:04,881 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1946 [2022-11-03 03:50:04,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:50:04,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:50:04,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:50:04,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:50:04,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:04" (1/1) ... [2022-11-03 03:50:04,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:04" (1/1) ... [2022-11-03 03:50:04,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:04" (1/1) ... [2022-11-03 03:50:04,934 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:04" (1/1) ... [2022-11-03 03:50:05,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:04" (1/1) ... [2022-11-03 03:50:05,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:04" (1/1) ... [2022-11-03 03:50:05,122 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:04" (1/1) ... [2022-11-03 03:50:05,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:04" (1/1) ... [2022-11-03 03:50:05,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:50:05,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:50:05,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:50:05,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:50:05,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:04" (1/1) ... [2022-11-03 03:50:05,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:50:05,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:50:05,215 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:50:05,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:50:05,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:50:05,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:50:05,786 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:50:05,789 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:50:13,094 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:50:24,335 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:50:24,336 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:50:24,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:50:24 BoogieIcfgContainer [2022-11-03 03:50:24,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:50:24,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:50:24,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:50:24,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:50:24,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:50:03" (1/3) ... [2022-11-03 03:50:24,347 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675968cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:50:24, skipping insertion in model container [2022-11-03 03:50:24,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:50:04" (2/3) ... [2022-11-03 03:50:24,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675968cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:50:24, skipping insertion in model container [2022-11-03 03:50:24,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:50:24" (3/3) ... [2022-11-03 03:50:24,349 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal21.c [2022-11-03 03:50:24,373 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:50:24,373 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:50:24,447 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:50:24,455 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;@2bb7f48d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:50:24,455 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:50:24,460 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 03:50:24,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 03:50:24,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:50:24,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 03:50:24,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:50:24,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:50:24,475 INFO L85 PathProgramCache]: Analyzing trace with hash 26075824, now seen corresponding path program 1 times [2022-11-03 03:50:24,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:50:24,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087582914] [2022-11-03 03:50:24,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:50:24,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:51:49,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:51:49,500 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 03:52:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:52:51,497 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 03:52:51,499 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 03:52:51,501 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 03:52:51,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:52:51,508 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 03:52:51,512 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:52:51,593 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 03:52:51,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:52:51 BoogieIcfgContainer [2022-11-03 03:52:51,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:52:51,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:52:51,700 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:52:51,700 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:52:51,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:50:24" (3/4) ... [2022-11-03 03:52:51,704 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 03:52:51,705 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:52:51,706 INFO L158 Benchmark]: Toolchain (without parser) took 168256.59ms. Allocated memory was 104.9MB in the beginning and 4.8GB in the end (delta: 4.7GB). Free memory was 69.5MB in the beginning and 4.7GB in the end (delta: -4.6GB). Peak memory consumption was 118.0MB. Max. memory is 16.1GB. [2022-11-03 03:52:51,707 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 104.9MB. Free memory was 58.4MB in the beginning and 58.4MB in the end (delta: 41.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:52:51,708 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1094.19ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 69.4MB in the beginning and 99.2MB in the end (delta: -29.9MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2022-11-03 03:52:51,708 INFO L158 Benchmark]: Boogie Procedure Inliner took 335.71ms. Allocated memory is still 134.2MB. Free memory was 99.2MB in the beginning and 69.8MB in the end (delta: 29.4MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. [2022-11-03 03:52:51,709 INFO L158 Benchmark]: Boogie Preprocessor took 295.57ms. Allocated memory is still 134.2MB. Free memory was 69.8MB in the beginning and 77.8MB in the end (delta: -8.0MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2022-11-03 03:52:51,710 INFO L158 Benchmark]: RCFGBuilder took 19158.46ms. Allocated memory was 134.2MB in the beginning and 2.4GB in the end (delta: 2.3GB). Free memory was 77.8MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 801.1MB. Max. memory is 16.1GB. [2022-11-03 03:52:51,711 INFO L158 Benchmark]: TraceAbstraction took 147358.57ms. Allocated memory was 2.4GB in the beginning and 4.8GB in the end (delta: 2.4GB). Free memory was 1.9GB in the beginning and 4.7GB in the end (delta: -2.8GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. [2022-11-03 03:52:51,712 INFO L158 Benchmark]: Witness Printer took 4.73ms. Allocated memory is still 4.8GB. Free memory is still 4.7GB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:52:51,716 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 104.9MB. Free memory was 58.4MB in the beginning and 58.4MB in the end (delta: 41.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1094.19ms. Allocated memory was 104.9MB in the beginning and 134.2MB in the end (delta: 29.4MB). Free memory was 69.4MB in the beginning and 99.2MB in the end (delta: -29.9MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 335.71ms. Allocated memory is still 134.2MB. Free memory was 99.2MB in the beginning and 69.8MB in the end (delta: 29.4MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. * Boogie Preprocessor took 295.57ms. Allocated memory is still 134.2MB. Free memory was 69.8MB in the beginning and 77.8MB in the end (delta: -8.0MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. * RCFGBuilder took 19158.46ms. Allocated memory was 134.2MB in the beginning and 2.4GB in the end (delta: 2.3GB). Free memory was 77.8MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 801.1MB. Max. memory is 16.1GB. * TraceAbstraction took 147358.57ms. Allocated memory was 2.4GB in the beginning and 4.8GB in the end (delta: 2.4GB). Free memory was 1.9GB in the beginning and 4.7GB in the end (delta: -2.8GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. * Witness Printer took 4.73ms. Allocated memory is still 4.8GB. Free memory is still 4.7GB. 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 198, overapproximation of bitwiseAnd at line 160, overapproximation of bitwiseComplement at line 192, overapproximation of bitwiseXOr at line 201. 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_106 mask_SORT_106 = (SORT_106)-1 >> (sizeof(SORT_106) * 8 - 4); [L41] const SORT_106 msb_SORT_106 = (SORT_106)1 << (4 - 1); [L43] const SORT_146 mask_SORT_146 = (SORT_146)-1 >> (sizeof(SORT_146) * 8 - 6); [L44] const SORT_146 msb_SORT_146 = (SORT_146)1 << (6 - 1); [L46] const SORT_148 mask_SORT_148 = (SORT_148)-1 >> (sizeof(SORT_148) * 8 - 7); [L47] const SORT_148 msb_SORT_148 = (SORT_148)1 << (7 - 1); [L49] const SORT_151 mask_SORT_151 = (SORT_151)-1 >> (sizeof(SORT_151) * 8 - 9); [L50] const SORT_151 msb_SORT_151 = (SORT_151)1 << (9 - 1); [L52] const SORT_153 mask_SORT_153 = (SORT_153)-1 >> (sizeof(SORT_153) * 8 - 10); [L53] const SORT_153 msb_SORT_153 = (SORT_153)1 << (10 - 1); [L55] const SORT_155 mask_SORT_155 = (SORT_155)-1 >> (sizeof(SORT_155) * 8 - 11); [L56] const SORT_155 msb_SORT_155 = (SORT_155)1 << (11 - 1); [L58] const SORT_157 mask_SORT_157 = (SORT_157)-1 >> (sizeof(SORT_157) * 8 - 12); [L59] const SORT_157 msb_SORT_157 = (SORT_157)1 << (12 - 1); [L61] const SORT_1 var_28 = 0; [L62] const SORT_17 var_32 = 0; [L63] const SORT_6 var_38 = 0; [L64] const SORT_1 var_46 = 1; [L65] const SORT_8 var_47 = 1; [L66] const SORT_8 var_50 = 3; [L67] const SORT_8 var_53 = 2; [L68] const SORT_8 var_57 = 5; [L69] const SORT_8 var_60 = 7; [L70] const SORT_8 var_63 = 6; [L71] const SORT_8 var_67 = 4; [L72] const SORT_6 var_73 = 2; [L73] const SORT_6 var_75 = 1; [L74] const SORT_6 var_85 = 3; [L75] const SORT_14 var_96 = 11; [L76] const SORT_14 var_98 = 10; [L77] const SORT_14 var_100 = 2; [L78] const SORT_14 var_102 = 9; [L79] const SORT_14 var_118 = 21; [L80] const SORT_14 var_120 = 20; [L81] const SORT_14 var_122 = 19; [L82] const SORT_14 var_124 = 18; [L83] const SORT_14 var_126 = 17; [L84] const SORT_14 var_128 = 16; [L85] const SORT_14 var_130 = 15; [L86] const SORT_14 var_132 = 14; [L87] const SORT_14 var_134 = 8; [L88] const SORT_14 var_136 = 6; [L89] const SORT_14 var_138 = 3; [L90] const SORT_14 var_140 = 5; [L91] const SORT_14 var_160 = 4; [L92] const SORT_14 var_162 = 1; [L93] const SORT_14 var_172 = 7; [L94] const SORT_14 var_190 = 13; [L95] const SORT_14 var_198 = 12; [L96] const SORT_14 var_219 = 23; [L97] const SORT_14 var_222 = 22; [L98] const SORT_14 var_231 = 25; [L99] const SORT_14 var_234 = 27; [L100] const SORT_14 var_237 = 26; [L101] const SORT_14 var_241 = 29; [L102] const SORT_14 var_244 = 31; [L103] const SORT_14 var_247 = 30; [L104] const SORT_14 var_251 = 28; [L105] const SORT_14 var_257 = 24; [L106] const SORT_146 var_280 = 0; [L107] const SORT_17 var_300 = 3; [L109] SORT_1 input_2; [L110] SORT_1 input_3; [L111] SORT_1 input_4; [L112] SORT_1 input_5; [L113] SORT_6 input_7; [L114] SORT_8 input_9; [L115] SORT_6 input_10; [L116] SORT_1 input_11; [L117] SORT_1 input_12; [L118] SORT_1 input_13; [L119] SORT_14 input_15; [L120] SORT_6 input_16; [L121] SORT_17 input_18; [L122] SORT_6 input_19; [L123] SORT_1 input_20; [L124] SORT_1 input_21; [L125] SORT_6 input_22; [L126] SORT_6 input_23; [L127] SORT_17 input_24; [L128] SORT_17 input_25; [L129] SORT_1 input_26; [L130] SORT_6 input_27; [L132] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L133] SORT_17 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_17; [L134] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L135] SORT_6 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_6; [L136] SORT_6 state_323 = __VERIFIER_nondet_uchar() & mask_SORT_6; [L137] SORT_1 state_357 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L138] SORT_17 state_373 = __VERIFIER_nondet_uchar() & mask_SORT_17; [L139] SORT_6 state_380 = __VERIFIER_nondet_uchar() & mask_SORT_6; [L141] SORT_1 init_30_arg_1 = var_28; [L142] state_29 = init_30_arg_1 [L143] SORT_17 init_34_arg_1 = var_32; [L144] state_33 = init_34_arg_1 [L145] SORT_1 init_36_arg_1 = var_28; [L146] state_35 = init_36_arg_1 [L147] SORT_6 init_40_arg_1 = var_38; [L148] state_39 = init_40_arg_1 [L149] SORT_6 init_324_arg_1 = var_38; [L150] state_323 = init_324_arg_1 [L151] SORT_1 init_358_arg_1 = var_28; [L152] state_357 = init_358_arg_1 [L153] SORT_17 init_374_arg_1 = var_32; [L154] state_373 = init_374_arg_1 [L155] SORT_6 init_381_arg_1 = var_38; [L156] state_380 = init_381_arg_1 VAL [init_30_arg_1=0, init_324_arg_1=0, init_34_arg_1=0, init_358_arg_1=0, init_36_arg_1=0, init_374_arg_1=0, init_381_arg_1=0, init_40_arg_1=0, mask_SORT_1=1, mask_SORT_106=15, mask_SORT_14=31, mask_SORT_146=63, mask_SORT_148=127, mask_SORT_151=511, mask_SORT_153=1023, mask_SORT_155=2047, mask_SORT_157=4095, mask_SORT_17=255, mask_SORT_6=3, mask_SORT_8=7, msb_SORT_1=1, msb_SORT_106=8, msb_SORT_14=16, msb_SORT_146=32, msb_SORT_148=64, msb_SORT_151=256, msb_SORT_153=512, msb_SORT_155=1024, msb_SORT_157=2048, msb_SORT_17=128, msb_SORT_6=2, msb_SORT_8=4, state_29=0, state_323=0, state_33=0, state_35=0, state_357=0, state_373=0, state_380=0, state_39=0, var_100=2, var_102=9, var_118=21, var_120=20, var_122=19, var_124=18, var_126=17, var_128=16, var_130=15, var_132=14, var_134=8, var_136=6, var_138=3, var_140=5, var_160=4, var_162=1, var_172=7, var_190=13, var_198=12, var_219=23, var_222=22, var_231=25, var_234=27, var_237=26, var_241=29, var_244=31, var_247=30, var_251=28, var_257=24, var_28=0, var_280=0, var_300=3, var_32=0, var_38=0, var_46=1, var_47=1, var_50=3, var_53=2, var_57=5, var_60=7, var_63=6, var_67=4, var_73=2, var_75=1, var_85=3, var_96=11, var_98=10] [L159] input_2 = __VERIFIER_nondet_uchar() [L160] input_2 = input_2 & mask_SORT_1 [L161] input_3 = __VERIFIER_nondet_uchar() [L162] input_3 = input_3 & mask_SORT_1 [L163] input_4 = __VERIFIER_nondet_uchar() [L164] input_5 = __VERIFIER_nondet_uchar() [L165] input_5 = input_5 & mask_SORT_1 [L166] input_7 = __VERIFIER_nondet_uchar() [L167] input_7 = input_7 & mask_SORT_6 [L168] input_9 = __VERIFIER_nondet_uchar() [L169] input_9 = input_9 & mask_SORT_8 [L170] input_10 = __VERIFIER_nondet_uchar() [L171] input_10 = input_10 & mask_SORT_6 [L172] input_11 = __VERIFIER_nondet_uchar() [L173] input_11 = input_11 & mask_SORT_1 [L174] input_12 = __VERIFIER_nondet_uchar() [L175] input_13 = __VERIFIER_nondet_uchar() [L176] input_15 = __VERIFIER_nondet_uchar() [L177] input_15 = input_15 & mask_SORT_14 [L178] input_16 = __VERIFIER_nondet_uchar() [L179] input_18 = __VERIFIER_nondet_uchar() [L180] input_19 = __VERIFIER_nondet_uchar() [L181] input_20 = __VERIFIER_nondet_uchar() [L182] input_21 = __VERIFIER_nondet_uchar() [L183] input_22 = __VERIFIER_nondet_uchar() [L184] input_23 = __VERIFIER_nondet_uchar() [L185] input_24 = __VERIFIER_nondet_uchar() [L186] input_25 = __VERIFIER_nondet_uchar() [L187] input_26 = __VERIFIER_nondet_uchar() [L188] input_27 = __VERIFIER_nondet_uchar() [L191] SORT_1 var_31_arg_0 = state_29; [L192] SORT_1 var_31 = ~var_31_arg_0; [L193] SORT_1 var_366_arg_0 = input_5; [L194] SORT_1 var_366 = ~var_366_arg_0; [L195] var_366 = var_366 & mask_SORT_1 [L196] SORT_1 var_82_arg_0 = input_12; [L197] SORT_1 var_82_arg_1 = input_11; [L198] SORT_6 var_82 = ((SORT_6)var_82_arg_0 << 1) | var_82_arg_1; [L199] var_82 = var_82 & mask_SORT_6 [L200] SORT_6 var_83_arg_0 = var_82; [L201] var_83_arg_0 ^= var_83_arg_0 >> 4 [L202] var_83_arg_0 ^= var_83_arg_0 >> 2 [L203] var_83_arg_0 ^= var_83_arg_0 >> 1 [L204] SORT_1 var_83 = var_83_arg_0; [L205] SORT_8 var_288_arg_0 = input_9; [L206] SORT_8 var_288_arg_1 = var_53; [L207] SORT_1 var_288 = var_288_arg_0 == var_288_arg_1; [L208] SORT_8 var_287_arg_0 = input_9; [L209] SORT_8 var_287_arg_1 = var_47; [L210] SORT_1 var_287 = var_287_arg_0 == var_287_arg_1; [L211] SORT_8 var_286_arg_0 = input_9; [L212] SORT_8 var_286_arg_1 = var_67; [L213] SORT_1 var_286 = var_286_arg_0 == var_286_arg_1; [L214] SORT_8 var_285_arg_0 = input_9; [L215] SORT_8 var_285_arg_1 = var_57; [L216] SORT_1 var_285 = var_285_arg_0 == var_285_arg_1; [L217] SORT_1 var_289_arg_0 = var_286; [L218] SORT_1 var_289_arg_1 = var_285; [L219] SORT_6 var_289 = ((SORT_6)var_289_arg_0 << 1) | var_289_arg_1; [L220] var_289 = var_289 & mask_SORT_6 [L221] SORT_1 var_290_arg_0 = var_287; [L222] SORT_6 var_290_arg_1 = var_289; [L223] SORT_8 var_290 = ((SORT_8)var_290_arg_0 << 2) | var_290_arg_1; [L224] var_290 = var_290 & mask_SORT_8 [L225] SORT_1 var_291_arg_0 = var_288; [L226] SORT_8 var_291_arg_1 = var_290; [L227] SORT_106 var_291 = ((SORT_106)var_291_arg_0 << 3) | var_291_arg_1; [L228] var_291 = var_291 & mask_SORT_106 [L229] SORT_106 var_292_arg_0 = var_291; [L230] SORT_1 var_292 = var_292_arg_0 != 0; [L231] SORT_6 var_76_arg_0 = input_10; [L232] SORT_6 var_76_arg_1 = var_75; [L233] SORT_1 var_76 = var_76_arg_0 == var_76_arg_1; [L234] SORT_8 var_64_arg_0 = input_9; [L235] SORT_8 var_64_arg_1 = var_63; [L236] SORT_1 var_64 = var_64_arg_0 == var_64_arg_1; [L237] SORT_8 var_61_arg_0 = input_9; [L238] SORT_8 var_61_arg_1 = var_60; [L239] SORT_1 var_61 = var_61_arg_0 == var_61_arg_1; [L240] SORT_1 var_65_arg_0 = var_64; [L241] SORT_1 var_65_arg_1 = var_61; [L242] SORT_1 var_65 = var_65_arg_0 | var_65_arg_1; [L243] var_65 = var_65 & mask_SORT_1 [L244] SORT_8 var_58_arg_0 = input_9; [L245] SORT_8 var_58_arg_1 = var_57; [L246] SORT_1 var_58 = var_58_arg_0 == var_58_arg_1; [L247] SORT_8 var_68_arg_0 = input_9; [L248] SORT_8 var_68_arg_1 = var_67; [L249] SORT_1 var_68 = var_68_arg_0 == var_68_arg_1; [L250] SORT_1 var_69_arg_0 = var_58; [L251] SORT_1 var_69_arg_1 = var_68; [L252] SORT_6 var_69 = ((SORT_6)var_69_arg_0 << 1) | var_69_arg_1; [L253] var_69 = var_69 & mask_SORT_6 [L254] SORT_1 var_70_arg_0 = var_65; [L255] SORT_6 var_70_arg_1 = var_69; [L256] SORT_8 var_70 = ((SORT_8)var_70_arg_0 << 2) | var_70_arg_1; [L257] var_70 = var_70 & mask_SORT_8 [L258] SORT_8 var_71_arg_0 = var_70; [L259] SORT_1 var_71 = var_71_arg_0 != 0; [L260] SORT_1 var_62_arg_0 = var_61; [L261] SORT_1 var_62_arg_1 = var_46; [L262] SORT_1 var_62_arg_2 = var_46; [L263] EXPR var_62_arg_0 ? var_62_arg_1 : var_62_arg_2 [L263] SORT_1 var_62 = var_62_arg_0 ? var_62_arg_1 : var_62_arg_2; [L264] SORT_1 var_59_arg_0 = var_58; [L265] SORT_1 var_59_arg_1 = var_28; [L266] SORT_1 var_59_arg_2 = var_28; [L267] EXPR var_59_arg_0 ? var_59_arg_1 : var_59_arg_2 [L267] SORT_1 var_59 = var_59_arg_0 ? var_59_arg_1 : var_59_arg_2; [L268] SORT_1 var_66_arg_0 = var_65; [L269] SORT_1 var_66_arg_1 = var_62; [L270] SORT_1 var_66_arg_2 = var_59; [L271] EXPR var_66_arg_0 ? var_66_arg_1 : var_66_arg_2 [L271] SORT_1 var_66 = var_66_arg_0 ? var_66_arg_1 : var_66_arg_2; [L272] SORT_8 var_54_arg_0 = input_9; [L273] SORT_8 var_54_arg_1 = var_53; [L274] SORT_1 var_54 = var_54_arg_0 == var_54_arg_1; [L275] SORT_8 var_51_arg_0 = input_9; [L276] SORT_8 var_51_arg_1 = var_50; [L277] SORT_1 var_51 = var_51_arg_0 == var_51_arg_1; [L278] SORT_1 var_55_arg_0 = var_54; [L279] SORT_1 var_55_arg_1 = var_51; [L280] SORT_1 var_55 = var_55_arg_0 | var_55_arg_1; [L281] var_55 = var_55 & mask_SORT_1 [L282] SORT_1 var_52_arg_0 = var_51; [L283] SORT_1 var_52_arg_1 = var_46; [L284] SORT_1 var_52_arg_2 = var_28; [L285] EXPR var_52_arg_0 ? var_52_arg_1 : var_52_arg_2 [L285] SORT_1 var_52 = var_52_arg_0 ? var_52_arg_1 : var_52_arg_2; [L286] SORT_8 var_48_arg_0 = input_9; [L287] SORT_8 var_48_arg_1 = var_47; [L288] SORT_1 var_48 = var_48_arg_0 == var_48_arg_1; [L289] SORT_1 var_49_arg_0 = var_48; [L290] SORT_1 var_49_arg_1 = var_28; [L291] SORT_1 var_49_arg_2 = var_46; [L292] EXPR var_49_arg_0 ? var_49_arg_1 : var_49_arg_2 [L292] SORT_1 var_49 = var_49_arg_0 ? var_49_arg_1 : var_49_arg_2; [L293] SORT_1 var_56_arg_0 = var_55; [L294] SORT_1 var_56_arg_1 = var_52; [L295] SORT_1 var_56_arg_2 = var_49; [L296] EXPR var_56_arg_0 ? var_56_arg_1 : var_56_arg_2 [L296] SORT_1 var_56 = var_56_arg_0 ? var_56_arg_1 : var_56_arg_2; [L297] SORT_1 var_72_arg_0 = var_71; [L298] SORT_1 var_72_arg_1 = var_66; [L299] SORT_1 var_72_arg_2 = var_56; [L300] EXPR var_72_arg_0 ? var_72_arg_1 : var_72_arg_2 [L300] SORT_1 var_72 = var_72_arg_0 ? var_72_arg_1 : var_72_arg_2; [L301] var_72 = var_72 & mask_SORT_1 [L302] SORT_6 var_74_arg_0 = input_10; [L303] SORT_6 var_74_arg_1 = var_73; [L304] SORT_1 var_74 = var_74_arg_0 == var_74_arg_1; [L305] SORT_1 var_282_arg_0 = var_76; [L306] SORT_1 var_282_arg_1 = var_74; [L307] SORT_6 var_282 = ((SORT_6)var_282_arg_0 << 1) | var_282_arg_1; [L308] var_282 = var_282 & mask_SORT_6 [L309] SORT_6 var_283_arg_0 = var_282; [L310] SORT_1 var_283 = var_283_arg_0 != 0; [L311] SORT_1 var_284_arg_0 = var_72; [L312] SORT_1 var_284_arg_1 = var_283; [L313] SORT_1 var_284_arg_2 = var_28; [L314] EXPR var_284_arg_0 ? var_284_arg_1 : var_284_arg_2 [L314] SORT_1 var_284 = var_284_arg_0 ? var_284_arg_1 : var_284_arg_2; [L315] SORT_1 var_293_arg_0 = var_292; [L316] SORT_1 var_293_arg_1 = var_76; [L317] SORT_1 var_293_arg_2 = var_284; [L318] EXPR var_293_arg_0 ? var_293_arg_1 : var_293_arg_2 [L318] SORT_1 var_293 = var_293_arg_0 ? var_293_arg_1 : var_293_arg_2; [L319] SORT_6 var_86_arg_0 = input_7; [L320] SORT_6 var_86_arg_1 = var_85; [L321] SORT_1 var_86 = var_86_arg_0 == var_86_arg_1; [L322] SORT_1 var_294_arg_0 = var_293; [L323] SORT_1 var_294_arg_1 = var_86; [L324] SORT_6 var_294 = ((SORT_6)var_294_arg_0 << 1) | var_294_arg_1; [L325] var_294 = var_294 & mask_SORT_6 [L326] SORT_1 var_295_arg_0 = var_83; [L327] SORT_6 var_295_arg_1 = var_294; [L328] SORT_8 var_295 = ((SORT_8)var_295_arg_0 << 2) | var_295_arg_1; [L329] var_295 = var_295 & mask_SORT_8 [L330] SORT_8 var_296_arg_0 = var_295; [L331] SORT_1 var_296 = var_296_arg_0 != 0; [L332] SORT_1 var_297_arg_0 = input_13; [L333] SORT_1 var_297_arg_1 = var_296; [L334] SORT_6 var_297 = ((SORT_6)var_297_arg_0 << 1) | var_297_arg_1; [L335] var_297 = var_297 & mask_SORT_6 [L336] SORT_6 var_298_arg_0 = var_297; [L337] SORT_1 var_298 = var_298_arg_0 == mask_SORT_6; [L338] SORT_1 var_41_arg_0 = state_35; [L339] SORT_6 var_41_arg_1 = state_39; [L340] SORT_6 var_41_arg_2 = input_19; [L341] EXPR var_41_arg_0 ? var_41_arg_1 : var_41_arg_2 [L341] SORT_6 var_41 = var_41_arg_0 ? var_41_arg_1 : var_41_arg_2; [L342] SORT_6 var_44_arg_0 = var_41; [L343] SORT_1 var_44 = var_44_arg_0 >> 0; [L344] var_44 = var_44 & mask_SORT_1 [L345] SORT_6 var_42_arg_0 = var_41; [L346] SORT_1 var_42 = var_42_arg_0 >> 1; [L347] var_42 = var_42 & mask_SORT_1 [L348] SORT_1 var_359_arg_0 = state_35; [L349] SORT_1 var_359_arg_1 = state_357; [L350] SORT_1 var_359_arg_2 = input_20; [L351] EXPR var_359_arg_0 ? var_359_arg_1 : var_359_arg_2 [L351] SORT_1 var_359 = var_359_arg_0 ? var_359_arg_1 : var_359_arg_2; [L352] SORT_1 var_360_arg_0 = var_42; [L353] SORT_1 var_360_arg_1 = var_359; [L354] SORT_1 var_360_arg_2 = var_28; [L355] EXPR var_360_arg_0 ? var_360_arg_1 : var_360_arg_2 [L355] SORT_1 var_360 = var_360_arg_0 ? var_360_arg_1 : var_360_arg_2; [L356] SORT_1 var_361_arg_0 = var_44; [L357] SORT_1 var_361_arg_1 = var_28; [L358] SORT_1 var_361_arg_2 = var_360; [L359] EXPR var_361_arg_0 ? var_361_arg_1 : var_361_arg_2 [L359] SORT_1 var_361 = var_361_arg_0 ? var_361_arg_1 : var_361_arg_2; [L360] var_361 = var_361 & mask_SORT_1 [L361] SORT_1 var_362_arg_0 = var_298; [L362] SORT_1 var_362_arg_1 = var_361; [L363] SORT_6 var_362 = ((SORT_6)var_362_arg_0 << 1) | var_362_arg_1; [L364] var_362 = var_362 & mask_SORT_6 [L365] SORT_6 var_363_arg_0 = var_362; [L366] SORT_1 var_363 = var_363_arg_0 != 0; [L367] SORT_14 var_248_arg_0 = input_15; [L368] SORT_14 var_248_arg_1 = var_247; [L369] SORT_1 var_248 = var_248_arg_0 == var_248_arg_1; [L370] SORT_14 var_245_arg_0 = input_15; [L371] SORT_14 var_245_arg_1 = var_244; [L372] SORT_1 var_245 = var_245_arg_0 == var_245_arg_1; [L373] SORT_1 var_249_arg_0 = var_248; [L374] SORT_1 var_249_arg_1 = var_245; [L375] SORT_1 var_249 = var_249_arg_0 | var_249_arg_1; [L376] var_249 = var_249 & mask_SORT_1 [L377] SORT_14 var_242_arg_0 = input_15; [L378] SORT_14 var_242_arg_1 = var_241; [L379] SORT_1 var_242 = var_242_arg_0 == var_242_arg_1; [L380] SORT_14 var_252_arg_0 = input_15; [L381] SORT_14 var_252_arg_1 = var_251; [L382] SORT_1 var_252 = var_252_arg_0 == var_252_arg_1; [L383] SORT_1 var_253_arg_0 = var_242; [L384] SORT_1 var_253_arg_1 = var_252; [L385] SORT_6 var_253 = ((SORT_6)var_253_arg_0 << 1) | var_253_arg_1; [L386] var_253 = var_253 & mask_SORT_6 [L387] SORT_1 var_254_arg_0 = var_249; [L388] SORT_6 var_254_arg_1 = var_253; [L389] SORT_8 var_254 = ((SORT_8)var_254_arg_0 << 2) | var_254_arg_1; [L390] var_254 = var_254 & mask_SORT_8 [L391] SORT_8 var_255_arg_0 = var_254; [L392] SORT_1 var_255 = var_255_arg_0 != 0; [L393] SORT_14 var_238_arg_0 = input_15; [L394] SORT_14 var_238_arg_1 = var_237; [L395] SORT_1 var_238 = var_238_arg_0 == var_238_arg_1; [L396] SORT_14 var_235_arg_0 = input_15; [L397] SORT_14 var_235_arg_1 = var_234; [L398] SORT_1 var_235 = var_235_arg_0 == var_235_arg_1; [L399] SORT_1 var_239_arg_0 = var_238; [L400] SORT_1 var_239_arg_1 = var_235; [L401] SORT_1 var_239 = var_239_arg_0 | var_239_arg_1; [L402] var_239 = var_239 & mask_SORT_1 [L403] SORT_14 var_232_arg_0 = input_15; [L404] SORT_14 var_232_arg_1 = var_231; [L405] SORT_1 var_232 = var_232_arg_0 == var_232_arg_1; [L406] SORT_14 var_258_arg_0 = input_15; [L407] SORT_14 var_258_arg_1 = var_257; [L408] SORT_1 var_258 = var_258_arg_0 == var_258_arg_1; [L409] SORT_1 var_259_arg_0 = var_232; [L410] SORT_1 var_259_arg_1 = var_258; [L411] SORT_6 var_259 = ((SORT_6)var_259_arg_0 << 1) | var_259_arg_1; [L412] var_259 = var_259 & mask_SORT_6 [L413] SORT_1 var_260_arg_0 = var_239; [L414] SORT_6 var_260_arg_1 = var_259; [L415] SORT_8 var_260 = ((SORT_8)var_260_arg_0 << 2) | var_260_arg_1; [L416] var_260 = var_260 & mask_SORT_8 [L417] SORT_1 var_261_arg_0 = var_255; [L418] SORT_8 var_261_arg_1 = var_260; [L419] SORT_106 var_261 = ((SORT_106)var_261_arg_0 << 3) | var_261_arg_1; [L420] var_261 = var_261 & mask_SORT_106 [L421] SORT_106 var_262_arg_0 = var_261; [L422] SORT_1 var_262 = var_262_arg_0 != 0; [L423] SORT_14 var_223_arg_0 = input_15; [L424] SORT_14 var_223_arg_1 = var_222; [L425] SORT_1 var_223 = var_223_arg_0 == var_223_arg_1; [L426] SORT_14 var_220_arg_0 = input_15; [L427] SORT_14 var_220_arg_1 = var_219; [L428] SORT_1 var_220 = var_220_arg_0 == var_220_arg_1; [L429] SORT_1 var_224_arg_0 = var_223; [L430] SORT_1 var_224_arg_1 = var_220; [L431] SORT_1 var_224 = var_224_arg_0 | var_224_arg_1; [L432] var_224 = var_224 & mask_SORT_1 [L433] SORT_14 var_217_arg_0 = input_15; [L434] SORT_14 var_217_arg_1 = var_118; [L435] SORT_1 var_217 = var_217_arg_0 == var_217_arg_1; [L436] SORT_14 var_226_arg_0 = input_15; [L437] SORT_14 var_226_arg_1 = var_120; [L438] SORT_1 var_226 = var_226_arg_0 == var_226_arg_1; [L439] SORT_1 var_227_arg_0 = var_217; [L440] SORT_1 var_227_arg_1 = var_226; [L441] SORT_6 var_227 = ((SORT_6)var_227_arg_0 << 1) | var_227_arg_1; [L442] var_227 = var_227 & mask_SORT_6 [L443] SORT_1 var_228_arg_0 = var_224; [L444] SORT_6 var_228_arg_1 = var_227; [L445] SORT_8 var_228 = ((SORT_8)var_228_arg_0 << 2) | var_228_arg_1; [L446] var_228 = var_228 & mask_SORT_8 [L447] SORT_8 var_229_arg_0 = var_228; [L448] SORT_1 var_229 = var_229_arg_0 != 0; [L449] SORT_14 var_214_arg_0 = input_15; [L450] SORT_14 var_214_arg_1 = var_124; [L451] SORT_1 var_214 = var_214_arg_0 == var_214_arg_1; [L452] SORT_14 var_212_arg_0 = input_15; [L453] SORT_14 var_212_arg_1 = var_122; [L454] SORT_1 var_212 = var_212_arg_0 == var_212_arg_1; [L455] SORT_1 var_215_arg_0 = var_214; [L456] SORT_1 var_215_arg_1 = var_212; [L457] SORT_1 var_215 = var_215_arg_0 | var_215_arg_1; [L458] var_215 = var_215 & mask_SORT_1 [L459] SORT_14 var_210_arg_0 = input_15; [L460] SORT_14 var_210_arg_1 = var_126; [L461] SORT_1 var_210 = var_210_arg_0 == var_210_arg_1; [L462] SORT_14 var_264_arg_0 = input_15; [L463] SORT_14 var_264_arg_1 = var_128; [L464] SORT_1 var_264 = var_264_arg_0 == var_264_arg_1; [L465] SORT_1 var_265_arg_0 = var_210; [L466] SORT_1 var_265_arg_1 = var_264; [L467] SORT_6 var_265 = ((SORT_6)var_265_arg_0 << 1) | var_265_arg_1; [L468] var_265 = var_265 & mask_SORT_6 [L469] SORT_1 var_266_arg_0 = var_215; [L470] SORT_6 var_266_arg_1 = var_265; [L471] SORT_8 var_266 = ((SORT_8)var_266_arg_0 << 2) | var_266_arg_1; [L472] var_266 = var_266 & mask_SORT_8 [L473] SORT_1 var_267_arg_0 = var_229; [L474] SORT_8 var_267_arg_1 = var_266; [L475] SORT_106 var_267 = ((SORT_106)var_267_arg_0 << 3) | var_267_arg_1; [L476] var_267 = var_267 & mask_SORT_106 [L477] SORT_1 var_268_arg_0 = var_262; [L478] SORT_106 var_268_arg_1 = var_267; [L479] SORT_14 var_268 = ((SORT_14)var_268_arg_0 << 4) | var_268_arg_1; [L480] var_268 = var_268 & mask_SORT_14 [L481] SORT_14 var_269_arg_0 = var_268; [L482] SORT_1 var_269 = var_269_arg_0 != 0; [L483] SORT_1 var_246_arg_0 = var_245; [L484] SORT_1 var_246_arg_1 = var_46; [L485] SORT_1 var_246_arg_2 = var_46; [L486] EXPR var_246_arg_0 ? var_246_arg_1 : var_246_arg_2 [L486] SORT_1 var_246 = var_246_arg_0 ? var_246_arg_1 : var_246_arg_2; [L487] SORT_1 var_243_arg_0 = var_242; [L488] SORT_1 var_243_arg_1 = var_46; [L489] SORT_1 var_243_arg_2 = var_46; [L490] EXPR var_243_arg_0 ? var_243_arg_1 : var_243_arg_2 [L490] SORT_1 var_243 = var_243_arg_0 ? var_243_arg_1 : var_243_arg_2; [L491] SORT_1 var_250_arg_0 = var_249; [L492] SORT_1 var_250_arg_1 = var_246; [L493] SORT_1 var_250_arg_2 = var_243; [L494] EXPR var_250_arg_0 ? var_250_arg_1 : var_250_arg_2 [L494] SORT_1 var_250 = var_250_arg_0 ? var_250_arg_1 : var_250_arg_2; [L495] SORT_1 var_236_arg_0 = var_235; [L496] SORT_1 var_236_arg_1 = var_46; [L497] SORT_1 var_236_arg_2 = var_46; [L498] EXPR var_236_arg_0 ? var_236_arg_1 : var_236_arg_2 [L498] SORT_1 var_236 = var_236_arg_0 ? var_236_arg_1 : var_236_arg_2; [L499] SORT_1 var_233_arg_0 = var_232; [L500] SORT_1 var_233_arg_1 = var_46; [L501] SORT_1 var_233_arg_2 = var_46; [L502] EXPR var_233_arg_0 ? var_233_arg_1 : var_233_arg_2 [L502] SORT_1 var_233 = var_233_arg_0 ? var_233_arg_1 : var_233_arg_2; [L503] SORT_1 var_240_arg_0 = var_239; [L504] SORT_1 var_240_arg_1 = var_236; [L505] SORT_1 var_240_arg_2 = var_233; [L506] EXPR var_240_arg_0 ? var_240_arg_1 : var_240_arg_2 [L506] SORT_1 var_240 = var_240_arg_0 ? var_240_arg_1 : var_240_arg_2; [L507] SORT_1 var_256_arg_0 = var_255; [L508] SORT_1 var_256_arg_1 = var_250; [L509] SORT_1 var_256_arg_2 = var_240; [L510] EXPR var_256_arg_0 ? var_256_arg_1 : var_256_arg_2 [L510] SORT_1 var_256 = var_256_arg_0 ? var_256_arg_1 : var_256_arg_2; [L511] SORT_1 var_221_arg_0 = var_220; [L512] SORT_1 var_221_arg_1 = var_46; [L513] SORT_1 var_221_arg_2 = var_46; [L514] EXPR var_221_arg_0 ? var_221_arg_1 : var_221_arg_2 [L514] SORT_1 var_221 = var_221_arg_0 ? var_221_arg_1 : var_221_arg_2; [L515] SORT_1 var_218_arg_0 = var_217; [L516] SORT_1 var_218_arg_1 = var_28; [L517] SORT_1 var_218_arg_2 = var_28; [L518] EXPR var_218_arg_0 ? var_218_arg_1 : var_218_arg_2 [L518] SORT_1 var_218 = var_218_arg_0 ? var_218_arg_1 : var_218_arg_2; [L519] SORT_1 var_225_arg_0 = var_224; [L520] SORT_1 var_225_arg_1 = var_221; [L521] SORT_1 var_225_arg_2 = var_218; [L522] EXPR var_225_arg_0 ? var_225_arg_1 : var_225_arg_2 [L522] SORT_1 var_225 = var_225_arg_0 ? var_225_arg_1 : var_225_arg_2; [L523] SORT_1 var_213_arg_0 = var_212; [L524] SORT_1 var_213_arg_1 = var_28; [L525] SORT_1 var_213_arg_2 = var_28; [L526] EXPR var_213_arg_0 ? var_213_arg_1 : var_213_arg_2 [L526] SORT_1 var_213 = var_213_arg_0 ? var_213_arg_1 : var_213_arg_2; [L527] SORT_1 var_211_arg_0 = var_210; [L528] SORT_1 var_211_arg_1 = var_28; [L529] SORT_1 var_211_arg_2 = var_28; [L530] EXPR var_211_arg_0 ? var_211_arg_1 : var_211_arg_2 [L530] SORT_1 var_211 = var_211_arg_0 ? var_211_arg_1 : var_211_arg_2; [L531] SORT_1 var_216_arg_0 = var_215; [L532] SORT_1 var_216_arg_1 = var_213; [L533] SORT_1 var_216_arg_2 = var_211; [L534] EXPR var_216_arg_0 ? var_216_arg_1 : var_216_arg_2 [L534] SORT_1 var_216 = var_216_arg_0 ? var_216_arg_1 : var_216_arg_2; [L535] SORT_1 var_230_arg_0 = var_229; [L536] SORT_1 var_230_arg_1 = var_225; [L537] SORT_1 var_230_arg_2 = var_216; [L538] EXPR var_230_arg_0 ? var_230_arg_1 : var_230_arg_2 [L538] SORT_1 var_230 = var_230_arg_0 ? var_230_arg_1 : var_230_arg_2; [L539] SORT_1 var_263_arg_0 = var_262; [L540] SORT_1 var_263_arg_1 = var_256; [L541] SORT_1 var_263_arg_2 = var_230; [L542] EXPR var_263_arg_0 ? var_263_arg_1 : var_263_arg_2 [L542] SORT_1 var_263 = var_263_arg_0 ? var_263_arg_1 : var_263_arg_2; [L543] SORT_14 var_195_arg_0 = input_15; [L544] SORT_14 var_195_arg_1 = var_132; [L545] SORT_1 var_195 = var_195_arg_0 == var_195_arg_1; [L546] SORT_14 var_193_arg_0 = input_15; [L547] SORT_14 var_193_arg_1 = var_130; [L548] SORT_1 var_193 = var_193_arg_0 == var_193_arg_1; [L549] SORT_1 var_196_arg_0 = var_195; [L550] SORT_1 var_196_arg_1 = var_193; [L551] SORT_1 var_196 = var_196_arg_0 | var_196_arg_1; [L552] var_196 = var_196 & mask_SORT_1 [L553] SORT_14 var_191_arg_0 = input_15; [L554] SORT_14 var_191_arg_1 = var_190; [L555] SORT_1 var_191 = var_191_arg_0 == var_191_arg_1; [L556] SORT_14 var_199_arg_0 = input_15; [L557] SORT_14 var_199_arg_1 = var_198; [L558] SORT_1 var_199 = var_199_arg_0 == var_199_arg_1; [L559] SORT_1 var_200_arg_0 = var_191; [L560] SORT_1 var_200_arg_1 = var_199; [L561] SORT_6 var_200 = ((SORT_6)var_200_arg_0 << 1) | var_200_arg_1; [L562] var_200 = var_200 & mask_SORT_6 [L563] SORT_1 var_201_arg_0 = var_196; [L564] SORT_6 var_201_arg_1 = var_200; [L565] SORT_8 var_201 = ((SORT_8)var_201_arg_0 << 2) | var_201_arg_1; [L566] var_201 = var_201 & mask_SORT_8 [L567] SORT_8 var_202_arg_0 = var_201; [L568] SORT_1 var_202 = var_202_arg_0 != 0; [L569] SORT_14 var_187_arg_0 = input_15; [L570] SORT_14 var_187_arg_1 = var_98; [L571] SORT_1 var_187 = var_187_arg_0 == var_187_arg_1; [L572] SORT_14 var_185_arg_0 = input_15; [L573] SORT_14 var_185_arg_1 = var_96; [L574] SORT_1 var_185 = var_185_arg_0 == var_185_arg_1; [L575] SORT_1 var_188_arg_0 = var_187; [L576] SORT_1 var_188_arg_1 = var_185; [L577] SORT_1 var_188 = var_188_arg_0 | var_188_arg_1; [L578] var_188 = var_188 & mask_SORT_1 [L579] SORT_14 var_183_arg_0 = input_15; [L580] SORT_14 var_183_arg_1 = var_102; [L581] SORT_1 var_183 = var_183_arg_0 == var_183_arg_1; [L582] SORT_14 var_204_arg_0 = input_15; [L583] SORT_14 var_204_arg_1 = var_134; [L584] SORT_1 var_204 = var_204_arg_0 == var_204_arg_1; [L585] SORT_1 var_205_arg_0 = var_183; [L586] SORT_1 var_205_arg_1 = var_204; [L587] SORT_6 var_205 = ((SORT_6)var_205_arg_0 << 1) | var_205_arg_1; [L588] var_205 = var_205 & mask_SORT_6 [L589] SORT_1 var_206_arg_0 = var_188; [L590] SORT_6 var_206_arg_1 = var_205; [L591] SORT_8 var_206 = ((SORT_8)var_206_arg_0 << 2) | var_206_arg_1; [L592] var_206 = var_206 & mask_SORT_8 [L593] SORT_1 var_207_arg_0 = var_202; [L594] SORT_8 var_207_arg_1 = var_206; [L595] SORT_106 var_207 = ((SORT_106)var_207_arg_0 << 3) | var_207_arg_1; [L596] var_207 = var_207 & mask_SORT_106 [L597] SORT_106 var_208_arg_0 = var_207; [L598] SORT_1 var_208 = var_208_arg_0 != 0; [L599] SORT_1 var_194_arg_0 = var_193; [L600] SORT_1 var_194_arg_1 = var_28; [L601] SORT_1 var_194_arg_2 = var_28; [L602] EXPR var_194_arg_0 ? var_194_arg_1 : var_194_arg_2 [L602] SORT_1 var_194 = var_194_arg_0 ? var_194_arg_1 : var_194_arg_2; [L603] SORT_1 var_192_arg_0 = var_191; [L604] SORT_1 var_192_arg_1 = var_46; [L605] SORT_1 var_192_arg_2 = var_46; [L606] EXPR var_192_arg_0 ? var_192_arg_1 : var_192_arg_2 [L606] SORT_1 var_192 = var_192_arg_0 ? var_192_arg_1 : var_192_arg_2; [L607] SORT_1 var_197_arg_0 = var_196; [L608] SORT_1 var_197_arg_1 = var_194; [L609] SORT_1 var_197_arg_2 = var_192; [L610] EXPR var_197_arg_0 ? var_197_arg_1 : var_197_arg_2 [L610] SORT_1 var_197 = var_197_arg_0 ? var_197_arg_1 : var_197_arg_2; [L611] SORT_1 var_186_arg_0 = var_185; [L612] SORT_1 var_186_arg_1 = var_28; [L613] SORT_1 var_186_arg_2 = var_28; [L614] EXPR var_186_arg_0 ? var_186_arg_1 : var_186_arg_2 [L614] SORT_1 var_186 = var_186_arg_0 ? var_186_arg_1 : var_186_arg_2; [L615] SORT_1 var_184_arg_0 = var_183; [L616] SORT_1 var_184_arg_1 = var_28; [L617] SORT_1 var_184_arg_2 = var_28; [L618] EXPR var_184_arg_0 ? var_184_arg_1 : var_184_arg_2 [L618] SORT_1 var_184 = var_184_arg_0 ? var_184_arg_1 : var_184_arg_2; [L619] SORT_1 var_189_arg_0 = var_188; [L620] SORT_1 var_189_arg_1 = var_186; [L621] SORT_1 var_189_arg_2 = var_184; [L622] EXPR var_189_arg_0 ? var_189_arg_1 : var_189_arg_2 [L622] SORT_1 var_189 = var_189_arg_0 ? var_189_arg_1 : var_189_arg_2; [L623] SORT_1 var_203_arg_0 = var_202; [L624] SORT_1 var_203_arg_1 = var_197; [L625] SORT_1 var_203_arg_2 = var_189; [L626] EXPR var_203_arg_0 ? var_203_arg_1 : var_203_arg_2 [L626] SORT_1 var_203 = var_203_arg_0 ? var_203_arg_1 : var_203_arg_2; [L627] SORT_14 var_175_arg_0 = input_15; [L628] SORT_14 var_175_arg_1 = var_136; [L629] SORT_1 var_175 = var_175_arg_0 == var_175_arg_1; [L630] SORT_14 var_173_arg_0 = input_15; [L631] SORT_14 var_173_arg_1 = var_172; [L632] SORT_1 var_173 = var_173_arg_0 == var_173_arg_1; [L633] SORT_1 var_176_arg_0 = var_175; [L634] SORT_1 var_176_arg_1 = var_173; [L635] SORT_1 var_176 = var_176_arg_0 | var_176_arg_1; [L636] var_176 = var_176 & mask_SORT_1 [L637] SORT_14 var_170_arg_0 = input_15; [L638] SORT_14 var_170_arg_1 = var_140; [L639] SORT_1 var_170 = var_170_arg_0 == var_170_arg_1; [L640] SORT_14 var_178_arg_0 = input_15; [L641] SORT_14 var_178_arg_1 = var_160; [L642] SORT_1 var_178 = var_178_arg_0 == var_178_arg_1; [L643] SORT_1 var_179_arg_0 = var_170; [L644] SORT_1 var_179_arg_1 = var_178; [L645] SORT_6 var_179 = ((SORT_6)var_179_arg_0 << 1) | var_179_arg_1; [L646] var_179 = var_179 & mask_SORT_6 [L647] SORT_1 var_180_arg_0 = var_176; [L648] SORT_6 var_180_arg_1 = var_179; [L649] SORT_8 var_180 = ((SORT_8)var_180_arg_0 << 2) | var_180_arg_1; [L650] var_180 = var_180 & mask_SORT_8 [L651] SORT_8 var_181_arg_0 = var_180; [L652] SORT_1 var_181 = var_181_arg_0 != 0; [L653] SORT_1 var_174_arg_0 = var_173; [L654] SORT_1 var_174_arg_1 = var_46; [L655] SORT_1 var_174_arg_2 = var_28; [L656] EXPR var_174_arg_0 ? var_174_arg_1 : var_174_arg_2 [L656] SORT_1 var_174 = var_174_arg_0 ? var_174_arg_1 : var_174_arg_2; [L657] SORT_1 var_171_arg_0 = var_170; [L658] SORT_1 var_171_arg_1 = var_28; [L659] SORT_1 var_171_arg_2 = var_28; [L660] EXPR var_171_arg_0 ? var_171_arg_1 : var_171_arg_2 [L660] SORT_1 var_171 = var_171_arg_0 ? var_171_arg_1 : var_171_arg_2; [L661] SORT_1 var_177_arg_0 = var_176; [L662] SORT_1 var_177_arg_1 = var_174; [L663] SORT_1 var_177_arg_2 = var_171; [L664] EXPR var_177_arg_0 ? var_177_arg_1 : var_177_arg_2 [L664] SORT_1 var_177 = var_177_arg_0 ? var_177_arg_1 : var_177_arg_2; [L665] SORT_14 var_167_arg_0 = input_15; [L666] SORT_14 var_167_arg_1 = var_100; [L667] SORT_1 var_167 = var_167_arg_0 == var_167_arg_1; [L668] SORT_14 var_165_arg_0 = input_15; [L669] SORT_14 var_165_arg_1 = var_138; [L670] SORT_1 var_165 = var_165_arg_0 == var_165_arg_1; [L671] SORT_1 var_168_arg_0 = var_167; [L672] SORT_1 var_168_arg_1 = var_165; [L673] SORT_1 var_168 = var_168_arg_0 | var_168_arg_1; [L674] var_168 = var_168 & mask_SORT_1 [L675] SORT_1 var_166_arg_0 = var_165; [L676] SORT_1 var_166_arg_1 = var_28; [L677] SORT_1 var_166_arg_2 = var_28; [L678] EXPR var_166_arg_0 ? var_166_arg_1 : var_166_arg_2 [L678] SORT_1 var_166 = var_166_arg_0 ? var_166_arg_1 : var_166_arg_2; [L679] SORT_14 var_163_arg_0 = input_15; [L680] SORT_14 var_163_arg_1 = var_162; [L681] SORT_1 var_163 = var_163_arg_0 == var_163_arg_1; [L682] SORT_1 var_164_arg_0 = var_163; [L683] SORT_1 var_164_arg_1 = var_46; [L684] SORT_1 var_164_arg_2 = var_46; [L685] EXPR var_164_arg_0 ? var_164_arg_1 : var_164_arg_2 [L685] SORT_1 var_164 = var_164_arg_0 ? var_164_arg_1 : var_164_arg_2; [L686] SORT_1 var_169_arg_0 = var_168; [L687] SORT_1 var_169_arg_1 = var_166; [L688] SORT_1 var_169_arg_2 = var_164; [L689] EXPR var_169_arg_0 ? var_169_arg_1 : var_169_arg_2 [L689] SORT_1 var_169 = var_169_arg_0 ? var_169_arg_1 : var_169_arg_2; [L690] SORT_1 var_182_arg_0 = var_181; [L691] SORT_1 var_182_arg_1 = var_177; [L692] SORT_1 var_182_arg_2 = var_169; [L693] EXPR var_182_arg_0 ? var_182_arg_1 : var_182_arg_2 [L693] SORT_1 var_182 = var_182_arg_0 ? var_182_arg_1 : var_182_arg_2; [L694] SORT_1 var_209_arg_0 = var_208; [L695] SORT_1 var_209_arg_1 = var_203; [L696] SORT_1 var_209_arg_2 = var_182; [L697] EXPR var_209_arg_0 ? var_209_arg_1 : var_209_arg_2 [L697] SORT_1 var_209 = var_209_arg_0 ? var_209_arg_1 : var_209_arg_2; [L698] SORT_1 var_270_arg_0 = var_269; [L699] SORT_1 var_270_arg_1 = var_263; [L700] SORT_1 var_270_arg_2 = var_209; [L701] EXPR var_270_arg_0 ? var_270_arg_1 : var_270_arg_2 [L701] SORT_1 var_270 = var_270_arg_0 ? var_270_arg_1 : var_270_arg_2; [L702] SORT_14 var_161_arg_0 = input_15; [L703] SORT_14 var_161_arg_1 = var_160; [L704] SORT_1 var_161 = var_161_arg_0 == var_161_arg_1; [L705] SORT_14 var_141_arg_0 = input_15; [L706] SORT_14 var_141_arg_1 = var_140; [L707] SORT_1 var_141 = var_141_arg_0 == var_141_arg_1; [L708] SORT_14 var_139_arg_0 = input_15; [L709] SORT_14 var_139_arg_1 = var_138; [L710] SORT_1 var_139 = var_139_arg_0 == var_139_arg_1; [L711] SORT_14 var_137_arg_0 = input_15; [L712] SORT_14 var_137_arg_1 = var_136; [L713] SORT_1 var_137 = var_137_arg_0 == var_137_arg_1; [L714] SORT_14 var_135_arg_0 = input_15; [L715] SORT_14 var_135_arg_1 = var_134; [L716] SORT_1 var_135 = var_135_arg_0 == var_135_arg_1; [L717] SORT_14 var_133_arg_0 = input_15; [L718] SORT_14 var_133_arg_1 = var_132; [L719] SORT_1 var_133 = var_133_arg_0 == var_133_arg_1; [L720] SORT_14 var_131_arg_0 = input_15; [L721] SORT_14 var_131_arg_1 = var_130; [L722] SORT_1 var_131 = var_131_arg_0 == var_131_arg_1; [L723] SORT_14 var_129_arg_0 = input_15; [L724] SORT_14 var_129_arg_1 = var_128; [L725] SORT_1 var_129 = var_129_arg_0 == var_129_arg_1; [L726] SORT_14 var_127_arg_0 = input_15; [L727] SORT_14 var_127_arg_1 = var_126; [L728] SORT_1 var_127 = var_127_arg_0 == var_127_arg_1; [L729] SORT_14 var_125_arg_0 = input_15; [L730] SORT_14 var_125_arg_1 = var_124; [L731] SORT_1 var_125 = var_125_arg_0 == var_125_arg_1; [L732] SORT_14 var_123_arg_0 = input_15; [L733] SORT_14 var_123_arg_1 = var_122; [L734] SORT_1 var_123 = var_123_arg_0 == var_123_arg_1; [L735] SORT_14 var_121_arg_0 = input_15; [L736] SORT_14 var_121_arg_1 = var_120; [L737] SORT_1 var_121 = var_121_arg_0 == var_121_arg_1; [L738] SORT_14 var_119_arg_0 = input_15; [L739] SORT_14 var_119_arg_1 = var_118; [L740] SORT_1 var_119 = var_119_arg_0 == var_119_arg_1; [L741] SORT_1 var_142_arg_0 = var_121; [L742] SORT_1 var_142_arg_1 = var_119; [L743] SORT_6 var_142 = ((SORT_6)var_142_arg_0 << 1) | var_142_arg_1; [L744] var_142 = var_142 & mask_SORT_6 [L745] SORT_1 var_143_arg_0 = var_123; [L746] SORT_6 var_143_arg_1 = var_142; [L747] SORT_8 var_143 = ((SORT_8)var_143_arg_0 << 2) | var_143_arg_1; [L748] var_143 = var_143 & mask_SORT_8 [L749] SORT_1 var_144_arg_0 = var_125; [L750] SORT_8 var_144_arg_1 = var_143; [L751] SORT_106 var_144 = ((SORT_106)var_144_arg_0 << 3) | var_144_arg_1; [L752] var_144 = var_144 & mask_SORT_106 [L753] SORT_1 var_145_arg_0 = var_127; [L754] SORT_106 var_145_arg_1 = var_144; [L755] SORT_14 var_145 = ((SORT_14)var_145_arg_0 << 4) | var_145_arg_1; [L756] var_145 = var_145 & mask_SORT_14 [L757] SORT_1 var_147_arg_0 = var_129; [L758] SORT_14 var_147_arg_1 = var_145; [L759] SORT_146 var_147 = ((SORT_146)var_147_arg_0 << 5) | var_147_arg_1; [L760] var_147 = var_147 & mask_SORT_146 [L761] SORT_1 var_149_arg_0 = var_131; [L762] SORT_146 var_149_arg_1 = var_147; [L763] SORT_148 var_149 = ((SORT_148)var_149_arg_0 << 6) | var_149_arg_1; [L764] var_149 = var_149 & mask_SORT_148 [L765] SORT_1 var_150_arg_0 = var_133; [L766] SORT_148 var_150_arg_1 = var_149; [L767] SORT_17 var_150 = ((SORT_17)var_150_arg_0 << 7) | var_150_arg_1; [L768] var_150 = var_150 & mask_SORT_17 [L769] SORT_1 var_152_arg_0 = var_135; [L770] SORT_17 var_152_arg_1 = var_150; [L771] SORT_151 var_152 = ((SORT_151)var_152_arg_0 << 8) | var_152_arg_1; [L772] var_152 = var_152 & mask_SORT_151 [L773] SORT_1 var_154_arg_0 = var_137; [L774] SORT_151 var_154_arg_1 = var_152; [L775] SORT_153 var_154 = ((SORT_153)var_154_arg_0 << 9) | var_154_arg_1; [L776] var_154 = var_154 & mask_SORT_153 [L777] SORT_1 var_156_arg_0 = var_139; [L778] SORT_153 var_156_arg_1 = var_154; [L779] SORT_155 var_156 = ((SORT_155)var_156_arg_0 << 10) | var_156_arg_1; [L780] var_156 = var_156 & mask_SORT_155 [L781] SORT_1 var_158_arg_0 = var_141; [L782] SORT_155 var_158_arg_1 = var_156; [L783] SORT_157 var_158 = ((SORT_157)var_158_arg_0 << 11) | var_158_arg_1; [L784] var_158 = var_158 & mask_SORT_157 [L785] SORT_157 var_159_arg_0 = var_158; [L786] SORT_1 var_159 = var_159_arg_0 != 0; [L787] SORT_1 var_271_arg_0 = var_161; [L788] SORT_1 var_271_arg_1 = var_159; [L789] SORT_6 var_271 = ((SORT_6)var_271_arg_0 << 1) | var_271_arg_1; [L790] var_271 = var_271 & mask_SORT_6 [L791] SORT_1 var_272_arg_0 = var_270; [L792] SORT_6 var_272_arg_1 = var_271; [L793] SORT_8 var_272 = ((SORT_8)var_272_arg_0 << 2) | var_272_arg_1; [L794] var_272 = var_272 & mask_SORT_8 [L795] SORT_8 var_273_arg_0 = var_272; [L796] SORT_1 var_273 = var_273_arg_0 != 0; [L797] SORT_1 var_87_arg_0 = var_86; [L798] SORT_1 var_87 = ~var_87_arg_0; [L799] var_87 = var_87 & mask_SORT_1 [L800] SORT_1 var_88_arg_0 = input_13; [L801] SORT_1 var_88_arg_1 = var_87; [L802] SORT_6 var_88 = ((SORT_6)var_88_arg_0 << 1) | var_88_arg_1; [L803] var_88 = var_88 & mask_SORT_6 [L804] SORT_6 var_89_arg_0 = var_88; [L805] SORT_1 var_89 = var_89_arg_0 == mask_SORT_6; [L806] SORT_1 var_274_arg_0 = var_273; [L807] SORT_1 var_274_arg_1 = var_89; [L808] SORT_6 var_274 = ((SORT_6)var_274_arg_0 << 1) | var_274_arg_1; [L809] var_274 = var_274 & mask_SORT_6 [L810] SORT_1 var_275_arg_0 = var_83; [L811] SORT_6 var_275_arg_1 = var_274; [L812] SORT_8 var_275 = ((SORT_8)var_275_arg_0 << 2) | var_275_arg_1; [L813] var_275 = var_275 & mask_SORT_8 [L814] SORT_8 var_276_arg_0 = var_275; [L815] SORT_1 var_276 = var_276_arg_0 == mask_SORT_8; [L816] SORT_1 var_115_arg_0 = input_13; [L817] SORT_1 var_115 = ~var_115_arg_0; [L818] SORT_1 var_113_arg_0 = input_13; [L819] SORT_1 var_113_arg_1 = var_86; [L820] SORT_6 var_113 = ((SORT_6)var_113_arg_0 << 1) | var_113_arg_1; [L821] var_113 = var_113 & mask_SORT_6 [L822] SORT_6 var_114_arg_0 = var_113; [L823] SORT_1 var_114 = var_114_arg_0 == mask_SORT_6; [L824] SORT_1 var_116_arg_0 = var_115; [L825] SORT_1 var_116_arg_1 = var_114; [L826] SORT_6 var_116 = ((SORT_6)var_116_arg_0 << 1) | var_116_arg_1; [L827] var_116 = var_116 & mask_SORT_6 [L828] SORT_6 var_117_arg_0 = var_116; [L829] SORT_1 var_117 = var_117_arg_0 != 0; [L830] SORT_1 var_277_arg_0 = var_276; [L831] SORT_1 var_277_arg_1 = var_117; [L832] SORT_6 var_277 = ((SORT_6)var_277_arg_0 << 1) | var_277_arg_1; [L833] var_277 = var_277 & mask_SORT_6 [L834] SORT_6 var_278_arg_0 = var_277; [L835] SORT_1 var_278 = var_278_arg_0 != 0; [L836] SORT_14 var_103_arg_0 = input_15; [L837] SORT_14 var_103_arg_1 = var_102; [L838] SORT_1 var_103 = var_103_arg_0 == var_103_arg_1; [L839] SORT_14 var_101_arg_0 = input_15; [L840] SORT_14 var_101_arg_1 = var_100; [L841] SORT_1 var_101 = var_101_arg_0 == var_101_arg_1; [L842] SORT_14 var_99_arg_0 = input_15; [L843] SORT_14 var_99_arg_1 = var_98; [L844] SORT_1 var_99 = var_99_arg_0 == var_99_arg_1; [L845] SORT_14 var_97_arg_0 = input_15; [L846] SORT_14 var_97_arg_1 = var_96; [L847] SORT_1 var_97 = var_97_arg_0 == var_97_arg_1; [L848] SORT_1 var_104_arg_0 = var_99; [L849] SORT_1 var_104_arg_1 = var_97; [L850] SORT_6 var_104 = ((SORT_6)var_104_arg_0 << 1) | var_104_arg_1; [L851] var_104 = var_104 & mask_SORT_6 [L852] SORT_1 var_105_arg_0 = var_101; [L853] SORT_6 var_105_arg_1 = var_104; [L854] SORT_8 var_105 = ((SORT_8)var_105_arg_0 << 2) | var_105_arg_1; [L855] var_105 = var_105 & mask_SORT_8 [L856] SORT_1 var_107_arg_0 = var_103; [L857] SORT_8 var_107_arg_1 = var_105; [L858] SORT_106 var_107 = ((SORT_106)var_107_arg_0 << 3) | var_107_arg_1; [L859] var_107 = var_107 & mask_SORT_106 [L860] SORT_106 var_108_arg_0 = var_107; [L861] SORT_1 var_108 = var_108_arg_0 != 0; [L862] SORT_1 var_109_arg_0 = var_108; [L863] SORT_1 var_109_arg_1 = var_89; [L864] SORT_6 var_109 = ((SORT_6)var_109_arg_0 << 1) | var_109_arg_1; [L865] var_109 = var_109 & mask_SORT_6 [L866] SORT_1 var_110_arg_0 = var_83; [L867] SORT_6 var_110_arg_1 = var_109; [L868] SORT_8 var_110 = ((SORT_8)var_110_arg_0 << 2) | var_110_arg_1; [L869] var_110 = var_110 & mask_SORT_8 [L870] SORT_8 var_111_arg_0 = var_110; [L871] SORT_1 var_111 = var_111_arg_0 == mask_SORT_8; [L872] SORT_1 var_77_arg_0 = var_76; [L873] SORT_1 var_77 = ~var_77_arg_0; [L874] SORT_1 var_93_arg_0 = var_77; [L875] SORT_1 var_93_arg_1 = var_74; [L876] SORT_6 var_93 = ((SORT_6)var_93_arg_0 << 1) | var_93_arg_1; [L877] var_93 = var_93 & mask_SORT_6 [L878] SORT_6 var_94_arg_0 = var_93; [L879] SORT_1 var_94 = var_94_arg_0 == mask_SORT_6; [L880] SORT_1 var_95_arg_0 = var_94; [L881] SORT_1 var_95_arg_1 = var_76; [L882] SORT_6 var_95 = ((SORT_6)var_95_arg_0 << 1) | var_95_arg_1; [L883] SORT_1 var_84_arg_0 = var_83; [L884] SORT_1 var_84 = ~var_84_arg_0; [L885] var_84 = var_84 & mask_SORT_1 [L886] SORT_1 var_90_arg_0 = var_89; [L887] SORT_1 var_90_arg_1 = var_84; [L888] SORT_6 var_90 = ((SORT_6)var_90_arg_0 << 1) | var_90_arg_1; [L889] var_90 = var_90 & mask_SORT_6 [L890] SORT_6 var_91_arg_0 = var_90; [L891] SORT_1 var_91 = var_91_arg_0 == mask_SORT_6; [L892] SORT_1 var_78_arg_0 = var_74; [L893] SORT_1 var_78_arg_1 = var_72; [L894] SORT_6 var_78 = ((SORT_6)var_78_arg_0 << 1) | var_78_arg_1; [L895] var_78 = var_78 & mask_SORT_6 [L896] SORT_1 var_79_arg_0 = var_77; [L897] SORT_6 var_79_arg_1 = var_78; [L898] SORT_8 var_79 = ((SORT_8)var_79_arg_0 << 2) | var_79_arg_1; [L899] var_79 = var_79 & mask_SORT_8 [L900] SORT_8 var_80_arg_0 = var_79; [L901] SORT_1 var_80 = var_80_arg_0 == mask_SORT_8; [L902] SORT_1 var_81_arg_0 = var_80; [L903] SORT_1 var_81_arg_1 = var_28; [L904] SORT_6 var_81 = ((SORT_6)var_81_arg_0 << 1) | var_81_arg_1; [L905] SORT_1 var_92_arg_0 = var_91; [L906] SORT_6 var_92_arg_1 = var_81; [L907] SORT_6 var_92_arg_2 = var_38; [L908] EXPR var_92_arg_0 ? var_92_arg_1 : var_92_arg_2 [L908] SORT_6 var_92 = var_92_arg_0 ? var_92_arg_1 : var_92_arg_2; [L909] SORT_1 var_112_arg_0 = var_111; [L910] SORT_6 var_112_arg_1 = var_95; [L911] SORT_6 var_112_arg_2 = var_92; [L912] EXPR var_112_arg_0 ? var_112_arg_1 : var_112_arg_2 [L912] SORT_6 var_112 = var_112_arg_0 ? var_112_arg_1 : var_112_arg_2; [L913] SORT_1 var_279_arg_0 = var_278; [L914] SORT_6 var_279_arg_1 = var_38; [L915] SORT_6 var_279_arg_2 = var_112; [L916] EXPR var_279_arg_0 ? var_279_arg_1 : var_279_arg_2 [L916] SORT_6 var_279 = var_279_arg_0 ? var_279_arg_1 : var_279_arg_2; [L917] var_279 = var_279 & mask_SORT_6 [L918] SORT_146 var_281_arg_0 = var_280; [L919] SORT_6 var_281_arg_1 = var_279; [L920] SORT_17 var_281 = ((SORT_17)var_281_arg_0 << 2) | var_281_arg_1; [L921] SORT_1 var_37_arg_0 = state_35; [L922] SORT_17 var_37_arg_1 = state_33; [L923] SORT_17 var_37_arg_2 = input_18; [L924] EXPR var_37_arg_0 ? var_37_arg_1 : var_37_arg_2 [L924] SORT_17 var_37 = var_37_arg_0 ? var_37_arg_1 : var_37_arg_2; [L925] SORT_1 var_43_arg_0 = var_42; [L926] SORT_17 var_43_arg_1 = var_37; [L927] SORT_17 var_43_arg_2 = var_32; [L928] EXPR var_43_arg_0 ? var_43_arg_1 : var_43_arg_2 [L928] SORT_17 var_43 = var_43_arg_0 ? var_43_arg_1 : var_43_arg_2; [L929] SORT_1 var_45_arg_0 = var_44; [L930] SORT_17 var_45_arg_1 = var_32; [L931] SORT_17 var_45_arg_2 = var_43; [L932] EXPR var_45_arg_0 ? var_45_arg_1 : var_45_arg_2 [L932] SORT_17 var_45 = var_45_arg_0 ? var_45_arg_1 : var_45_arg_2; [L933] SORT_1 var_299_arg_0 = var_298; [L934] SORT_17 var_299_arg_1 = var_281; [L935] SORT_17 var_299_arg_2 = var_45; [L936] EXPR var_299_arg_0 ? var_299_arg_1 : var_299_arg_2 [L936] SORT_17 var_299 = var_299_arg_0 ? var_299_arg_1 : var_299_arg_2; [L937] var_299 = var_299 & mask_SORT_17 [L938] SORT_1 var_345_arg_0 = var_84; [L939] SORT_1 var_345_arg_1 = var_89; [L940] SORT_6 var_345 = ((SORT_6)var_345_arg_0 << 1) | var_345_arg_1; [L941] var_345 = var_345 & mask_SORT_6 [L942] SORT_1 var_346_arg_0 = var_76; [L943] SORT_6 var_346_arg_1 = var_345; [L944] SORT_8 var_346 = ((SORT_8)var_346_arg_0 << 2) | var_346_arg_1; [L945] var_346 = var_346 & mask_SORT_8 [L946] SORT_1 var_347_arg_0 = var_292; [L947] SORT_8 var_347_arg_1 = var_346; [L948] SORT_106 var_347 = ((SORT_106)var_347_arg_0 << 3) | var_347_arg_1; [L949] var_347 = var_347 & mask_SORT_106 [L950] SORT_106 var_348_arg_0 = var_347; [L951] SORT_1 var_348 = var_348_arg_0 == mask_SORT_106; [L952] SORT_1 var_314_arg_0 = var_72; [L953] SORT_1 var_314_arg_1 = var_89; [L954] SORT_6 var_314 = ((SORT_6)var_314_arg_0 << 1) | var_314_arg_1; [L955] var_314 = var_314 & mask_SORT_6 [L956] SORT_1 var_315_arg_0 = var_84; [L957] SORT_6 var_315_arg_1 = var_314; [L958] SORT_8 var_315 = ((SORT_8)var_315_arg_0 << 2) | var_315_arg_1; [L959] var_315 = var_315 & mask_SORT_8 [L960] SORT_8 var_316_arg_0 = var_315; [L961] SORT_1 var_316 = var_316_arg_0 == mask_SORT_8; [L962] SORT_1 var_342_arg_0 = var_74; [L963] SORT_1 var_342_arg_1 = var_316; [L964] SORT_6 var_342 = ((SORT_6)var_342_arg_0 << 1) | var_342_arg_1; [L965] var_342 = var_342 & mask_SORT_6 [L966] SORT_1 var_343_arg_0 = var_77; [L967] SORT_6 var_343_arg_1 = var_342; [L968] SORT_8 var_343 = ((SORT_8)var_343_arg_0 << 2) | var_343_arg_1; [L969] var_343 = var_343 & mask_SORT_8 [L970] SORT_8 var_344_arg_0 = var_343; [L971] SORT_1 var_344 = var_344_arg_0 == mask_SORT_8; [L972] SORT_1 var_340_arg_0 = var_276; [L973] SORT_1 var_340_arg_1 = var_161; [L974] SORT_6 var_340 = ((SORT_6)var_340_arg_0 << 1) | var_340_arg_1; [L975] var_340 = var_340 & mask_SORT_6 [L976] SORT_6 var_341_arg_0 = var_340; [L977] SORT_1 var_341 = var_341_arg_0 == mask_SORT_6; [L978] SORT_1 var_349_arg_0 = var_344; [L979] SORT_1 var_349_arg_1 = var_341; [L980] SORT_6 var_349 = ((SORT_6)var_349_arg_0 << 1) | var_349_arg_1; [L981] var_349 = var_349 & mask_SORT_6 [L982] SORT_1 var_350_arg_0 = var_114; [L983] SORT_6 var_350_arg_1 = var_349; [L984] SORT_8 var_350 = ((SORT_8)var_350_arg_0 << 2) | var_350_arg_1; [L985] var_350 = var_350 & mask_SORT_8 [L986] SORT_1 var_351_arg_0 = var_348; [L987] SORT_8 var_351_arg_1 = var_350; [L988] SORT_106 var_351 = ((SORT_106)var_351_arg_0 << 3) | var_351_arg_1; [L989] var_351 = var_351 & mask_SORT_106 [L990] SORT_106 var_352_arg_0 = var_351; [L991] SORT_1 var_352 = var_352_arg_0 != 0; [L992] SORT_1 var_332_arg_0 = var_84; [L993] SORT_1 var_332_arg_1 = var_89; [L994] SORT_6 var_332 = ((SORT_6)var_332_arg_0 << 1) | var_332_arg_1; [L995] var_332 = var_332 & mask_SORT_6 [L996] SORT_1 var_333_arg_0 = var_77; [L997] SORT_6 var_333_arg_1 = var_332; [L998] SORT_8 var_333 = ((SORT_8)var_333_arg_0 << 2) | var_333_arg_1; [L999] var_333 = var_333 & mask_SORT_8 [L1000] SORT_1 var_334_arg_0 = var_292; [L1001] SORT_8 var_334_arg_1 = var_333; [L1002] SORT_106 var_334 = ((SORT_106)var_334_arg_0 << 3) | var_334_arg_1; [L1003] var_334 = var_334 & mask_SORT_106 [L1004] SORT_106 var_335_arg_0 = var_334; [L1005] SORT_1 var_335 = var_335_arg_0 == mask_SORT_106; [L1006] SORT_1 var_328_arg_0 = var_74; [L1007] SORT_1 var_328 = ~var_328_arg_0; [L1008] SORT_1 var_329_arg_0 = var_328; [L1009] SORT_1 var_329_arg_1 = var_316; [L1010] SORT_6 var_329 = ((SORT_6)var_329_arg_0 << 1) | var_329_arg_1; [L1011] var_329 = var_329 & mask_SORT_6 [L1012] SORT_1 var_330_arg_0 = var_77; [L1013] SORT_6 var_330_arg_1 = var_329; [L1014] SORT_8 var_330 = ((SORT_8)var_330_arg_0 << 2) | var_330_arg_1; [L1015] var_330 = var_330 & mask_SORT_8 [L1016] SORT_8 var_331_arg_0 = var_330; [L1017] SORT_1 var_331 = var_331_arg_0 == mask_SORT_8; [L1018] SORT_1 var_336_arg_0 = var_115; [L1019] SORT_1 var_336_arg_1 = var_331; [L1020] SORT_6 var_336 = ((SORT_6)var_336_arg_0 << 1) | var_336_arg_1; [L1021] var_336 = var_336 & mask_SORT_6 [L1022] SORT_1 var_337_arg_0 = var_335; [L1023] SORT_6 var_337_arg_1 = var_336; [L1024] SORT_8 var_337 = ((SORT_8)var_337_arg_0 << 2) | var_337_arg_1; [L1025] var_337 = var_337 & mask_SORT_8 [L1026] SORT_8 var_338_arg_0 = var_337; [L1027] SORT_1 var_338 = var_338_arg_0 != 0; [L1028] SORT_1 var_325_arg_0 = state_35; [L1029] SORT_6 var_325_arg_1 = state_323; [L1030] SORT_6 var_325_arg_2 = input_16; [L1031] EXPR var_325_arg_0 ? var_325_arg_1 : var_325_arg_2 [L1031] SORT_6 var_325 = var_325_arg_0 ? var_325_arg_1 : var_325_arg_2; [L1032] SORT_1 var_326_arg_0 = var_42; [L1033] SORT_6 var_326_arg_1 = var_325; [L1034] SORT_6 var_326_arg_2 = var_38; [L1035] EXPR var_326_arg_0 ? var_326_arg_1 : var_326_arg_2 [L1035] SORT_6 var_326 = var_326_arg_0 ? var_326_arg_1 : var_326_arg_2; [L1036] SORT_1 var_327_arg_0 = var_44; [L1037] SORT_6 var_327_arg_1 = var_38; [L1038] SORT_6 var_327_arg_2 = var_326; [L1039] EXPR var_327_arg_0 ? var_327_arg_1 : var_327_arg_2 [L1039] SORT_6 var_327 = var_327_arg_0 ? var_327_arg_1 : var_327_arg_2; [L1040] SORT_1 var_317_arg_0 = var_316; [L1041] SORT_1 var_317_arg_1 = var_76; [L1042] SORT_6 var_317 = ((SORT_6)var_317_arg_0 << 1) | var_317_arg_1; [L1043] var_317 = var_317 & mask_SORT_6 [L1044] SORT_6 var_318_arg_0 = var_317; [L1045] SORT_1 var_318 = var_318_arg_0 == mask_SORT_6; [L1046] SORT_1 var_310_arg_0 = var_83; [L1047] SORT_1 var_310_arg_1 = var_89; [L1048] SORT_6 var_310 = ((SORT_6)var_310_arg_0 << 1) | var_310_arg_1; [L1049] var_310 = var_310 & mask_SORT_6 [L1050] SORT_1 var_311_arg_0 = var_76; [L1051] SORT_6 var_311_arg_1 = var_310; [L1052] SORT_8 var_311 = ((SORT_8)var_311_arg_0 << 2) | var_311_arg_1; [L1053] var_311 = var_311 & mask_SORT_8 [L1054] SORT_1 var_312_arg_0 = var_108; [L1055] SORT_8 var_312_arg_1 = var_311; [L1056] SORT_106 var_312 = ((SORT_106)var_312_arg_0 << 3) | var_312_arg_1; [L1057] var_312 = var_312 & mask_SORT_106 [L1058] SORT_106 var_313_arg_0 = var_312; [L1059] SORT_1 var_313 = var_313_arg_0 == mask_SORT_106; [L1060] SORT_1 var_308_arg_0 = var_276; [L1061] SORT_1 var_308_arg_1 = var_159; [L1062] SORT_6 var_308 = ((SORT_6)var_308_arg_0 << 1) | var_308_arg_1; [L1063] var_308 = var_308 & mask_SORT_6 [L1064] SORT_6 var_309_arg_0 = var_308; [L1065] SORT_1 var_309 = var_309_arg_0 == mask_SORT_6; [L1066] SORT_1 var_319_arg_0 = var_313; [L1067] SORT_1 var_319_arg_1 = var_309; [L1068] SORT_6 var_319 = ((SORT_6)var_319_arg_0 << 1) | var_319_arg_1; [L1069] var_319 = var_319 & mask_SORT_6 [L1070] SORT_1 var_320_arg_0 = var_318; [L1071] SORT_6 var_320_arg_1 = var_319; [L1072] SORT_8 var_320 = ((SORT_8)var_320_arg_0 << 2) | var_320_arg_1; [L1073] var_320 = var_320 & mask_SORT_8 [L1074] SORT_8 var_321_arg_0 = var_320; [L1075] SORT_1 var_321 = var_321_arg_0 != 0; [L1076] SORT_1 var_303_arg_0 = var_83; [L1077] SORT_1 var_303_arg_1 = var_89; [L1078] SORT_6 var_303 = ((SORT_6)var_303_arg_0 << 1) | var_303_arg_1; [L1079] var_303 = var_303 & mask_SORT_6 [L1080] SORT_1 var_304_arg_0 = var_77; [L1081] SORT_6 var_304_arg_1 = var_303; [L1082] SORT_8 var_304 = ((SORT_8)var_304_arg_0 << 2) | var_304_arg_1; [L1083] var_304 = var_304 & mask_SORT_8 [L1084] SORT_1 var_305_arg_0 = var_108; [L1085] SORT_8 var_305_arg_1 = var_304; [L1086] SORT_106 var_305 = ((SORT_106)var_305_arg_0 << 3) | var_305_arg_1; [L1087] var_305 = var_305 & mask_SORT_106 [L1088] SORT_106 var_306_arg_0 = var_305; [L1089] SORT_1 var_306 = var_306_arg_0 == mask_SORT_106; [L1090] SORT_1 var_302_arg_0 = var_74; [L1091] SORT_1 var_302_arg_1 = var_74; [L1092] SORT_6 var_302 = ((SORT_6)var_302_arg_0 << 1) | var_302_arg_1; [L1093] SORT_1 var_307_arg_0 = var_306; [L1094] SORT_6 var_307_arg_1 = var_302; [L1095] SORT_6 var_307_arg_2 = var_38; [L1096] EXPR var_307_arg_0 ? var_307_arg_1 : var_307_arg_2 [L1096] SORT_6 var_307 = var_307_arg_0 ? var_307_arg_1 : var_307_arg_2; [L1097] SORT_1 var_322_arg_0 = var_321; [L1098] SORT_6 var_322_arg_1 = var_75; [L1099] SORT_6 var_322_arg_2 = var_307; [L1100] EXPR var_322_arg_0 ? var_322_arg_1 : var_322_arg_2 [L1100] SORT_6 var_322 = var_322_arg_0 ? var_322_arg_1 : var_322_arg_2; [L1101] SORT_1 var_339_arg_0 = var_338; [L1102] SORT_6 var_339_arg_1 = var_327; [L1103] SORT_6 var_339_arg_2 = var_322; [L1104] EXPR var_339_arg_0 ? var_339_arg_1 : var_339_arg_2 [L1104] SORT_6 var_339 = var_339_arg_0 ? var_339_arg_1 : var_339_arg_2; [L1105] SORT_1 var_353_arg_0 = var_352; [L1106] SORT_6 var_353_arg_1 = var_85; [L1107] SORT_6 var_353_arg_2 = var_339; [L1108] EXPR var_353_arg_0 ? var_353_arg_1 : var_353_arg_2 [L1108] SORT_6 var_353 = var_353_arg_0 ? var_353_arg_1 : var_353_arg_2; [L1109] var_353 = var_353 & mask_SORT_6 [L1110] SORT_146 var_354_arg_0 = var_280; [L1111] SORT_6 var_354_arg_1 = var_353; [L1112] SORT_17 var_354 = ((SORT_17)var_354_arg_0 << 2) | var_354_arg_1; [L1113] var_354 = var_354 & mask_SORT_17 [L1114] SORT_17 var_355_arg_0 = var_299; [L1115] SORT_17 var_355_arg_1 = var_354; [L1116] SORT_1 var_355 = var_355_arg_0 == var_355_arg_1; [L1117] SORT_1 var_356_arg_0 = var_355; [L1118] SORT_1 var_356 = ~var_356_arg_0; [L1119] var_356 = var_356 & mask_SORT_1 [L1120] SORT_1 var_364_arg_0 = var_363; [L1121] SORT_1 var_364_arg_1 = var_356; [L1122] SORT_6 var_364 = ((SORT_6)var_364_arg_0 << 1) | var_364_arg_1; [L1123] var_364 = var_364 & mask_SORT_6 [L1124] SORT_6 var_365_arg_0 = var_364; [L1125] SORT_1 var_365 = var_365_arg_0 == mask_SORT_6; [L1126] SORT_1 var_367_arg_0 = var_366; [L1127] SORT_1 var_367_arg_1 = var_365; [L1128] SORT_6 var_367 = ((SORT_6)var_367_arg_0 << 1) | var_367_arg_1; [L1129] var_367 = var_367 & mask_SORT_6 [L1130] SORT_6 var_368_arg_0 = var_367; [L1131] SORT_1 var_368 = var_368_arg_0 == mask_SORT_6; [L1132] SORT_17 var_301_arg_0 = var_299; [L1133] SORT_17 var_301_arg_1 = var_300; [L1134] SORT_1 var_301 = var_301_arg_0 == var_301_arg_1; [L1135] SORT_1 var_369_arg_0 = var_368; [L1136] SORT_1 var_369_arg_1 = var_301; [L1137] SORT_6 var_369 = ((SORT_6)var_369_arg_0 << 1) | var_369_arg_1; [L1138] var_369 = var_369 & mask_SORT_6 [L1139] SORT_6 var_370_arg_0 = var_369; [L1140] SORT_1 var_370 = var_370_arg_0 == mask_SORT_6; [L1141] SORT_1 var_371_arg_0 = var_370; [L1142] SORT_1 var_371_arg_1 = input_5; [L1143] SORT_6 var_371 = ((SORT_6)var_371_arg_0 << 1) | var_371_arg_1; [L1144] var_371 = var_371 & mask_SORT_6 [L1145] SORT_6 var_372_arg_0 = var_371; [L1146] SORT_1 var_372 = var_372_arg_0 != 0; [L1147] SORT_1 var_375_arg_0 = state_35; [L1148] SORT_17 var_375_arg_1 = state_373; [L1149] SORT_17 var_375_arg_2 = input_18; [L1150] EXPR var_375_arg_0 ? var_375_arg_1 : var_375_arg_2 [L1150] SORT_17 var_375 = var_375_arg_0 ? var_375_arg_1 : var_375_arg_2; [L1151] SORT_1 var_376_arg_0 = var_42; [L1152] SORT_17 var_376_arg_1 = var_375; [L1153] SORT_17 var_376_arg_2 = var_32; [L1154] EXPR var_376_arg_0 ? var_376_arg_1 : var_376_arg_2 [L1154] SORT_17 var_376 = var_376_arg_0 ? var_376_arg_1 : var_376_arg_2; [L1155] SORT_1 var_377_arg_0 = var_44; [L1156] SORT_17 var_377_arg_1 = var_32; [L1157] SORT_17 var_377_arg_2 = var_376; [L1158] EXPR var_377_arg_0 ? var_377_arg_1 : var_377_arg_2 [L1158] SORT_17 var_377 = var_377_arg_0 ? var_377_arg_1 : var_377_arg_2; [L1159] SORT_1 var_378_arg_0 = var_298; [L1160] SORT_17 var_378_arg_1 = var_281; [L1161] SORT_17 var_378_arg_2 = var_377; [L1162] EXPR var_378_arg_0 ? var_378_arg_1 : var_378_arg_2 [L1162] SORT_17 var_378 = var_378_arg_0 ? var_378_arg_1 : var_378_arg_2; [L1163] var_378 = var_378 & mask_SORT_17 [L1164] SORT_1 var_382_arg_0 = state_35; [L1165] SORT_6 var_382_arg_1 = state_380; [L1166] SORT_6 var_382_arg_2 = input_16; [L1167] EXPR var_382_arg_0 ? var_382_arg_1 : var_382_arg_2 [L1167] SORT_6 var_382 = var_382_arg_0 ? var_382_arg_1 : var_382_arg_2; [L1168] SORT_1 var_383_arg_0 = var_42; [L1169] SORT_6 var_383_arg_1 = var_382; [L1170] SORT_6 var_383_arg_2 = var_38; [L1171] EXPR var_383_arg_0 ? var_383_arg_1 : var_383_arg_2 [L1171] SORT_6 var_383 = var_383_arg_0 ? var_383_arg_1 : var_383_arg_2; [L1172] SORT_1 var_384_arg_0 = var_44; [L1173] SORT_6 var_384_arg_1 = var_38; [L1174] SORT_6 var_384_arg_2 = var_383; [L1175] EXPR var_384_arg_0 ? var_384_arg_1 : var_384_arg_2 [L1175] SORT_6 var_384 = var_384_arg_0 ? var_384_arg_1 : var_384_arg_2; [L1176] SORT_1 var_385_arg_0 = var_338; [L1177] SORT_6 var_385_arg_1 = var_384; [L1178] SORT_6 var_385_arg_2 = var_322; [L1179] EXPR var_385_arg_0 ? var_385_arg_1 : var_385_arg_2 [L1179] SORT_6 var_385 = var_385_arg_0 ? var_385_arg_1 : var_385_arg_2; [L1180] SORT_1 var_386_arg_0 = var_352; [L1181] SORT_6 var_386_arg_1 = var_85; [L1182] SORT_6 var_386_arg_2 = var_385; [L1183] EXPR var_386_arg_0 ? var_386_arg_1 : var_386_arg_2 [L1183] SORT_6 var_386 = var_386_arg_0 ? var_386_arg_1 : var_386_arg_2; [L1184] var_386 = var_386 & mask_SORT_6 [L1185] SORT_146 var_387_arg_0 = var_280; [L1186] SORT_6 var_387_arg_1 = var_386; [L1187] SORT_17 var_387 = ((SORT_17)var_387_arg_0 << 2) | var_387_arg_1; [L1188] var_387 = var_387 & mask_SORT_17 [L1189] SORT_17 var_388_arg_0 = var_378; [L1190] SORT_17 var_388_arg_1 = var_387; [L1191] SORT_1 var_388 = var_388_arg_0 == var_388_arg_1; [L1192] SORT_1 var_389_arg_0 = var_388; [L1193] SORT_1 var_389 = ~var_389_arg_0; [L1194] var_389 = var_389 & mask_SORT_1 [L1195] SORT_1 var_390_arg_0 = var_363; [L1196] SORT_1 var_390_arg_1 = var_389; [L1197] SORT_6 var_390 = ((SORT_6)var_390_arg_0 << 1) | var_390_arg_1; [L1198] var_390 = var_390 & mask_SORT_6 [L1199] SORT_6 var_391_arg_0 = var_390; [L1200] SORT_1 var_391 = var_391_arg_0 == mask_SORT_6; [L1201] SORT_1 var_392_arg_0 = var_366; [L1202] SORT_1 var_392_arg_1 = var_391; [L1203] SORT_6 var_392 = ((SORT_6)var_392_arg_0 << 1) | var_392_arg_1; [L1204] var_392 = var_392 & mask_SORT_6 [L1205] SORT_6 var_393_arg_0 = var_392; [L1206] SORT_1 var_393 = var_393_arg_0 == mask_SORT_6; [L1207] SORT_17 var_379_arg_0 = var_378; [L1208] SORT_17 var_379_arg_1 = var_300; [L1209] SORT_1 var_379 = var_379_arg_0 == var_379_arg_1; [L1210] SORT_1 var_394_arg_0 = var_393; [L1211] SORT_1 var_394_arg_1 = var_379; [L1212] SORT_6 var_394 = ((SORT_6)var_394_arg_0 << 1) | var_394_arg_1; [L1213] var_394 = var_394 & mask_SORT_6 [L1214] SORT_6 var_395_arg_0 = var_394; [L1215] SORT_1 var_395 = var_395_arg_0 == mask_SORT_6; [L1216] SORT_1 var_396_arg_0 = var_395; [L1217] SORT_1 var_396_arg_1 = input_5; [L1218] SORT_6 var_396 = ((SORT_6)var_396_arg_0 << 1) | var_396_arg_1; [L1219] var_396 = var_396 & mask_SORT_6 [L1220] SORT_6 var_397_arg_0 = var_396; [L1221] SORT_1 var_397 = var_397_arg_0 != 0; [L1222] SORT_1 var_398_arg_0 = var_372; [L1223] SORT_1 var_398_arg_1 = var_397; [L1224] SORT_1 var_398 = var_398_arg_0 == var_398_arg_1; [L1225] SORT_1 var_399_arg_0 = var_31; [L1226] SORT_1 var_399_arg_1 = var_398; [L1227] SORT_1 var_399 = var_399_arg_0 | var_399_arg_1; [L1228] SORT_1 var_402_arg_0 = var_399; [L1229] SORT_1 var_402 = ~var_402_arg_0; [L1230] SORT_1 var_403_arg_0 = var_46; [L1231] SORT_1 var_403_arg_1 = var_402; [L1232] SORT_1 var_403 = var_403_arg_0 & var_403_arg_1; [L1233] var_403 = var_403 & mask_SORT_1 [L1234] SORT_1 bad_404_arg_0 = var_403; [L1235] CALL __VERIFIER_assert(!(bad_404_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: 147.1s, 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, 84.8s 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 03:52:51,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/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_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal21.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/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_b19de2a3-c333-4338-bf75-8af5c2bfcede/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 c04374ca4e7d3fdccf4ada1f22a04670bb7779c5a6ce431d27b2f71f31be3bbf --- 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 03:52:54,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:52:54,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:52:54,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:52:54,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:52:54,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:52:54,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:52:54,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:52:54,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:52:54,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:52:54,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:52:54,581 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:52:54,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:52:54,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:52:54,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:52:54,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:52:54,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:52:54,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:52:54,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:52:54,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:52:54,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:52:54,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:52:54,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:52:54,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:52:54,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:52:54,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:52:54,611 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:52:54,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:52:54,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:52:54,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:52:54,614 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:52:54,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:52:54,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:52:54,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:52:54,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:52:54,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:52:54,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:52:54,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:52:54,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:52:54,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:52:54,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:52:54,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 03:52:54,681 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:52:54,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:52:54,683 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:52:54,684 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:52:54,685 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:52:54,685 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:52:54,686 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:52:54,686 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:52:54,686 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:52:54,686 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:52:54,688 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:52:54,688 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:52:54,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:52:54,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:52:54,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:52:54,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:52:54,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:52:54,691 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 03:52:54,691 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 03:52:54,691 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 03:52:54,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:52:54,692 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:52:54,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:52:54,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:52:54,693 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 03:52:54,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:52:54,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:52:54,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:52:54,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:52:54,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:52:54,694 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 03:52:54,695 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 03:52:54,695 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:52:54,696 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:52:54,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 03:52:54,696 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_b19de2a3-c333-4338-bf75-8af5c2bfcede/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c04374ca4e7d3fdccf4ada1f22a04670bb7779c5a6ce431d27b2f71f31be3bbf [2022-11-03 03:52:55,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:52:55,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:52:55,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:52:55,148 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:52:55,149 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:52:55,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal21.c [2022-11-03 03:52:55,245 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/data/41f152e35/b932ab37caa644a3bd58a879a036c670/FLAG8c4cf99bc [2022-11-03 03:52:56,023 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:52:56,024 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal21.c [2022-11-03 03:52:56,061 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/data/41f152e35/b932ab37caa644a3bd58a879a036c670/FLAG8c4cf99bc [2022-11-03 03:52:56,228 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/data/41f152e35/b932ab37caa644a3bd58a879a036c670 [2022-11-03 03:52:56,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:52:56,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:52:56,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:52:56,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:52:56,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:52:56,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:56" (1/1) ... [2022-11-03 03:52:56,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b498534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:56, skipping insertion in model container [2022-11-03 03:52:56,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:52:56" (1/1) ... [2022-11-03 03:52:56,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:52:56,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:52:56,515 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_b19de2a3-c333-4338-bf75-8af5c2bfcede/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal21.c[1107,1120] [2022-11-03 03:52:56,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:52:56,967 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:52:56,981 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_b19de2a3-c333-4338-bf75-8af5c2bfcede/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal21.c[1107,1120] [2022-11-03 03:52:57,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:52:57,220 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:52:57,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:57 WrapperNode [2022-11-03 03:52:57,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:52:57,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:52:57,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:52:57,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:52:57,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:57" (1/1) ... [2022-11-03 03:52:57,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:57" (1/1) ... [2022-11-03 03:52:57,409 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1946 [2022-11-03 03:52:57,409 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:52:57,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:52:57,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:52:57,410 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:52:57,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:57" (1/1) ... [2022-11-03 03:52:57,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:57" (1/1) ... [2022-11-03 03:52:57,432 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:57" (1/1) ... [2022-11-03 03:52:57,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:57" (1/1) ... [2022-11-03 03:52:57,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:57" (1/1) ... [2022-11-03 03:52:57,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:57" (1/1) ... [2022-11-03 03:52:57,527 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:57" (1/1) ... [2022-11-03 03:52:57,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:57" (1/1) ... [2022-11-03 03:52:57,560 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:52:57,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:52:57,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:52:57,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:52:57,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:57" (1/1) ... [2022-11-03 03:52:57,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:52:57,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:52:57,637 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:52:57,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:52:57,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:52:57,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:52:58,339 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:52:58,341 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:53:00,189 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:53:00,206 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:53:00,206 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:53:00,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:53:00 BoogieIcfgContainer [2022-11-03 03:53:00,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:53:00,213 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:53:00,213 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:53:00,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:53:00,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:52:56" (1/3) ... [2022-11-03 03:53:00,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd8f409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:53:00, skipping insertion in model container [2022-11-03 03:53:00,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:52:57" (2/3) ... [2022-11-03 03:53:00,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd8f409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:53:00, skipping insertion in model container [2022-11-03 03:53:00,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:53:00" (3/3) ... [2022-11-03 03:53:00,219 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal21.c [2022-11-03 03:53:00,241 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:53:00,242 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:53:00,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:53:00,359 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;@3a501448, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:53:00,359 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:53:00,367 INFO L276 IsEmpty]: Start isEmpty. Operand has 233 states, 231 states have (on average 1.4978354978354977) internal successors, (346), 232 states have internal predecessors, (346), 0 states have call successors, (0), 0 states 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 03:53:00,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:00,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:00,386 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, 1, 1, 1, 1, 1, 1, 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 03:53:00,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:00,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:00,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1559164005, now seen corresponding path program 1 times [2022-11-03 03:53:00,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:00,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457682322] [2022-11-03 03:53:00,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:00,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:00,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:00,413 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:00,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 03:53:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:01,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:53:01,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:01,783 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 03:53:01,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:01,785 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:01,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457682322] [2022-11-03 03:53:01,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457682322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:01,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:01,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:01,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165371439] [2022-11-03 03:53:01,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:01,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:53:01,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:01,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:53:01,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:01,845 INFO L87 Difference]: Start difference. First operand has 233 states, 231 states have (on average 1.4978354978354977) internal successors, (346), 232 states have internal predecessors, (346), 0 states have call successors, (0), 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 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:02,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:02,238 INFO L93 Difference]: Finished difference Result 914 states and 1369 transitions. [2022-11-03 03:53:02,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:53:02,242 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:02,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:02,259 INFO L225 Difference]: With dead ends: 914 [2022-11-03 03:53:02,259 INFO L226 Difference]: Without dead ends: 683 [2022-11-03 03:53:02,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 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 03:53:02,268 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 2344 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2344 SdHoareTripleChecker+Valid, 1337 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 03:53:02,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2344 Valid, 1337 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:02,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-11-03 03:53:02,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 231. [2022-11-03 03:53:02,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.4869565217391305) internal successors, (342), 230 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 03:53:02,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 342 transitions. [2022-11-03 03:53:02,333 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 342 transitions. Word has length 139 [2022-11-03 03:53:02,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:02,334 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 342 transitions. [2022-11-03 03:53:02,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:02,335 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 342 transitions. [2022-11-03 03:53:02,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:02,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:02,340 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, 1, 1, 1, 1, 1, 1, 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 03:53:02,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-03 03:53:02,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:02,563 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:02,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:02,564 INFO L85 PathProgramCache]: Analyzing trace with hash -58276445, now seen corresponding path program 1 times [2022-11-03 03:53:02,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:02,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2141027935] [2022-11-03 03:53:02,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:02,567 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:02,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:02,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:02,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 03:53:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:03,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:53:03,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:03,614 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 03:53:03,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:03,614 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:03,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2141027935] [2022-11-03 03:53:03,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2141027935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:03,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:03,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:03,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736868327] [2022-11-03 03:53:03,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:03,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:53:03,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:03,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:53:03,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:03,625 INFO L87 Difference]: Start difference. First operand 231 states and 342 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:03,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:03,870 INFO L93 Difference]: Finished difference Result 916 states and 1358 transitions. [2022-11-03 03:53:03,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:53:03,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:03,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:03,875 INFO L225 Difference]: With dead ends: 916 [2022-11-03 03:53:03,875 INFO L226 Difference]: Without dead ends: 687 [2022-11-03 03:53:03,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 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 03:53:03,881 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 2336 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2336 SdHoareTripleChecker+Valid, 1339 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 03:53:03,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2336 Valid, 1339 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:03,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-11-03 03:53:03,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 235. [2022-11-03 03:53:03,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 1.482905982905983) internal successors, (347), 234 states have internal predecessors, (347), 0 states have call successors, (0), 0 states 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 03:53:03,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 347 transitions. [2022-11-03 03:53:03,916 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 347 transitions. Word has length 139 [2022-11-03 03:53:03,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:03,917 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 347 transitions. [2022-11-03 03:53:03,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:03,917 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 347 transitions. [2022-11-03 03:53:03,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:03,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:03,921 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, 1, 1, 1, 1, 1, 1, 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 03:53:03,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:04,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:04,122 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:04,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:04,123 INFO L85 PathProgramCache]: Analyzing trace with hash 616883681, now seen corresponding path program 1 times [2022-11-03 03:53:04,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:04,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420283709] [2022-11-03 03:53:04,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:04,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:04,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:04,126 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:04,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 03:53:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:04,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:53:04,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:05,033 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 03:53:05,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:05,034 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:05,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420283709] [2022-11-03 03:53:05,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420283709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:05,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:05,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:05,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986108290] [2022-11-03 03:53:05,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:05,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:53:05,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:05,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:53:05,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:05,038 INFO L87 Difference]: Start difference. First operand 235 states and 347 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:05,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:05,257 INFO L93 Difference]: Finished difference Result 922 states and 1364 transitions. [2022-11-03 03:53:05,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:53:05,258 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:05,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:05,261 INFO L225 Difference]: With dead ends: 922 [2022-11-03 03:53:05,261 INFO L226 Difference]: Without dead ends: 689 [2022-11-03 03:53:05,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 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 03:53:05,263 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 2330 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2330 SdHoareTripleChecker+Valid, 1341 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 03:53:05,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2330 Valid, 1341 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:05,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-11-03 03:53:05,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 237. [2022-11-03 03:53:05,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.478813559322034) internal successors, (349), 236 states have internal predecessors, (349), 0 states have call successors, (0), 0 states 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 03:53:05,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 349 transitions. [2022-11-03 03:53:05,278 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 349 transitions. Word has length 139 [2022-11-03 03:53:05,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:05,278 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 349 transitions. [2022-11-03 03:53:05,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:05,279 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 349 transitions. [2022-11-03 03:53:05,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:05,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:05,282 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, 1, 1, 1, 1, 1, 1, 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 03:53:05,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:05,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:05,502 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:05,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:05,502 INFO L85 PathProgramCache]: Analyzing trace with hash 32112031, now seen corresponding path program 1 times [2022-11-03 03:53:05,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:05,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986042398] [2022-11-03 03:53:05,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:05,504 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:05,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:05,505 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:05,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 03:53:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:06,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 03:53:06,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:06,428 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 03:53:06,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:06,429 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:06,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986042398] [2022-11-03 03:53:06,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1986042398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:06,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:06,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:53:06,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871262397] [2022-11-03 03:53:06,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:06,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:53:06,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:06,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:53:06,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:06,432 INFO L87 Difference]: Start difference. First operand 237 states and 349 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:07,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:07,111 INFO L93 Difference]: Finished difference Result 937 states and 1382 transitions. [2022-11-03 03:53:07,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 03:53:07,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:07,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:07,115 INFO L225 Difference]: With dead ends: 937 [2022-11-03 03:53:07,115 INFO L226 Difference]: Without dead ends: 702 [2022-11-03 03:53:07,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:53:07,116 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 2676 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2676 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:07,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2676 Valid, 1926 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:53:07,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2022-11-03 03:53:07,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 239. [2022-11-03 03:53:07,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.4747899159663866) internal successors, (351), 238 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 03:53:07,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 351 transitions. [2022-11-03 03:53:07,132 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 351 transitions. Word has length 139 [2022-11-03 03:53:07,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:07,132 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 351 transitions. [2022-11-03 03:53:07,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:07,133 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 351 transitions. [2022-11-03 03:53:07,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:07,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:07,136 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, 1, 1, 1, 1, 1, 1, 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 03:53:07,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:07,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:07,355 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:07,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:07,356 INFO L85 PathProgramCache]: Analyzing trace with hash -397546275, now seen corresponding path program 1 times [2022-11-03 03:53:07,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:07,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758338353] [2022-11-03 03:53:07,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:07,358 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:07,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:07,359 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:07,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 03:53:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:08,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 03:53:08,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:08,294 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 03:53:08,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:08,295 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:08,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758338353] [2022-11-03 03:53:08,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758338353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:08,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:08,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 03:53:08,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641324264] [2022-11-03 03:53:08,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:08,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 03:53:08,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:08,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 03:53:08,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:53:08,298 INFO L87 Difference]: Start difference. First operand 239 states and 351 transitions. Second operand has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:09,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:09,672 INFO L93 Difference]: Finished difference Result 1203 states and 1760 transitions. [2022-11-03 03:53:09,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 03:53:09,673 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:09,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:09,677 INFO L225 Difference]: With dead ends: 1203 [2022-11-03 03:53:09,677 INFO L226 Difference]: Without dead ends: 966 [2022-11-03 03:53:09,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=384, Invalid=1022, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 03:53:09,679 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 6277 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6277 SdHoareTripleChecker+Valid, 2887 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:09,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6277 Valid, 2887 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 03:53:09,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2022-11-03 03:53:09,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 249. [2022-11-03 03:53:09,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.4596774193548387) internal successors, (362), 248 states have internal predecessors, (362), 0 states have call successors, (0), 0 states 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 03:53:09,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 362 transitions. [2022-11-03 03:53:09,693 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 362 transitions. Word has length 139 [2022-11-03 03:53:09,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:09,693 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 362 transitions. [2022-11-03 03:53:09,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.583333333333334) internal successors, (139), 12 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:09,694 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 362 transitions. [2022-11-03 03:53:09,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:09,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:09,696 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, 1, 1, 1, 1, 1, 1, 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 03:53:09,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:09,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:09,915 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:09,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:09,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1652862623, now seen corresponding path program 1 times [2022-11-03 03:53:09,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:09,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617406355] [2022-11-03 03:53:09,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:09,917 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:09,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:09,918 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:09,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 03:53:10,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:10,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 03:53:10,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:11,126 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 03:53:11,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:11,127 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:11,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617406355] [2022-11-03 03:53:11,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617406355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:11,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:11,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:11,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771841701] [2022-11-03 03:53:11,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:11,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:53:11,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:11,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:53:11,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:11,130 INFO L87 Difference]: Start difference. First operand 249 states and 362 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:11,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:11,684 INFO L93 Difference]: Finished difference Result 964 states and 1409 transitions. [2022-11-03 03:53:11,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:53:11,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:11,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:11,688 INFO L225 Difference]: With dead ends: 964 [2022-11-03 03:53:11,688 INFO L226 Difference]: Without dead ends: 717 [2022-11-03 03:53:11,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 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 03:53:11,690 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 2314 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:11,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2314 Valid, 1295 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:53:11,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2022-11-03 03:53:11,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 255. [2022-11-03 03:53:11,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.4566929133858268) internal successors, (370), 254 states have internal predecessors, (370), 0 states have call successors, (0), 0 states 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 03:53:11,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 370 transitions. [2022-11-03 03:53:11,704 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 370 transitions. Word has length 139 [2022-11-03 03:53:11,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:11,704 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 370 transitions. [2022-11-03 03:53:11,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:11,705 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 370 transitions. [2022-11-03 03:53:11,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:11,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:11,706 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, 1, 1, 1, 1, 1, 1, 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 03:53:11,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:11,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:11,927 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:11,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:11,927 INFO L85 PathProgramCache]: Analyzing trace with hash 560227421, now seen corresponding path program 1 times [2022-11-03 03:53:11,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:11,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877778740] [2022-11-03 03:53:11,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:11,929 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:11,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:11,930 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:11,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 03:53:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:12,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:53:12,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:12,756 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 03:53:12,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:12,756 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:12,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877778740] [2022-11-03 03:53:12,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877778740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:12,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:12,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:53:12,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740605147] [2022-11-03 03:53:12,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:12,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:53:12,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:12,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:53:12,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:53:12,760 INFO L87 Difference]: Start difference. First operand 255 states and 370 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:12,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:12,876 INFO L93 Difference]: Finished difference Result 1013 states and 1472 transitions. [2022-11-03 03:53:12,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:53:12,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:12,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:12,880 INFO L225 Difference]: With dead ends: 1013 [2022-11-03 03:53:12,881 INFO L226 Difference]: Without dead ends: 760 [2022-11-03 03:53:12,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 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 03:53:12,882 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 962 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:12,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 1331 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:12,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-03 03:53:12,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 301. [2022-11-03 03:53:12,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.43) internal successors, (429), 300 states have internal predecessors, (429), 0 states have call successors, (0), 0 states 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 03:53:12,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 429 transitions. [2022-11-03 03:53:12,899 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 429 transitions. Word has length 139 [2022-11-03 03:53:12,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:12,899 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 429 transitions. [2022-11-03 03:53:12,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:12,899 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 429 transitions. [2022-11-03 03:53:12,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:12,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:12,901 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, 1, 1, 1, 1, 1, 1, 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 03:53:12,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:13,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:13,121 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:13,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:13,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1282248293, now seen corresponding path program 1 times [2022-11-03 03:53:13,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:13,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422048175] [2022-11-03 03:53:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:13,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:13,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:13,125 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:13,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 03:53:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:13,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:53:13,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:13,801 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 03:53:13,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:13,802 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:13,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422048175] [2022-11-03 03:53:13,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422048175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:13,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:13,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:53:13,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554411246] [2022-11-03 03:53:13,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:13,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:53:13,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:13,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:53:13,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:53:13,805 INFO L87 Difference]: Start difference. First operand 301 states and 429 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:13,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:13,905 INFO L93 Difference]: Finished difference Result 1013 states and 1471 transitions. [2022-11-03 03:53:13,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:53:13,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:13,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:13,909 INFO L225 Difference]: With dead ends: 1013 [2022-11-03 03:53:13,909 INFO L226 Difference]: Without dead ends: 760 [2022-11-03 03:53:13,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 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 03:53:13,911 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 956 mSDsluCounter, 967 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:13,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 1330 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:13,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-03 03:53:13,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 303. [2022-11-03 03:53:13,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.4271523178807948) internal successors, (431), 302 states have internal predecessors, (431), 0 states have call successors, (0), 0 states 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 03:53:13,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 431 transitions. [2022-11-03 03:53:13,925 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 431 transitions. Word has length 139 [2022-11-03 03:53:13,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:13,925 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 431 transitions. [2022-11-03 03:53:13,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:13,926 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 431 transitions. [2022-11-03 03:53:13,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:13,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:13,928 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, 1, 1, 1, 1, 1, 1, 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 03:53:13,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:14,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:14,143 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:14,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:14,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1614891431, now seen corresponding path program 1 times [2022-11-03 03:53:14,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:14,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957651401] [2022-11-03 03:53:14,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:14,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:14,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:14,146 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:14,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 03:53:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:14,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:53:14,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:15,031 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 03:53:15,031 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:15,031 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:15,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957651401] [2022-11-03 03:53:15,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957651401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:15,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:15,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:15,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452439685] [2022-11-03 03:53:15,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:15,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:53:15,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:15,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:53:15,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:15,036 INFO L87 Difference]: Start difference. First operand 303 states and 431 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:15,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:15,245 INFO L93 Difference]: Finished difference Result 1070 states and 1545 transitions. [2022-11-03 03:53:15,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:53:15,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:15,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:15,249 INFO L225 Difference]: With dead ends: 1070 [2022-11-03 03:53:15,249 INFO L226 Difference]: Without dead ends: 817 [2022-11-03 03:53:15,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 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 03:53:15,251 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 2277 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2277 SdHoareTripleChecker+Valid, 1491 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 03:53:15,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2277 Valid, 1491 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:15,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-11-03 03:53:15,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 309. [2022-11-03 03:53:15,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.4253246753246753) internal successors, (439), 308 states have internal predecessors, (439), 0 states have call successors, (0), 0 states 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 03:53:15,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 439 transitions. [2022-11-03 03:53:15,266 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 439 transitions. Word has length 139 [2022-11-03 03:53:15,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:15,267 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 439 transitions. [2022-11-03 03:53:15,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:15,267 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 439 transitions. [2022-11-03 03:53:15,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:15,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:15,269 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, 1, 1, 1, 1, 1, 1, 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 03:53:15,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-03 03:53:15,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:15,490 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:15,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:15,491 INFO L85 PathProgramCache]: Analyzing trace with hash -225597417, now seen corresponding path program 1 times [2022-11-03 03:53:15,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:15,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304509754] [2022-11-03 03:53:15,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:15,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:15,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:15,494 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:15,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 03:53:16,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:16,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:53:16,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:16,378 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 03:53:16,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:16,379 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:16,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304509754] [2022-11-03 03:53:16,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304509754] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:16,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:16,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:16,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95572310] [2022-11-03 03:53:16,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:16,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:53:16,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:16,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:53:16,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:16,381 INFO L87 Difference]: Start difference. First operand 309 states and 439 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:16,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:16,585 INFO L93 Difference]: Finished difference Result 1078 states and 1554 transitions. [2022-11-03 03:53:16,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:53:16,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:16,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:16,588 INFO L225 Difference]: With dead ends: 1078 [2022-11-03 03:53:16,589 INFO L226 Difference]: Without dead ends: 819 [2022-11-03 03:53:16,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 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 03:53:16,590 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 2271 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2271 SdHoareTripleChecker+Valid, 1494 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 03:53:16,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2271 Valid, 1494 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:16,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2022-11-03 03:53:16,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 311. [2022-11-03 03:53:16,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.4225806451612903) internal successors, (441), 310 states have internal predecessors, (441), 0 states have call successors, (0), 0 states 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 03:53:16,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 441 transitions. [2022-11-03 03:53:16,604 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 441 transitions. Word has length 139 [2022-11-03 03:53:16,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:16,604 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 441 transitions. [2022-11-03 03:53:16,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:16,605 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 441 transitions. [2022-11-03 03:53:16,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:16,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:16,606 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, 1, 1, 1, 1, 1, 1, 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 03:53:16,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:16,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:16,816 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:16,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:16,816 INFO L85 PathProgramCache]: Analyzing trace with hash -2092306091, now seen corresponding path program 1 times [2022-11-03 03:53:16,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:16,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737719701] [2022-11-03 03:53:16,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:16,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:16,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:16,819 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:16,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 03:53:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:17,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 03:53:17,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:17,865 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 03:53:17,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:17,865 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:17,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737719701] [2022-11-03 03:53:17,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737719701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:17,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:17,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:17,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560740729] [2022-11-03 03:53:17,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:17,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:53:17,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:17,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:53:17,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:17,868 INFO L87 Difference]: Start difference. First operand 311 states and 441 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:18,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:18,336 INFO L93 Difference]: Finished difference Result 1082 states and 1557 transitions. [2022-11-03 03:53:18,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:53:18,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:18,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:18,340 INFO L225 Difference]: With dead ends: 1082 [2022-11-03 03:53:18,340 INFO L226 Difference]: Without dead ends: 821 [2022-11-03 03:53:18,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 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 03:53:18,342 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 2265 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2265 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:18,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2265 Valid, 1425 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:53:18,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2022-11-03 03:53:18,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 313. [2022-11-03 03:53:18,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 1.419871794871795) internal successors, (443), 312 states have internal predecessors, (443), 0 states have call successors, (0), 0 states 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 03:53:18,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 443 transitions. [2022-11-03 03:53:18,359 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 443 transitions. Word has length 139 [2022-11-03 03:53:18,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:18,380 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 443 transitions. [2022-11-03 03:53:18,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:18,380 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 443 transitions. [2022-11-03 03:53:18,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:18,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:18,382 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, 1, 1, 1, 1, 1, 1, 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 03:53:18,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:18,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:18,582 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:18,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:18,583 INFO L85 PathProgramCache]: Analyzing trace with hash -194809325, now seen corresponding path program 1 times [2022-11-03 03:53:18,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:18,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477119795] [2022-11-03 03:53:18,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:18,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:18,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:18,586 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:18,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 03:53:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:19,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:53:19,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:19,398 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 03:53:19,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:19,399 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:19,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477119795] [2022-11-03 03:53:19,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477119795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:19,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:19,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:19,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154916900] [2022-11-03 03:53:19,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:19,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:53:19,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:19,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:53:19,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:19,401 INFO L87 Difference]: Start difference. First operand 313 states and 443 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:19,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:19,625 INFO L93 Difference]: Finished difference Result 1088 states and 1563 transitions. [2022-11-03 03:53:19,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:53:19,626 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:19,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:19,629 INFO L225 Difference]: With dead ends: 1088 [2022-11-03 03:53:19,629 INFO L226 Difference]: Without dead ends: 825 [2022-11-03 03:53:19,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 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 03:53:19,631 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 2257 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2257 SdHoareTripleChecker+Valid, 1503 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 03:53:19,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2257 Valid, 1503 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:19,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2022-11-03 03:53:19,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 317. [2022-11-03 03:53:19,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.4177215189873418) internal successors, (448), 316 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 03:53:19,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 448 transitions. [2022-11-03 03:53:19,646 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 448 transitions. Word has length 139 [2022-11-03 03:53:19,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:19,646 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 448 transitions. [2022-11-03 03:53:19,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:19,647 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 448 transitions. [2022-11-03 03:53:19,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:19,648 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:19,648 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, 1, 1, 1, 1, 1, 1, 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 03:53:19,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:19,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:19,871 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:19,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:19,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1251540527, now seen corresponding path program 1 times [2022-11-03 03:53:19,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:19,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403754066] [2022-11-03 03:53:19,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:19,873 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:19,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:19,874 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:19,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 03:53:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:20,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:53:20,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:20,695 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 03:53:20,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:20,696 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:20,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403754066] [2022-11-03 03:53:20,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403754066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:20,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:20,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:20,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266241065] [2022-11-03 03:53:20,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:20,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:53:20,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:20,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:53:20,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:20,698 INFO L87 Difference]: Start difference. First operand 317 states and 448 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:20,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:20,939 INFO L93 Difference]: Finished difference Result 1094 states and 1569 transitions. [2022-11-03 03:53:20,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:53:20,940 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:20,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:20,943 INFO L225 Difference]: With dead ends: 1094 [2022-11-03 03:53:20,943 INFO L226 Difference]: Without dead ends: 827 [2022-11-03 03:53:20,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 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 03:53:20,945 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 2251 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2251 SdHoareTripleChecker+Valid, 1502 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 03:53:20,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2251 Valid, 1502 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:20,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2022-11-03 03:53:20,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 319. [2022-11-03 03:53:20,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 1.4150943396226414) internal successors, (450), 318 states have internal predecessors, (450), 0 states have call successors, (0), 0 states 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 03:53:20,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 450 transitions. [2022-11-03 03:53:20,960 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 450 transitions. Word has length 139 [2022-11-03 03:53:20,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:20,960 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 450 transitions. [2022-11-03 03:53:20,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:20,961 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 450 transitions. [2022-11-03 03:53:20,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:20,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:20,962 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, 1, 1, 1, 1, 1, 1, 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 03:53:20,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:21,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:21,178 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:21,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:21,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1424451855, now seen corresponding path program 1 times [2022-11-03 03:53:21,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:21,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619357304] [2022-11-03 03:53:21,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:21,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:21,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:21,182 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:21,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 03:53:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:21,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 03:53:21,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:22,238 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 03:53:22,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:22,238 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:22,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619357304] [2022-11-03 03:53:22,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619357304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:22,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:22,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:22,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775838510] [2022-11-03 03:53:22,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:22,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:53:22,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:22,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:53:22,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:22,240 INFO L87 Difference]: Start difference. First operand 319 states and 450 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:22,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:22,733 INFO L93 Difference]: Finished difference Result 1098 states and 1572 transitions. [2022-11-03 03:53:22,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:53:22,734 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:22,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:22,737 INFO L225 Difference]: With dead ends: 1098 [2022-11-03 03:53:22,737 INFO L226 Difference]: Without dead ends: 829 [2022-11-03 03:53:22,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 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 03:53:22,739 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 2245 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2245 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:22,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2245 Valid, 1437 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:53:22,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-11-03 03:53:22,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 321. [2022-11-03 03:53:22,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.4125) internal successors, (452), 320 states have internal predecessors, (452), 0 states have call successors, (0), 0 states 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 03:53:22,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 452 transitions. [2022-11-03 03:53:22,755 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 452 transitions. Word has length 139 [2022-11-03 03:53:22,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:22,756 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 452 transitions. [2022-11-03 03:53:22,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:22,756 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 452 transitions. [2022-11-03 03:53:22,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:22,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:22,758 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, 1, 1, 1, 1, 1, 1, 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 03:53:22,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:22,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:22,974 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:22,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:22,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1395951565, now seen corresponding path program 1 times [2022-11-03 03:53:22,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:22,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297034292] [2022-11-03 03:53:22,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:22,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:22,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:22,977 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:22,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 03:53:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:23,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:53:23,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:23,819 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 03:53:23,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:23,820 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:23,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297034292] [2022-11-03 03:53:23,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297034292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:23,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:23,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:23,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558551887] [2022-11-03 03:53:23,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:23,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:53:23,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:23,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:53:23,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:23,823 INFO L87 Difference]: Start difference. First operand 321 states and 452 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:24,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:24,134 INFO L93 Difference]: Finished difference Result 1104 states and 1578 transitions. [2022-11-03 03:53:24,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:53:24,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:24,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:24,138 INFO L225 Difference]: With dead ends: 1104 [2022-11-03 03:53:24,138 INFO L226 Difference]: Without dead ends: 833 [2022-11-03 03:53:24,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 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 03:53:24,141 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 2237 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2237 SdHoareTripleChecker+Valid, 1511 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 03:53:24,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2237 Valid, 1511 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:53:24,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-11-03 03:53:24,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 325. [2022-11-03 03:53:24,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.4104938271604939) internal successors, (457), 324 states have internal predecessors, (457), 0 states have call successors, (0), 0 states 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 03:53:24,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 457 transitions. [2022-11-03 03:53:24,161 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 457 transitions. Word has length 139 [2022-11-03 03:53:24,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:24,161 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 457 transitions. [2022-11-03 03:53:24,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:24,162 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 457 transitions. [2022-11-03 03:53:24,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:24,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:24,163 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, 1, 1, 1, 1, 1, 1, 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 03:53:24,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:24,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:24,387 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:24,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:24,387 INFO L85 PathProgramCache]: Analyzing trace with hash 401257867, now seen corresponding path program 1 times [2022-11-03 03:53:24,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:24,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125245437] [2022-11-03 03:53:24,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:24,389 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:24,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:24,389 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:24,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 03:53:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:24,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 03:53:24,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:25,336 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 03:53:25,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:25,337 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:25,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125245437] [2022-11-03 03:53:25,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125245437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:25,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:25,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:25,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080515431] [2022-11-03 03:53:25,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:25,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:53:25,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:25,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:53:25,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:25,340 INFO L87 Difference]: Start difference. First operand 325 states and 457 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:25,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:25,811 INFO L93 Difference]: Finished difference Result 1110 states and 1584 transitions. [2022-11-03 03:53:25,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:53:25,812 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:25,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:25,816 INFO L225 Difference]: With dead ends: 1110 [2022-11-03 03:53:25,816 INFO L226 Difference]: Without dead ends: 835 [2022-11-03 03:53:25,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 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 03:53:25,817 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 2231 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2231 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:25,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2231 Valid, 1446 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:53:25,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-11-03 03:53:25,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 327. [2022-11-03 03:53:25,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.4079754601226995) internal successors, (459), 326 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 03:53:25,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 459 transitions. [2022-11-03 03:53:25,833 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 459 transitions. Word has length 139 [2022-11-03 03:53:25,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:25,834 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 459 transitions. [2022-11-03 03:53:25,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:25,834 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 459 transitions. [2022-11-03 03:53:25,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:25,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:25,835 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, 1, 1, 1, 1, 1, 1, 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 03:53:25,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:26,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:26,054 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:26,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:26,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1557316919, now seen corresponding path program 1 times [2022-11-03 03:53:26,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:26,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94903651] [2022-11-03 03:53:26,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:26,056 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:26,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:26,058 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:26,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 03:53:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:26,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 03:53:26,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:27,735 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 03:53:27,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:27,736 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:27,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94903651] [2022-11-03 03:53:27,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94903651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:27,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:27,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:27,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397290168] [2022-11-03 03:53:27,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:27,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:53:27,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:27,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:53:27,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:27,741 INFO L87 Difference]: Start difference. First operand 327 states and 459 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:28,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:28,225 INFO L93 Difference]: Finished difference Result 1114 states and 1587 transitions. [2022-11-03 03:53:28,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:53:28,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:28,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:28,228 INFO L225 Difference]: With dead ends: 1114 [2022-11-03 03:53:28,229 INFO L226 Difference]: Without dead ends: 837 [2022-11-03 03:53:28,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 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 03:53:28,230 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 2225 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2225 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:28,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2225 Valid, 1457 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:53:28,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2022-11-03 03:53:28,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 329. [2022-11-03 03:53:28,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 328 states have (on average 1.4054878048780488) internal successors, (461), 328 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 03:53:28,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 461 transitions. [2022-11-03 03:53:28,247 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 461 transitions. Word has length 139 [2022-11-03 03:53:28,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:28,247 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 461 transitions. [2022-11-03 03:53:28,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:28,248 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 461 transitions. [2022-11-03 03:53:28,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:28,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:28,249 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, 1, 1, 1, 1, 1, 1, 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 03:53:28,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:28,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:28,468 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:28,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:28,468 INFO L85 PathProgramCache]: Analyzing trace with hash 858519431, now seen corresponding path program 1 times [2022-11-03 03:53:28,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:28,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559448769] [2022-11-03 03:53:28,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:28,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:28,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:28,470 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:28,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 03:53:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:28,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:53:29,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:29,312 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 03:53:29,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:29,313 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:29,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559448769] [2022-11-03 03:53:29,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1559448769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:29,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:29,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:29,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748106144] [2022-11-03 03:53:29,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:29,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:53:29,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:29,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:53:29,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:29,318 INFO L87 Difference]: Start difference. First operand 329 states and 461 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:29,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:29,600 INFO L93 Difference]: Finished difference Result 1063 states and 1517 transitions. [2022-11-03 03:53:29,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:53:29,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:29,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:29,604 INFO L225 Difference]: With dead ends: 1063 [2022-11-03 03:53:29,604 INFO L226 Difference]: Without dead ends: 784 [2022-11-03 03:53:29,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 134 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 03:53:29,605 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 2063 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2063 SdHoareTripleChecker+Valid, 1471 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:29,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2063 Valid, 1471 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:53:29,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-11-03 03:53:29,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 333. [2022-11-03 03:53:29,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 332 states have (on average 1.4036144578313252) internal successors, (466), 332 states have internal predecessors, (466), 0 states have call successors, (0), 0 states 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 03:53:29,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 466 transitions. [2022-11-03 03:53:29,620 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 466 transitions. Word has length 139 [2022-11-03 03:53:29,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:29,621 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 466 transitions. [2022-11-03 03:53:29,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:29,621 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 466 transitions. [2022-11-03 03:53:29,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:29,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:29,622 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, 1, 1, 1, 1, 1, 1, 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 03:53:29,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:29,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:29,841 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:29,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:29,842 INFO L85 PathProgramCache]: Analyzing trace with hash -283983035, now seen corresponding path program 1 times [2022-11-03 03:53:29,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:29,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804160784] [2022-11-03 03:53:29,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:29,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:29,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:29,844 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:29,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 03:53:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:30,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:53:30,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:30,723 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 03:53:30,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:30,723 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:30,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804160784] [2022-11-03 03:53:30,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804160784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:30,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:30,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:53:30,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247758341] [2022-11-03 03:53:30,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:30,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:53:30,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:30,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:53:30,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:30,725 INFO L87 Difference]: Start difference. First operand 333 states and 466 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:31,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:31,171 INFO L93 Difference]: Finished difference Result 1180 states and 1671 transitions. [2022-11-03 03:53:31,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:53:31,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:31,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:31,177 INFO L225 Difference]: With dead ends: 1180 [2022-11-03 03:53:31,177 INFO L226 Difference]: Without dead ends: 897 [2022-11-03 03:53:31,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 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 03:53:31,179 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 2542 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2542 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:31,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2542 Valid, 2129 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:53:31,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-11-03 03:53:31,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 335. [2022-11-03 03:53:31,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.401197604790419) internal successors, (468), 334 states have internal predecessors, (468), 0 states have call successors, (0), 0 states 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 03:53:31,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 468 transitions. [2022-11-03 03:53:31,195 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 468 transitions. Word has length 139 [2022-11-03 03:53:31,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:31,196 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 468 transitions. [2022-11-03 03:53:31,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:31,196 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 468 transitions. [2022-11-03 03:53:31,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:31,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:31,197 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, 1, 1, 1, 1, 1, 1, 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 03:53:31,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:31,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:31,418 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:31,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:31,419 INFO L85 PathProgramCache]: Analyzing trace with hash 555050627, now seen corresponding path program 1 times [2022-11-03 03:53:31,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:31,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578565032] [2022-11-03 03:53:31,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:31,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:31,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:31,421 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:31,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 03:53:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:32,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:53:32,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:32,334 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 03:53:32,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:32,334 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:32,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578565032] [2022-11-03 03:53:32,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578565032] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:32,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:32,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:53:32,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577875267] [2022-11-03 03:53:32,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:32,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:53:32,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:32,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:53:32,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:32,337 INFO L87 Difference]: Start difference. First operand 335 states and 468 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:32,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:32,856 INFO L93 Difference]: Finished difference Result 1186 states and 1677 transitions. [2022-11-03 03:53:32,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:53:32,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:32,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:32,861 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 03:53:32,861 INFO L226 Difference]: Without dead ends: 901 [2022-11-03 03:53:32,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 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 03:53:32,863 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 2533 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2533 SdHoareTripleChecker+Valid, 2135 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 03:53:32,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2533 Valid, 2135 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:53:32,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2022-11-03 03:53:32,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 339. [2022-11-03 03:53:32,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.3994082840236686) internal successors, (473), 338 states have internal predecessors, (473), 0 states have call successors, (0), 0 states 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 03:53:32,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 473 transitions. [2022-11-03 03:53:32,880 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 473 transitions. Word has length 139 [2022-11-03 03:53:32,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:32,880 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 473 transitions. [2022-11-03 03:53:32,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:32,887 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 473 transitions. [2022-11-03 03:53:32,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:32,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:32,888 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, 1, 1, 1, 1, 1, 1, 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 03:53:32,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:33,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:33,110 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:33,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:33,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1442273473, now seen corresponding path program 1 times [2022-11-03 03:53:33,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:33,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726794846] [2022-11-03 03:53:33,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:33,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:33,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:33,113 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:33,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 03:53:33,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:33,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:53:33,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:33,960 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 03:53:33,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:33,960 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:33,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726794846] [2022-11-03 03:53:33,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726794846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:33,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:33,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:53:33,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517632223] [2022-11-03 03:53:33,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:33,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:53:33,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:33,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:53:33,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:33,964 INFO L87 Difference]: Start difference. First operand 339 states and 473 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:34,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:34,445 INFO L93 Difference]: Finished difference Result 1192 states and 1683 transitions. [2022-11-03 03:53:34,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:53:34,446 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:34,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:34,448 INFO L225 Difference]: With dead ends: 1192 [2022-11-03 03:53:34,448 INFO L226 Difference]: Without dead ends: 903 [2022-11-03 03:53:34,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 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 03:53:34,449 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 2526 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2526 SdHoareTripleChecker+Valid, 2138 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:34,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2526 Valid, 2138 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:53:34,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-11-03 03:53:34,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 341. [2022-11-03 03:53:34,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.3970588235294117) internal successors, (475), 340 states have internal predecessors, (475), 0 states have call successors, (0), 0 states 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 03:53:34,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 475 transitions. [2022-11-03 03:53:34,470 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 475 transitions. Word has length 139 [2022-11-03 03:53:34,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:34,472 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 475 transitions. [2022-11-03 03:53:34,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:34,472 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 475 transitions. [2022-11-03 03:53:34,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:34,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:34,475 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, 1, 1, 1, 1, 1, 1, 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 03:53:34,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-11-03 03:53:34,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:34,686 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:34,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:34,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1519174271, now seen corresponding path program 1 times [2022-11-03 03:53:34,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:34,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893647794] [2022-11-03 03:53:34,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:34,688 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:34,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:34,689 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:34,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 03:53:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:35,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 03:53:35,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:36,000 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 03:53:36,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:36,001 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:36,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893647794] [2022-11-03 03:53:36,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893647794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:36,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:36,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:53:36,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190278136] [2022-11-03 03:53:36,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:36,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:53:36,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:36,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:53:36,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:36,004 INFO L87 Difference]: Start difference. First operand 341 states and 475 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:36,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:36,665 INFO L93 Difference]: Finished difference Result 1196 states and 1686 transitions. [2022-11-03 03:53:36,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:53:36,668 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:36,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:36,671 INFO L225 Difference]: With dead ends: 1196 [2022-11-03 03:53:36,671 INFO L226 Difference]: Without dead ends: 905 [2022-11-03 03:53:36,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 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 03:53:36,673 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 2516 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2516 SdHoareTripleChecker+Valid, 2071 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:36,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2516 Valid, 2071 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:53:36,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2022-11-03 03:53:36,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 343. [2022-11-03 03:53:36,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.394736842105263) internal successors, (477), 342 states have internal predecessors, (477), 0 states have call successors, (0), 0 states 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 03:53:36,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 477 transitions. [2022-11-03 03:53:36,688 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 477 transitions. Word has length 139 [2022-11-03 03:53:36,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:36,688 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 477 transitions. [2022-11-03 03:53:36,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:36,689 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 477 transitions. [2022-11-03 03:53:36,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:36,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:36,690 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, 1, 1, 1, 1, 1, 1, 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 03:53:36,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:36,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:36,890 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:36,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:36,891 INFO L85 PathProgramCache]: Analyzing trace with hash -867335235, now seen corresponding path program 1 times [2022-11-03 03:53:36,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:36,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924294845] [2022-11-03 03:53:36,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:36,892 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:36,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:36,893 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:36,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 03:53:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:37,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 03:53:37,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:38,754 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 03:53:38,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:38,755 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:38,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924294845] [2022-11-03 03:53:38,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924294845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:38,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:38,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:53:38,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892646226] [2022-11-03 03:53:38,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:38,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:53:38,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:38,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:53:38,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:38,757 INFO L87 Difference]: Start difference. First operand 343 states and 477 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:39,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:39,508 INFO L93 Difference]: Finished difference Result 1200 states and 1689 transitions. [2022-11-03 03:53:39,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:53:39,508 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:39,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:39,511 INFO L225 Difference]: With dead ends: 1200 [2022-11-03 03:53:39,511 INFO L226 Difference]: Without dead ends: 907 [2022-11-03 03:53:39,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 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 03:53:39,512 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 2509 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2509 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:39,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2509 Valid, 2077 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:53:39,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2022-11-03 03:53:39,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 345. [2022-11-03 03:53:39,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.3924418604651163) internal successors, (479), 344 states have internal predecessors, (479), 0 states have call successors, (0), 0 states 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 03:53:39,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 479 transitions. [2022-11-03 03:53:39,531 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 479 transitions. Word has length 139 [2022-11-03 03:53:39,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:39,533 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 479 transitions. [2022-11-03 03:53:39,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:39,534 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 479 transitions. [2022-11-03 03:53:39,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:39,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:39,544 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, 1, 1, 1, 1, 1, 1, 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 03:53:39,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:39,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:39,763 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:39,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:39,764 INFO L85 PathProgramCache]: Analyzing trace with hash 86604923, now seen corresponding path program 1 times [2022-11-03 03:53:39,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:39,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221551096] [2022-11-03 03:53:39,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:39,765 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:39,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:39,766 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:39,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 03:53:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:40,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:53:40,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:40,694 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 03:53:40,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:40,694 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:40,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221551096] [2022-11-03 03:53:40,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221551096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:40,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:40,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:40,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545621168] [2022-11-03 03:53:40,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:40,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:53:40,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:40,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:53:40,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:40,697 INFO L87 Difference]: Start difference. First operand 345 states and 479 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:41,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:41,023 INFO L93 Difference]: Finished difference Result 1093 states and 1544 transitions. [2022-11-03 03:53:41,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:53:41,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:41,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:41,026 INFO L225 Difference]: With dead ends: 1093 [2022-11-03 03:53:41,027 INFO L226 Difference]: Without dead ends: 798 [2022-11-03 03:53:41,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 134 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 03:53:41,028 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 2025 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:41,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2025 Valid, 1491 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:53:41,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-11-03 03:53:41,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 347. [2022-11-03 03:53:41,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.3901734104046244) internal successors, (481), 346 states have internal predecessors, (481), 0 states have call successors, (0), 0 states 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 03:53:41,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 481 transitions. [2022-11-03 03:53:41,043 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 481 transitions. Word has length 139 [2022-11-03 03:53:41,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:41,043 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 481 transitions. [2022-11-03 03:53:41,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:41,044 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 481 transitions. [2022-11-03 03:53:41,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:41,045 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:41,045 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, 1, 1, 1, 1, 1, 1, 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 03:53:41,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:41,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:41,264 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:41,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:41,264 INFO L85 PathProgramCache]: Analyzing trace with hash -645362503, now seen corresponding path program 1 times [2022-11-03 03:53:41,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:41,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869095148] [2022-11-03 03:53:41,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:41,265 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:41,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:41,267 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:41,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 03:53:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:41,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:53:41,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:42,110 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 03:53:42,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:42,111 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:42,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869095148] [2022-11-03 03:53:42,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869095148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:42,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:42,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:53:42,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514474490] [2022-11-03 03:53:42,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:42,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:53:42,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:42,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:53:42,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:42,113 INFO L87 Difference]: Start difference. First operand 347 states and 481 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:42,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:42,564 INFO L93 Difference]: Finished difference Result 1236 states and 1731 transitions. [2022-11-03 03:53:42,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:53:42,564 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:42,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:42,567 INFO L225 Difference]: With dead ends: 1236 [2022-11-03 03:53:42,567 INFO L226 Difference]: Without dead ends: 939 [2022-11-03 03:53:42,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 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 03:53:42,569 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 2555 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2555 SdHoareTripleChecker+Valid, 2149 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 03:53:42,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2555 Valid, 2149 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:53:42,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-11-03 03:53:42,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 349. [2022-11-03 03:53:42,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.3879310344827587) internal successors, (483), 348 states have internal predecessors, (483), 0 states have call successors, (0), 0 states 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 03:53:42,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 483 transitions. [2022-11-03 03:53:42,584 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 483 transitions. Word has length 139 [2022-11-03 03:53:42,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:42,585 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 483 transitions. [2022-11-03 03:53:42,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:42,585 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 483 transitions. [2022-11-03 03:53:42,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:42,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:42,586 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, 1, 1, 1, 1, 1, 1, 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 03:53:42,603 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-03 03:53:42,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:42,802 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:42,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:42,803 INFO L85 PathProgramCache]: Analyzing trace with hash -699755401, now seen corresponding path program 1 times [2022-11-03 03:53:42,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:42,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345456578] [2022-11-03 03:53:42,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:42,804 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:42,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:42,805 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:42,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-03 03:53:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:43,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 03:53:43,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:44,007 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 03:53:44,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:44,008 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:44,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345456578] [2022-11-03 03:53:44,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345456578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:44,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:44,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:53:44,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865891497] [2022-11-03 03:53:44,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:44,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:53:44,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:44,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:53:44,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:44,011 INFO L87 Difference]: Start difference. First operand 349 states and 483 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:44,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:44,657 INFO L93 Difference]: Finished difference Result 1240 states and 1734 transitions. [2022-11-03 03:53:44,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:53:44,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:44,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:44,660 INFO L225 Difference]: With dead ends: 1240 [2022-11-03 03:53:44,660 INFO L226 Difference]: Without dead ends: 941 [2022-11-03 03:53:44,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 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 03:53:44,661 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 2545 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2545 SdHoareTripleChecker+Valid, 2082 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:44,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2545 Valid, 2082 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:53:44,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-11-03 03:53:44,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 351. [2022-11-03 03:53:44,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.3857142857142857) internal successors, (485), 350 states have internal predecessors, (485), 0 states have call successors, (0), 0 states 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 03:53:44,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 485 transitions. [2022-11-03 03:53:44,678 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 485 transitions. Word has length 139 [2022-11-03 03:53:44,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:44,679 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 485 transitions. [2022-11-03 03:53:44,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:44,679 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 485 transitions. [2022-11-03 03:53:44,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:44,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:44,681 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, 1, 1, 1, 1, 1, 1, 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 03:53:44,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:44,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:44,890 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:44,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:44,891 INFO L85 PathProgramCache]: Analyzing trace with hash -20483147, now seen corresponding path program 1 times [2022-11-03 03:53:44,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:44,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078262870] [2022-11-03 03:53:44,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:44,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:44,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:44,894 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:44,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 03:53:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:45,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 03:53:45,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:45,804 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 03:53:45,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:45,804 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:45,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078262870] [2022-11-03 03:53:45,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078262870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:45,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:45,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:45,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685373962] [2022-11-03 03:53:45,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:45,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:53:45,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:45,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:53:45,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:45,806 INFO L87 Difference]: Start difference. First operand 351 states and 485 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:46,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:46,122 INFO L93 Difference]: Finished difference Result 1105 states and 1553 transitions. [2022-11-03 03:53:46,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:53:46,123 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:46,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:46,127 INFO L225 Difference]: With dead ends: 1105 [2022-11-03 03:53:46,127 INFO L226 Difference]: Without dead ends: 804 [2022-11-03 03:53:46,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 134 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 03:53:46,128 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 2007 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:46,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2007 Valid, 1499 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:53:46,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-11-03 03:53:46,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 353. [2022-11-03 03:53:46,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.3835227272727273) internal successors, (487), 352 states have internal predecessors, (487), 0 states have call successors, (0), 0 states 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 03:53:46,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 487 transitions. [2022-11-03 03:53:46,146 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 487 transitions. Word has length 139 [2022-11-03 03:53:46,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:46,146 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 487 transitions. [2022-11-03 03:53:46,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:46,147 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 487 transitions. [2022-11-03 03:53:46,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:46,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:46,148 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, 1, 1, 1, 1, 1, 1, 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 03:53:46,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-11-03 03:53:46,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:46,354 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:46,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:46,355 INFO L85 PathProgramCache]: Analyzing trace with hash 181340787, now seen corresponding path program 1 times [2022-11-03 03:53:46,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:46,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107215836] [2022-11-03 03:53:46,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:46,357 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:46,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:46,358 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:46,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 03:53:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:46,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 03:53:46,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:47,789 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 03:53:47,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:47,789 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:47,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107215836] [2022-11-03 03:53:47,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107215836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:47,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:47,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:53:47,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495534955] [2022-11-03 03:53:47,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:47,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:53:47,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:47,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:53:47,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:47,792 INFO L87 Difference]: Start difference. First operand 353 states and 487 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:48,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:48,440 INFO L93 Difference]: Finished difference Result 1262 states and 1758 transitions. [2022-11-03 03:53:48,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:53:48,440 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:48,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:48,443 INFO L225 Difference]: With dead ends: 1262 [2022-11-03 03:53:48,443 INFO L226 Difference]: Without dead ends: 959 [2022-11-03 03:53:48,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 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 03:53:48,444 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 2553 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2553 SdHoareTripleChecker+Valid, 2089 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:48,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2553 Valid, 2089 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:53:48,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-11-03 03:53:48,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 357. [2022-11-03 03:53:48,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.3820224719101124) internal successors, (492), 356 states have internal predecessors, (492), 0 states have call successors, (0), 0 states 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 03:53:48,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 492 transitions. [2022-11-03 03:53:48,456 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 492 transitions. Word has length 139 [2022-11-03 03:53:48,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:48,457 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 492 transitions. [2022-11-03 03:53:48,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:48,457 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 492 transitions. [2022-11-03 03:53:48,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:48,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:48,458 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, 1, 1, 1, 1, 1, 1, 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 03:53:48,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:48,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:48,677 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:48,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:48,678 INFO L85 PathProgramCache]: Analyzing trace with hash 222015537, now seen corresponding path program 1 times [2022-11-03 03:53:48,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:48,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677801731] [2022-11-03 03:53:48,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:48,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:48,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:48,680 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:48,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 03:53:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:49,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 03:53:49,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:50,783 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 03:53:50,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:50,784 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:50,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677801731] [2022-11-03 03:53:50,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677801731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:50,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:50,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:53:50,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270364133] [2022-11-03 03:53:50,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:50,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:53:50,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:50,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:53:50,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:50,788 INFO L87 Difference]: Start difference. First operand 357 states and 492 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:51,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:51,630 INFO L93 Difference]: Finished difference Result 1256 states and 1749 transitions. [2022-11-03 03:53:51,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:53:51,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:51,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:51,632 INFO L225 Difference]: With dead ends: 1256 [2022-11-03 03:53:51,633 INFO L226 Difference]: Without dead ends: 949 [2022-11-03 03:53:51,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:53:51,634 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 2522 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2522 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:51,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2522 Valid, 2095 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:53:51,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-11-03 03:53:51,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 359. [2022-11-03 03:53:51,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.3798882681564246) internal successors, (494), 358 states have internal predecessors, (494), 0 states have call successors, (0), 0 states 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 03:53:51,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 494 transitions. [2022-11-03 03:53:51,653 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 494 transitions. Word has length 139 [2022-11-03 03:53:51,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:51,653 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 494 transitions. [2022-11-03 03:53:51,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:51,654 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 494 transitions. [2022-11-03 03:53:51,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:51,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:51,655 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, 1, 1, 1, 1, 1, 1, 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 03:53:51,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-03 03:53:51,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:51,866 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:51,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:51,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1098034543, now seen corresponding path program 1 times [2022-11-03 03:53:51,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:51,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954524202] [2022-11-03 03:53:51,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:51,869 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:51,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:51,870 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:51,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-03 03:53:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:52,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-03 03:53:52,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:55,326 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 03:53:55,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:55,327 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:55,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954524202] [2022-11-03 03:53:55,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954524202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:55,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:55,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:53:55,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539225482] [2022-11-03 03:53:55,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:55,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:53:55,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:55,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:53:55,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:53:55,329 INFO L87 Difference]: Start difference. First operand 359 states and 494 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:56,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:56,353 INFO L93 Difference]: Finished difference Result 1232 states and 1716 transitions. [2022-11-03 03:53:56,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:53:56,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:56,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:56,356 INFO L225 Difference]: With dead ends: 1232 [2022-11-03 03:53:56,357 INFO L226 Difference]: Without dead ends: 923 [2022-11-03 03:53:56,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:53:56,358 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 2458 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2458 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:56,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2458 Valid, 2098 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:53:56,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2022-11-03 03:53:56,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 361. [2022-11-03 03:53:56,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.3777777777777778) internal successors, (496), 360 states have internal predecessors, (496), 0 states have call successors, (0), 0 states 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 03:53:56,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 496 transitions. [2022-11-03 03:53:56,378 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 496 transitions. Word has length 139 [2022-11-03 03:53:56,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:56,378 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 496 transitions. [2022-11-03 03:53:56,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:56,379 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 496 transitions. [2022-11-03 03:53:56,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:56,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:56,380 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, 1, 1, 1, 1, 1, 1, 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 03:53:56,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:56,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:56,602 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:56,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:56,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1658592723, now seen corresponding path program 1 times [2022-11-03 03:53:56,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:56,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394439426] [2022-11-03 03:53:56,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:56,604 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:56,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:56,605 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:56,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 03:53:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:57,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 03:53:57,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:57,644 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 03:53:57,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:57,644 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:57,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394439426] [2022-11-03 03:53:57,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394439426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:57,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:57,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:53:57,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490869147] [2022-11-03 03:53:57,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:57,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:53:57,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:57,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:53:57,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:53:57,646 INFO L87 Difference]: Start difference. First operand 361 states and 496 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:58,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:58,072 INFO L93 Difference]: Finished difference Result 1418 states and 1957 transitions. [2022-11-03 03:53:58,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:53:58,073 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:58,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:58,076 INFO L225 Difference]: With dead ends: 1418 [2022-11-03 03:53:58,077 INFO L226 Difference]: Without dead ends: 1107 [2022-11-03 03:53:58,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 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 03:53:58,078 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 2126 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2126 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:58,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2126 Valid, 1781 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:53:58,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2022-11-03 03:53:58,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 363. [2022-11-03 03:53:58,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.3756906077348066) internal successors, (498), 362 states have internal predecessors, (498), 0 states have call successors, (0), 0 states 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 03:53:58,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 498 transitions. [2022-11-03 03:53:58,094 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 498 transitions. Word has length 139 [2022-11-03 03:53:58,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:58,094 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 498 transitions. [2022-11-03 03:53:58,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:58,095 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 498 transitions. [2022-11-03 03:53:58,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:58,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:58,096 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, 1, 1, 1, 1, 1, 1, 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 03:53:58,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:58,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:58,298 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:58,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:58,299 INFO L85 PathProgramCache]: Analyzing trace with hash 269679979, now seen corresponding path program 1 times [2022-11-03 03:53:58,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:58,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526815051] [2022-11-03 03:53:58,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:58,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:58,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:58,301 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:58,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-03 03:53:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:58,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:53:58,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:53:59,045 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 03:53:59,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:53:59,045 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:53:59,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526815051] [2022-11-03 03:53:59,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526815051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:53:59,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:53:59,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:53:59,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686671519] [2022-11-03 03:53:59,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:53:59,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:53:59,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:53:59,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:53:59,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:53:59,047 INFO L87 Difference]: Start difference. First operand 363 states and 498 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:59,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:53:59,155 INFO L93 Difference]: Finished difference Result 1253 states and 1738 transitions. [2022-11-03 03:53:59,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:53:59,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:53:59,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:53:59,158 INFO L225 Difference]: With dead ends: 1253 [2022-11-03 03:53:59,159 INFO L226 Difference]: Without dead ends: 940 [2022-11-03 03:53:59,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 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 03:53:59,160 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 770 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:53:59,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [770 Valid, 1329 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:53:59,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2022-11-03 03:53:59,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 497. [2022-11-03 03:53:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 1.3608870967741935) internal successors, (675), 496 states have internal predecessors, (675), 0 states have call successors, (0), 0 states 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 03:53:59,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 675 transitions. [2022-11-03 03:53:59,182 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 675 transitions. Word has length 139 [2022-11-03 03:53:59,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:53:59,183 INFO L495 AbstractCegarLoop]: Abstraction has 497 states and 675 transitions. [2022-11-03 03:53:59,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:53:59,183 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 675 transitions. [2022-11-03 03:53:59,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:53:59,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:53:59,185 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, 1, 1, 1, 1, 1, 1, 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 03:53:59,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-03 03:53:59,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:53:59,407 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:53:59,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:53:59,407 INFO L85 PathProgramCache]: Analyzing trace with hash 517826473, now seen corresponding path program 1 times [2022-11-03 03:53:59,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:53:59,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [241828816] [2022-11-03 03:53:59,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:53:59,409 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:53:59,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:53:59,410 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:53:59,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 03:53:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:53:59,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:54:00,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:00,141 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 03:54:00,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:54:00,141 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:54:00,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [241828816] [2022-11-03 03:54:00,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [241828816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:00,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:00,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:54:00,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773480170] [2022-11-03 03:54:00,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:00,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:54:00,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:54:00,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:54:00,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:54:00,143 INFO L87 Difference]: Start difference. First operand 497 states and 675 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:00,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:00,243 INFO L93 Difference]: Finished difference Result 1253 states and 1737 transitions. [2022-11-03 03:54:00,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:54:00,244 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:54:00,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:00,246 INFO L225 Difference]: With dead ends: 1253 [2022-11-03 03:54:00,246 INFO L226 Difference]: Without dead ends: 940 [2022-11-03 03:54:00,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 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 03:54:00,247 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 749 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:00,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 1328 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:54:00,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2022-11-03 03:54:00,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 505. [2022-11-03 03:54:00,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 504 states have (on average 1.3611111111111112) internal successors, (686), 504 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 03:54:00,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 686 transitions. [2022-11-03 03:54:00,269 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 686 transitions. Word has length 139 [2022-11-03 03:54:00,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:00,270 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 686 transitions. [2022-11-03 03:54:00,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:00,271 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 686 transitions. [2022-11-03 03:54:00,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:54:00,272 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:00,272 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, 1, 1, 1, 1, 1, 1, 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 03:54:00,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:00,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:54:00,486 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:00,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:00,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1726156825, now seen corresponding path program 1 times [2022-11-03 03:54:00,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:54:00,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675361853] [2022-11-03 03:54:00,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:00,488 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:54:00,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:54:00,489 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:54:00,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-03 03:54:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:01,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-03 03:54:01,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:03,421 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 03:54:03,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:54:03,422 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:54:03,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675361853] [2022-11-03 03:54:03,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675361853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:03,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:03,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:54:03,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102176346] [2022-11-03 03:54:03,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:03,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:54:03,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:54:03,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:54:03,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:54:03,424 INFO L87 Difference]: Start difference. First operand 505 states and 686 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:04,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:04,317 INFO L93 Difference]: Finished difference Result 1494 states and 2060 transitions. [2022-11-03 03:54:04,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 03:54:04,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:54:04,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:04,320 INFO L225 Difference]: With dead ends: 1494 [2022-11-03 03:54:04,320 INFO L226 Difference]: Without dead ends: 1181 [2022-11-03 03:54:04,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 03:54:04,321 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 2572 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2572 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:04,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2572 Valid, 2129 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 03:54:04,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-11-03 03:54:04,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 551. [2022-11-03 03:54:04,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 550 states have (on average 1.3636363636363635) internal successors, (750), 550 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 03:54:04,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 750 transitions. [2022-11-03 03:54:04,349 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 750 transitions. Word has length 139 [2022-11-03 03:54:04,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:04,350 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 750 transitions. [2022-11-03 03:54:04,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:04,350 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 750 transitions. [2022-11-03 03:54:04,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:54:04,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:04,351 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, 1, 1, 1, 1, 1, 1, 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 03:54:04,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:04,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:54:04,571 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:04,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:04,572 INFO L85 PathProgramCache]: Analyzing trace with hash 2059337381, now seen corresponding path program 1 times [2022-11-03 03:54:04,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:54:04,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119061622] [2022-11-03 03:54:04,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:04,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:54:04,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:54:04,574 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:54:04,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-03 03:54:05,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:05,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 136 conjunts are in the unsatisfiable core [2022-11-03 03:54:05,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:15,830 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 03:54:15,830 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:54:15,831 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:54:15,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119061622] [2022-11-03 03:54:15,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119061622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:15,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:15,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-03 03:54:15,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296386031] [2022-11-03 03:54:15,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:15,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-03 03:54:15,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:54:15,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-03 03:54:15,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=599, Unknown=0, NotChecked=0, Total=650 [2022-11-03 03:54:15,833 INFO L87 Difference]: Start difference. First operand 551 states and 750 transitions. Second operand has 26 states, 26 states have (on average 5.346153846153846) internal successors, (139), 26 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:21,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:21,851 INFO L93 Difference]: Finished difference Result 2564 states and 3506 transitions. [2022-11-03 03:54:21,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 03:54:21,853 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.346153846153846) internal successors, (139), 26 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:54:21,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:21,860 INFO L225 Difference]: With dead ends: 2564 [2022-11-03 03:54:21,860 INFO L226 Difference]: Without dead ends: 2225 [2022-11-03 03:54:21,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=278, Invalid=1884, Unknown=0, NotChecked=0, Total=2162 [2022-11-03 03:54:21,862 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 5350 mSDsluCounter, 10464 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5350 SdHoareTripleChecker+Valid, 10891 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 344 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:21,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5350 Valid, 10891 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 958 Invalid, 0 Unknown, 344 Unchecked, 2.1s Time] [2022-11-03 03:54:21,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2022-11-03 03:54:21,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 731. [2022-11-03 03:54:21,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 730 states have (on average 1.3520547945205479) internal successors, (987), 730 states have internal predecessors, (987), 0 states have call successors, (0), 0 states 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 03:54:21,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 987 transitions. [2022-11-03 03:54:21,908 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 987 transitions. Word has length 139 [2022-11-03 03:54:21,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:21,908 INFO L495 AbstractCegarLoop]: Abstraction has 731 states and 987 transitions. [2022-11-03 03:54:21,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.346153846153846) internal successors, (139), 26 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:21,909 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 987 transitions. [2022-11-03 03:54:21,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:54:21,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:21,911 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, 1, 1, 1, 1, 1, 1, 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 03:54:21,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:22,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:54:22,126 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:22,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:22,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1925323875, now seen corresponding path program 1 times [2022-11-03 03:54:22,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:54:22,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20103510] [2022-11-03 03:54:22,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:22,128 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:54:22,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:54:22,129 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:54:22,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-03 03:54:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:22,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:54:22,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:22,990 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 03:54:22,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:54:22,991 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:54:22,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20103510] [2022-11-03 03:54:22,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20103510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:22,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:22,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:54:22,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779317973] [2022-11-03 03:54:22,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:22,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:54:22,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:54:22,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:54:22,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:54:22,993 INFO L87 Difference]: Start difference. First operand 731 states and 987 transitions. Second operand has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:23,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:23,100 INFO L93 Difference]: Finished difference Result 1537 states and 2119 transitions. [2022-11-03 03:54:23,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:54:23,100 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:54:23,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:23,103 INFO L225 Difference]: With dead ends: 1537 [2022-11-03 03:54:23,103 INFO L226 Difference]: Without dead ends: 1198 [2022-11-03 03:54:23,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 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 03:54:23,104 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 713 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:23,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 1327 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:54:23,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2022-11-03 03:54:23,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 751. [2022-11-03 03:54:23,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 1.3533333333333333) internal successors, (1015), 750 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states 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 03:54:23,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1015 transitions. [2022-11-03 03:54:23,132 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1015 transitions. Word has length 139 [2022-11-03 03:54:23,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:23,132 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 1015 transitions. [2022-11-03 03:54:23,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.75) internal successors, (139), 4 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:23,133 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1015 transitions. [2022-11-03 03:54:23,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:54:23,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:23,134 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, 1, 1, 1, 1, 1, 1, 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 03:54:23,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-11-03 03:54:23,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:54:23,355 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:23,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:23,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1107675425, now seen corresponding path program 1 times [2022-11-03 03:54:23,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:54:23,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332210599] [2022-11-03 03:54:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:23,357 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:54:23,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:54:23,358 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:54:23,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-03 03:54:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:23,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:54:23,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:23,966 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 03:54:23,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:54:23,966 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:54:23,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332210599] [2022-11-03 03:54:23,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332210599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:23,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:23,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:54:23,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514032145] [2022-11-03 03:54:23,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:23,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:54:23,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:54:23,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:54:23,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:54:23,968 INFO L87 Difference]: Start difference. First operand 751 states and 1015 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:24,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:24,108 INFO L93 Difference]: Finished difference Result 1770 states and 2432 transitions. [2022-11-03 03:54:24,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:54:24,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:54:24,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:24,112 INFO L225 Difference]: With dead ends: 1770 [2022-11-03 03:54:24,112 INFO L226 Difference]: Without dead ends: 1431 [2022-11-03 03:54:24,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 137 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 03:54:24,114 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 1575 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:24,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 2025 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:54:24,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2022-11-03 03:54:24,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 773. [2022-11-03 03:54:24,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 772 states have (on average 1.354922279792746) internal successors, (1046), 772 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states 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 03:54:24,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1046 transitions. [2022-11-03 03:54:24,144 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1046 transitions. Word has length 139 [2022-11-03 03:54:24,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:24,145 INFO L495 AbstractCegarLoop]: Abstraction has 773 states and 1046 transitions. [2022-11-03 03:54:24,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:24,145 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1046 transitions. [2022-11-03 03:54:24,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 03:54:24,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:24,147 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, 1, 1, 1, 1, 1, 1, 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 03:54:24,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:24,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:54:24,362 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:24,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:24,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1164933727, now seen corresponding path program 1 times [2022-11-03 03:54:24,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:54:24,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826083222] [2022-11-03 03:54:24,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:24,365 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:54:24,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:54:24,367 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:54:24,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-03 03:54:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:24,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 03:54:24,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:25,463 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 03:54:25,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:54:25,464 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:54:25,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826083222] [2022-11-03 03:54:25,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826083222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:25,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:25,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:54:25,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248506996] [2022-11-03 03:54:25,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:25,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:54:25,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:54:25,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:54:25,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:54:25,466 INFO L87 Difference]: Start difference. First operand 773 states and 1046 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:25,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:25,761 INFO L93 Difference]: Finished difference Result 1161 states and 1589 transitions. [2022-11-03 03:54:25,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:54:25,762 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2022-11-03 03:54:25,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:25,763 INFO L225 Difference]: With dead ends: 1161 [2022-11-03 03:54:25,764 INFO L226 Difference]: Without dead ends: 1159 [2022-11-03 03:54:25,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 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 03:54:25,764 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 861 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:25,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1494 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:54:25,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2022-11-03 03:54:25,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 805. [2022-11-03 03:54:25,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 804 states have (on average 1.3582089552238805) internal successors, (1092), 804 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states 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 03:54:25,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1092 transitions. [2022-11-03 03:54:25,788 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1092 transitions. Word has length 139 [2022-11-03 03:54:25,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:25,788 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1092 transitions. [2022-11-03 03:54:25,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 5 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:54:25,788 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1092 transitions. [2022-11-03 03:54:25,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:54:25,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:25,792 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, 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 03:54:25,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:26,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:54:26,010 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:26,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:26,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1887064715, now seen corresponding path program 1 times [2022-11-03 03:54:26,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:54:26,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1582673977] [2022-11-03 03:54:26,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:26,014 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:54:26,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:54:26,015 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:54:26,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-03 03:54:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:27,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-03 03:54:27,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:32,811 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:54:32,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:54:32,812 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:54:32,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1582673977] [2022-11-03 03:54:32,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1582673977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:32,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:32,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-03 03:54:32,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641146797] [2022-11-03 03:54:32,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:32,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-03 03:54:32,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:54:32,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-03 03:54:32,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2022-11-03 03:54:32,814 INFO L87 Difference]: Start difference. First operand 805 states and 1092 transitions. Second operand has 21 states, 21 states have (on average 17.333333333333332) internal successors, (364), 21 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:54:32,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:32,935 INFO L93 Difference]: Finished difference Result 1864 states and 2557 transitions. [2022-11-03 03:54:32,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 03:54:32,936 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 17.333333333333332) internal successors, (364), 21 states have internal predecessors, (364), 0 states have call successors, (0), 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 364 [2022-11-03 03:54:32,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:32,938 INFO L225 Difference]: With dead ends: 1864 [2022-11-03 03:54:32,938 INFO L226 Difference]: Without dead ends: 1507 [2022-11-03 03:54:32,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2022-11-03 03:54:32,939 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 1001 mSDsluCounter, 7484 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 7937 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 396 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:32,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 7937 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 396 Unchecked, 0.0s Time] [2022-11-03 03:54:32,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2022-11-03 03:54:32,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 925. [2022-11-03 03:54:32,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 924 states have (on average 1.3593073593073592) internal successors, (1256), 924 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states 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 03:54:32,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1256 transitions. [2022-11-03 03:54:32,967 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1256 transitions. Word has length 364 [2022-11-03 03:54:32,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:32,968 INFO L495 AbstractCegarLoop]: Abstraction has 925 states and 1256 transitions. [2022-11-03 03:54:32,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.333333333333332) internal successors, (364), 21 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:54:32,968 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1256 transitions. [2022-11-03 03:54:32,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:54:32,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:32,973 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, 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 03:54:33,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:33,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:54:33,187 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:33,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:33,187 INFO L85 PathProgramCache]: Analyzing trace with hash 536654605, now seen corresponding path program 1 times [2022-11-03 03:54:33,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:54:33,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172456336] [2022-11-03 03:54:33,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:33,191 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:54:33,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:54:33,192 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:54:33,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-03 03:54:34,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:34,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-03 03:54:34,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:41,681 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:54:41,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:54:41,681 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:54:41,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172456336] [2022-11-03 03:54:41,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172456336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:41,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:41,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-03 03:54:41,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608326737] [2022-11-03 03:54:41,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:41,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 03:54:41,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:54:41,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 03:54:41,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-11-03 03:54:41,684 INFO L87 Difference]: Start difference. First operand 925 states and 1256 transitions. Second operand has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:54:42,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:42,459 INFO L93 Difference]: Finished difference Result 2440 states and 3350 transitions. [2022-11-03 03:54:42,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 03:54:42,460 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 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 364 [2022-11-03 03:54:42,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:42,462 INFO L225 Difference]: With dead ends: 2440 [2022-11-03 03:54:42,462 INFO L226 Difference]: Without dead ends: 2083 [2022-11-03 03:54:42,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2022-11-03 03:54:42,464 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 2470 mSDsluCounter, 8130 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2470 SdHoareTripleChecker+Valid, 8566 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1124 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:42,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2470 Valid, 8566 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 174 Invalid, 0 Unknown, 1124 Unchecked, 0.4s Time] [2022-11-03 03:54:42,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2022-11-03 03:54:42,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 929. [2022-11-03 03:54:42,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 928 states have (on average 1.3577586206896552) internal successors, (1260), 928 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states 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 03:54:42,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1260 transitions. [2022-11-03 03:54:42,502 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1260 transitions. Word has length 364 [2022-11-03 03:54:42,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:42,502 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1260 transitions. [2022-11-03 03:54:42,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:54:42,503 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1260 transitions. [2022-11-03 03:54:42,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:54:42,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:42,506 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, 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 03:54:42,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-11-03 03:54:42,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:54:42,722 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:42,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:42,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1312902159, now seen corresponding path program 1 times [2022-11-03 03:54:42,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:54:42,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044938504] [2022-11-03 03:54:42,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:42,725 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:54:42,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:54:42,726 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:54:42,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-03 03:54:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:43,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:54:43,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:43,878 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:54:43,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:54:43,878 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:54:43,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044938504] [2022-11-03 03:54:43,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044938504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:43,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:43,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:54:43,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973542743] [2022-11-03 03:54:43,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:43,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:54:43,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:54:43,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:54:43,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:54:43,883 INFO L87 Difference]: Start difference. First operand 929 states and 1260 transitions. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:54:44,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:44,049 INFO L93 Difference]: Finished difference Result 1299 states and 1777 transitions. [2022-11-03 03:54:44,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:54:44,049 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 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 364 [2022-11-03 03:54:44,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:44,051 INFO L225 Difference]: With dead ends: 1299 [2022-11-03 03:54:44,051 INFO L226 Difference]: Without dead ends: 942 [2022-11-03 03:54:44,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 361 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 03:54:44,052 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 525 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:44,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 714 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:54:44,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2022-11-03 03:54:44,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 929. [2022-11-03 03:54:44,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 928 states have (on average 1.3566810344827587) internal successors, (1259), 928 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states 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 03:54:44,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1259 transitions. [2022-11-03 03:54:44,074 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1259 transitions. Word has length 364 [2022-11-03 03:54:44,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:44,075 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1259 transitions. [2022-11-03 03:54:44,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:54:44,075 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1259 transitions. [2022-11-03 03:54:44,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:54:44,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:44,079 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, 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 03:54:44,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:44,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:54:44,297 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:44,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:44,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1558710033, now seen corresponding path program 1 times [2022-11-03 03:54:44,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:54:44,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824365888] [2022-11-03 03:54:44,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:44,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:54:44,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:54:44,302 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:54:44,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-03 03:54:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:45,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:54:45,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:45,627 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:54:45,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:54:45,627 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:54:45,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824365888] [2022-11-03 03:54:45,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824365888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:45,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:45,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:54:45,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871870163] [2022-11-03 03:54:45,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:45,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:54:45,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:54:45,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:54:45,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:54:45,630 INFO L87 Difference]: Start difference. First operand 929 states and 1259 transitions. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:54:45,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:45,864 INFO L93 Difference]: Finished difference Result 1303 states and 1780 transitions. [2022-11-03 03:54:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:54:45,864 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 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 364 [2022-11-03 03:54:45,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:45,867 INFO L225 Difference]: With dead ends: 1303 [2022-11-03 03:54:45,867 INFO L226 Difference]: Without dead ends: 946 [2022-11-03 03:54:45,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 361 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 03:54:45,868 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 519 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:45,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 721 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:54:45,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2022-11-03 03:54:45,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 929. [2022-11-03 03:54:45,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 929 states, 928 states have (on average 1.355603448275862) internal successors, (1258), 928 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states 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 03:54:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1258 transitions. [2022-11-03 03:54:45,894 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1258 transitions. Word has length 364 [2022-11-03 03:54:45,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:45,894 INFO L495 AbstractCegarLoop]: Abstraction has 929 states and 1258 transitions. [2022-11-03 03:54:45,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:54:45,895 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1258 transitions. [2022-11-03 03:54:45,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:54:45,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:45,899 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, 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 03:54:45,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:46,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:54:46,115 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:46,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:46,115 INFO L85 PathProgramCache]: Analyzing trace with hash 244880147, now seen corresponding path program 1 times [2022-11-03 03:54:46,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:54:46,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019158399] [2022-11-03 03:54:46,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:46,117 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:54:46,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:54:46,118 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:54:46,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-03 03:54:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:47,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:54:47,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:54:47,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:54:47,580 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:54:47,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019158399] [2022-11-03 03:54:47,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019158399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:47,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:47,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:54:47,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329264587] [2022-11-03 03:54:47,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:47,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:54:47,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:54:47,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:54:47,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:54:47,583 INFO L87 Difference]: Start difference. First operand 929 states and 1258 transitions. Second operand has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:54:47,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:47,855 INFO L93 Difference]: Finished difference Result 1732 states and 2380 transitions. [2022-11-03 03:54:47,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:54:47,856 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 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 364 [2022-11-03 03:54:47,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:47,859 INFO L225 Difference]: With dead ends: 1732 [2022-11-03 03:54:47,859 INFO L226 Difference]: Without dead ends: 1375 [2022-11-03 03:54:47,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 358 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 03:54:47,861 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 712 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 2628 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:47,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 2628 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 53 Unchecked, 0.2s Time] [2022-11-03 03:54:47,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2022-11-03 03:54:47,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 957. [2022-11-03 03:54:47,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 956 states have (on average 1.356694560669456) internal successors, (1297), 956 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states 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 03:54:47,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1297 transitions. [2022-11-03 03:54:47,888 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1297 transitions. Word has length 364 [2022-11-03 03:54:47,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:47,888 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 1297 transitions. [2022-11-03 03:54:47,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:54:47,889 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1297 transitions. [2022-11-03 03:54:47,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:54:47,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:47,893 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, 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 03:54:47,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:48,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:54:48,119 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:48,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:48,119 INFO L85 PathProgramCache]: Analyzing trace with hash 528865685, now seen corresponding path program 1 times [2022-11-03 03:54:48,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:54:48,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477034967] [2022-11-03 03:54:48,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:48,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:54:48,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:54:48,123 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:54:48,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-03 03:54:49,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:49,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-03 03:54:49,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:56,895 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:54:56,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:54:56,896 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:54:56,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477034967] [2022-11-03 03:54:56,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477034967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:56,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:56,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-03 03:54:56,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805186808] [2022-11-03 03:54:56,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:56,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 03:54:56,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:54:56,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 03:54:56,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-11-03 03:54:56,899 INFO L87 Difference]: Start difference. First operand 957 states and 1297 transitions. Second operand has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:54:56,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:56,943 INFO L93 Difference]: Finished difference Result 1362 states and 1858 transitions. [2022-11-03 03:54:56,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 03:54:56,944 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 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 364 [2022-11-03 03:54:56,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:56,946 INFO L225 Difference]: With dead ends: 1362 [2022-11-03 03:54:56,946 INFO L226 Difference]: Without dead ends: 1005 [2022-11-03 03:54:56,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-11-03 03:54:56,948 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 177 mSDsluCounter, 5571 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 5874 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:56,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 5874 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 213 Unchecked, 0.0s Time] [2022-11-03 03:54:56,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2022-11-03 03:54:56,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 1001. [2022-11-03 03:54:56,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 1000 states have (on average 1.357) internal successors, (1357), 1000 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states 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 03:54:56,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1357 transitions. [2022-11-03 03:54:56,973 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1357 transitions. Word has length 364 [2022-11-03 03:54:56,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:56,974 INFO L495 AbstractCegarLoop]: Abstraction has 1001 states and 1357 transitions. [2022-11-03 03:54:56,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:54:56,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1357 transitions. [2022-11-03 03:54:56,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:54:56,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:56,979 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, 2, 2, 2, 2, 2, 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 03:54:57,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:57,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:54:57,199 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:57,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:57,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1551717993, now seen corresponding path program 1 times [2022-11-03 03:54:57,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:54:57,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379377617] [2022-11-03 03:54:57,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:57,202 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:54:57,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:54:57,203 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:54:57,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-03 03:54:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:54:58,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:54:58,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:54:58,723 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:54:58,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:54:58,724 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:54:58,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379377617] [2022-11-03 03:54:58,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379377617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:54:58,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:54:58,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:54:58,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291823222] [2022-11-03 03:54:58,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:54:58,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:54:58,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:54:58,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:54:58,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:54:58,726 INFO L87 Difference]: Start difference. First operand 1001 states and 1357 transitions. Second operand has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:54:58,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:54:58,983 INFO L93 Difference]: Finished difference Result 1782 states and 2447 transitions. [2022-11-03 03:54:58,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:54:58,984 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 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 364 [2022-11-03 03:54:58,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:54:58,987 INFO L225 Difference]: With dead ends: 1782 [2022-11-03 03:54:58,987 INFO L226 Difference]: Without dead ends: 1425 [2022-11-03 03:54:58,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 358 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 03:54:58,989 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 595 mSDsluCounter, 2273 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:54:58,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [595 Valid, 2854 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 35 Unchecked, 0.2s Time] [2022-11-03 03:54:58,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2022-11-03 03:54:59,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1019. [2022-11-03 03:54:59,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 1018 states have (on average 1.3575638506876229) internal successors, (1382), 1018 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states 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 03:54:59,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1382 transitions. [2022-11-03 03:54:59,017 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1382 transitions. Word has length 364 [2022-11-03 03:54:59,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:54:59,017 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1382 transitions. [2022-11-03 03:54:59,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:54:59,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1382 transitions. [2022-11-03 03:54:59,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:54:59,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:54:59,022 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, 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 03:54:59,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-03 03:54:59,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:54:59,243 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:54:59,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:54:59,243 INFO L85 PathProgramCache]: Analyzing trace with hash -648797415, now seen corresponding path program 1 times [2022-11-03 03:54:59,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:54:59,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027158285] [2022-11-03 03:54:59,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:54:59,246 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:54:59,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:54:59,247 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:54:59,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-03 03:55:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:00,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:55:00,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:00,557 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:00,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:00,558 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:00,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027158285] [2022-11-03 03:55:00,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027158285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:00,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:00,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:55:00,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676706805] [2022-11-03 03:55:00,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:00,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:55:00,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:00,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:55:00,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:55:00,560 INFO L87 Difference]: Start difference. First operand 1019 states and 1382 transitions. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:00,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:00,762 INFO L93 Difference]: Finished difference Result 1405 states and 1919 transitions. [2022-11-03 03:55:00,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:55:00,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 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 364 [2022-11-03 03:55:00,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:00,765 INFO L225 Difference]: With dead ends: 1405 [2022-11-03 03:55:00,765 INFO L226 Difference]: Without dead ends: 1048 [2022-11-03 03:55:00,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 361 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 03:55:00,767 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 493 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:00,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [493 Valid, 782 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:55:00,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2022-11-03 03:55:00,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1019. [2022-11-03 03:55:00,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 1018 states have (on average 1.356581532416503) internal successors, (1381), 1018 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states 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 03:55:00,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1381 transitions. [2022-11-03 03:55:00,793 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1381 transitions. Word has length 364 [2022-11-03 03:55:00,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:00,793 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1381 transitions. [2022-11-03 03:55:00,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:00,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1381 transitions. [2022-11-03 03:55:00,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:55:00,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:00,798 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, 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 03:55:00,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:01,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:55:01,015 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:01,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:01,015 INFO L85 PathProgramCache]: Analyzing trace with hash -656796389, now seen corresponding path program 1 times [2022-11-03 03:55:01,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:55:01,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [404987931] [2022-11-03 03:55:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:01,018 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:55:01,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:55:01,021 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:55:01,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-03 03:55:02,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:02,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 03:55:02,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:02,601 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:02,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:02,602 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:02,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [404987931] [2022-11-03 03:55:02,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [404987931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:02,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:02,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:55:02,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889455556] [2022-11-03 03:55:02,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:02,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:55:02,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:02,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:55:02,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:55:02,604 INFO L87 Difference]: Start difference. First operand 1019 states and 1381 transitions. Second operand has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:02,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:02,917 INFO L93 Difference]: Finished difference Result 1764 states and 2414 transitions. [2022-11-03 03:55:02,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:55:02,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 0 states have call successors, (0), 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 364 [2022-11-03 03:55:02,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:02,920 INFO L225 Difference]: With dead ends: 1764 [2022-11-03 03:55:02,920 INFO L226 Difference]: Without dead ends: 1407 [2022-11-03 03:55:02,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 360 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 03:55:02,922 INFO L413 NwaCegarLoop]: 573 mSDtfsCounter, 815 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:02,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 1527 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:55:02,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2022-11-03 03:55:02,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1051. [2022-11-03 03:55:02,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1050 states have (on average 1.3571428571428572) internal successors, (1425), 1050 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states 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 03:55:02,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1425 transitions. [2022-11-03 03:55:02,946 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1425 transitions. Word has length 364 [2022-11-03 03:55:02,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:02,947 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 1425 transitions. [2022-11-03 03:55:02,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:02,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1425 transitions. [2022-11-03 03:55:02,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:55:02,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:02,950 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, 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 03:55:02,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-11-03 03:55:03,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:55:03,167 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:03,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:03,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1814328679, now seen corresponding path program 1 times [2022-11-03 03:55:03,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:55:03,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89386747] [2022-11-03 03:55:03,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:03,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:55:03,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:55:03,172 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:55:03,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-03 03:55:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:04,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:55:04,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:04,730 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:04,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:04,731 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:04,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89386747] [2022-11-03 03:55:04,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89386747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:04,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:04,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:55:04,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834457263] [2022-11-03 03:55:04,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:04,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:55:04,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:04,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:55:04,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:55:04,734 INFO L87 Difference]: Start difference. First operand 1051 states and 1425 transitions. Second operand has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:04,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:04,993 INFO L93 Difference]: Finished difference Result 1814 states and 2485 transitions. [2022-11-03 03:55:04,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:55:04,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 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 364 [2022-11-03 03:55:04,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:04,995 INFO L225 Difference]: With dead ends: 1814 [2022-11-03 03:55:04,995 INFO L226 Difference]: Without dead ends: 1457 [2022-11-03 03:55:04,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 358 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 03:55:04,997 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 576 mSDsluCounter, 2551 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 3144 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:04,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 3144 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 52 Unchecked, 0.2s Time] [2022-11-03 03:55:04,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2022-11-03 03:55:05,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1061. [2022-11-03 03:55:05,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 1.3556603773584905) internal successors, (1437), 1060 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states 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 03:55:05,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1437 transitions. [2022-11-03 03:55:05,015 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1437 transitions. Word has length 364 [2022-11-03 03:55:05,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:05,016 INFO L495 AbstractCegarLoop]: Abstraction has 1061 states and 1437 transitions. [2022-11-03 03:55:05,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:05,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1437 transitions. [2022-11-03 03:55:05,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:55:05,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:05,019 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, 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 03:55:05,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2022-11-03 03:55:05,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:55:05,235 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:05,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:05,235 INFO L85 PathProgramCache]: Analyzing trace with hash -215179621, now seen corresponding path program 1 times [2022-11-03 03:55:05,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:55:05,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145648233] [2022-11-03 03:55:05,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:05,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:55:05,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:55:05,238 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:55:05,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-03 03:55:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:06,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:55:06,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:06,549 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:06,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:06,549 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:06,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145648233] [2022-11-03 03:55:06,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145648233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:06,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:06,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:55:06,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594477313] [2022-11-03 03:55:06,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:06,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:55:06,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:06,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:55:06,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:55:06,551 INFO L87 Difference]: Start difference. First operand 1061 states and 1437 transitions. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:06,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:06,764 INFO L93 Difference]: Finished difference Result 1425 states and 1942 transitions. [2022-11-03 03:55:06,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:55:06,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 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 364 [2022-11-03 03:55:06,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:06,767 INFO L225 Difference]: With dead ends: 1425 [2022-11-03 03:55:06,767 INFO L226 Difference]: Without dead ends: 1068 [2022-11-03 03:55:06,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 361 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 03:55:06,768 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 481 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:06,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 803 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:55:06,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-11-03 03:55:06,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 1061. [2022-11-03 03:55:06,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 1060 states have (on average 1.3547169811320754) internal successors, (1436), 1060 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states 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 03:55:06,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1436 transitions. [2022-11-03 03:55:06,809 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1436 transitions. Word has length 364 [2022-11-03 03:55:06,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:06,810 INFO L495 AbstractCegarLoop]: Abstraction has 1061 states and 1436 transitions. [2022-11-03 03:55:06,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:06,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1436 transitions. [2022-11-03 03:55:06,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:55:06,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:06,813 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, 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 03:55:06,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:07,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:55:07,023 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:07,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:07,023 INFO L85 PathProgramCache]: Analyzing trace with hash -195638499, now seen corresponding path program 1 times [2022-11-03 03:55:07,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:55:07,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436952072] [2022-11-03 03:55:07,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:07,030 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:55:07,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:55:07,031 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:55:07,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-03 03:55:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:08,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:55:08,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:08,813 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:08,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:08,813 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:08,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436952072] [2022-11-03 03:55:08,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436952072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:08,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:08,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:55:08,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985102793] [2022-11-03 03:55:08,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:08,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:55:08,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:08,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:55:08,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:55:08,816 INFO L87 Difference]: Start difference. First operand 1061 states and 1436 transitions. Second operand has 6 states, 6 states have (on average 60.666666666666664) internal successors, (364), 6 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:09,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:09,234 INFO L93 Difference]: Finished difference Result 1788 states and 2441 transitions. [2022-11-03 03:55:09,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:55:09,234 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 60.666666666666664) internal successors, (364), 6 states have internal predecessors, (364), 0 states have call successors, (0), 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 364 [2022-11-03 03:55:09,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:09,237 INFO L225 Difference]: With dead ends: 1788 [2022-11-03 03:55:09,237 INFO L226 Difference]: Without dead ends: 1431 [2022-11-03 03:55:09,238 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 359 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 03:55:09,239 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 1192 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:09,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 1983 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:55:09,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2022-11-03 03:55:09,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1063. [2022-11-03 03:55:09,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1063 states, 1062 states have (on average 1.3540489642184557) internal successors, (1438), 1062 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states 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 03:55:09,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1438 transitions. [2022-11-03 03:55:09,259 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1438 transitions. Word has length 364 [2022-11-03 03:55:09,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:09,259 INFO L495 AbstractCegarLoop]: Abstraction has 1063 states and 1438 transitions. [2022-11-03 03:55:09,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 60.666666666666664) internal successors, (364), 6 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:09,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1438 transitions. [2022-11-03 03:55:09,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:55:09,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:09,261 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, 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 03:55:09,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Ended with exit code 0 [2022-11-03 03:55:09,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:55:09,462 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:09,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:09,462 INFO L85 PathProgramCache]: Analyzing trace with hash -105578209, now seen corresponding path program 1 times [2022-11-03 03:55:09,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:55:09,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307752701] [2022-11-03 03:55:09,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:09,464 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:55:09,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:55:09,465 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:55:09,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-03 03:55:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:10,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 74 conjunts are in the unsatisfiable core [2022-11-03 03:55:10,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:18,133 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:18,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:18,134 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:18,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307752701] [2022-11-03 03:55:18,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307752701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:18,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:18,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-03 03:55:18,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004788224] [2022-11-03 03:55:18,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:18,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 03:55:18,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:18,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 03:55:18,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-11-03 03:55:18,136 INFO L87 Difference]: Start difference. First operand 1063 states and 1438 transitions. Second operand has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:18,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:18,911 INFO L93 Difference]: Finished difference Result 2490 states and 3375 transitions. [2022-11-03 03:55:18,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 03:55:18,912 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 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 364 [2022-11-03 03:55:18,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:18,914 INFO L225 Difference]: With dead ends: 2490 [2022-11-03 03:55:18,915 INFO L226 Difference]: Without dead ends: 2131 [2022-11-03 03:55:18,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2022-11-03 03:55:18,916 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 2133 mSDsluCounter, 7500 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2133 SdHoareTripleChecker+Valid, 7932 SdHoareTripleChecker+Invalid, 900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 735 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:18,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2133 Valid, 7932 Invalid, 900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 735 Unchecked, 0.4s Time] [2022-11-03 03:55:18,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2131 states. [2022-11-03 03:55:18,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2131 to 1111. [2022-11-03 03:55:18,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 1110 states have (on average 1.3522522522522522) internal successors, (1501), 1110 states have internal predecessors, (1501), 0 states have call successors, (0), 0 states 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 03:55:18,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1501 transitions. [2022-11-03 03:55:18,948 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1501 transitions. Word has length 364 [2022-11-03 03:55:18,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:18,949 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 1501 transitions. [2022-11-03 03:55:18,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:18,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1501 transitions. [2022-11-03 03:55:18,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:55:18,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:18,952 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, 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 03:55:18,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-11-03 03:55:19,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:55:19,179 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:19,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:19,179 INFO L85 PathProgramCache]: Analyzing trace with hash 392978593, now seen corresponding path program 1 times [2022-11-03 03:55:19,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:55:19,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89481703] [2022-11-03 03:55:19,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:19,182 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:55:19,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:55:19,192 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:55:19,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-03 03:55:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:20,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 03:55:20,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:21,071 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:21,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:21,072 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:21,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89481703] [2022-11-03 03:55:21,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89481703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:21,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:21,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 03:55:21,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41608959] [2022-11-03 03:55:21,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:21,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:55:21,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:21,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:55:21,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:55:21,074 INFO L87 Difference]: Start difference. First operand 1111 states and 1501 transitions. Second operand has 8 states, 8 states have (on average 45.5) internal successors, (364), 8 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:21,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:21,820 INFO L93 Difference]: Finished difference Result 2213 states and 3022 transitions. [2022-11-03 03:55:21,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 03:55:21,821 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 45.5) internal successors, (364), 8 states have internal predecessors, (364), 0 states have call successors, (0), 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 364 [2022-11-03 03:55:21,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:21,823 INFO L225 Difference]: With dead ends: 2213 [2022-11-03 03:55:21,823 INFO L226 Difference]: Without dead ends: 1854 [2022-11-03 03:55:21,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:55:21,824 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 2176 mSDsluCounter, 3183 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2176 SdHoareTripleChecker+Valid, 3766 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:21,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2176 Valid, 3766 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 03:55:21,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1854 states. [2022-11-03 03:55:21,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1854 to 1125. [2022-11-03 03:55:21,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 1124 states have (on average 1.3523131672597866) internal successors, (1520), 1124 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states 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 03:55:21,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1520 transitions. [2022-11-03 03:55:21,844 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1520 transitions. Word has length 364 [2022-11-03 03:55:21,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:21,844 INFO L495 AbstractCegarLoop]: Abstraction has 1125 states and 1520 transitions. [2022-11-03 03:55:21,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 45.5) internal successors, (364), 8 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:21,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1520 transitions. [2022-11-03 03:55:21,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:55:21,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:21,846 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, 2, 2, 2, 2, 2, 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 03:55:21,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:22,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:55:22,047 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:22,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:22,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1796847779, now seen corresponding path program 1 times [2022-11-03 03:55:22,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:55:22,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324685508] [2022-11-03 03:55:22,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:22,050 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:55:22,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:55:22,051 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:55:22,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-03 03:55:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:23,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:55:23,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:23,554 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:23,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:23,554 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:23,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324685508] [2022-11-03 03:55:23,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324685508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:23,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:23,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:55:23,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818218631] [2022-11-03 03:55:23,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:23,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:55:23,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:23,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:55:23,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:55:23,557 INFO L87 Difference]: Start difference. First operand 1125 states and 1520 transitions. Second operand has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:23,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:23,787 INFO L93 Difference]: Finished difference Result 1930 states and 2632 transitions. [2022-11-03 03:55:23,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:55:23,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 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 364 [2022-11-03 03:55:23,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:23,789 INFO L225 Difference]: With dead ends: 1930 [2022-11-03 03:55:23,790 INFO L226 Difference]: Without dead ends: 1563 [2022-11-03 03:55:23,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 358 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 03:55:23,791 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 593 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:23,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 2486 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 37 Unchecked, 0.2s Time] [2022-11-03 03:55:23,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2022-11-03 03:55:23,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1177. [2022-11-03 03:55:23,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1176 states have (on average 1.3520408163265305) internal successors, (1590), 1176 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states 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 03:55:23,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1590 transitions. [2022-11-03 03:55:23,822 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1590 transitions. Word has length 364 [2022-11-03 03:55:23,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:23,822 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1590 transitions. [2022-11-03 03:55:23,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:23,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1590 transitions. [2022-11-03 03:55:23,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:55:23,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:23,826 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, 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 03:55:23,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:24,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:55:24,043 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:24,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:24,043 INFO L85 PathProgramCache]: Analyzing trace with hash 2141675941, now seen corresponding path program 1 times [2022-11-03 03:55:24,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:55:24,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634464546] [2022-11-03 03:55:24,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:24,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:55:24,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:55:24,047 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:55:24,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-03 03:55:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:25,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:55:25,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:25,426 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:25,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:25,426 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:25,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634464546] [2022-11-03 03:55:25,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634464546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:25,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:25,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:55:25,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664782398] [2022-11-03 03:55:25,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:25,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:55:25,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:25,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:55:25,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:55:25,429 INFO L87 Difference]: Start difference. First operand 1177 states and 1590 transitions. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:25,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:25,641 INFO L93 Difference]: Finished difference Result 1581 states and 2149 transitions. [2022-11-03 03:55:25,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:55:25,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 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 364 [2022-11-03 03:55:25,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:25,643 INFO L225 Difference]: With dead ends: 1581 [2022-11-03 03:55:25,643 INFO L226 Difference]: Without dead ends: 1214 [2022-11-03 03:55:25,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 361 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 03:55:25,645 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 459 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:25,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 858 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:55:25,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2022-11-03 03:55:25,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1177. [2022-11-03 03:55:25,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 1176 states have (on average 1.3511904761904763) internal successors, (1589), 1176 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states 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 03:55:25,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1589 transitions. [2022-11-03 03:55:25,669 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1589 transitions. Word has length 364 [2022-11-03 03:55:25,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:25,669 INFO L495 AbstractCegarLoop]: Abstraction has 1177 states and 1589 transitions. [2022-11-03 03:55:25,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:25,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1589 transitions. [2022-11-03 03:55:25,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:55:25,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:25,672 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, 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 03:55:25,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:25,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:55:25,891 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:25,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:25,891 INFO L85 PathProgramCache]: Analyzing trace with hash 372204327, now seen corresponding path program 1 times [2022-11-03 03:55:25,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:55:25,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345081791] [2022-11-03 03:55:25,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:25,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:55:25,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:55:25,896 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:55:25,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-03 03:55:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:26,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-03 03:55:26,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:35,012 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:35,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:35,012 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:35,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345081791] [2022-11-03 03:55:35,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345081791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:35,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:35,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-03 03:55:35,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781316551] [2022-11-03 03:55:35,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:35,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 03:55:35,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:35,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 03:55:35,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-11-03 03:55:35,015 INFO L87 Difference]: Start difference. First operand 1177 states and 1589 transitions. Second operand has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:35,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:35,055 INFO L93 Difference]: Finished difference Result 1572 states and 2131 transitions. [2022-11-03 03:55:35,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-03 03:55:35,057 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 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 364 [2022-11-03 03:55:35,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:35,059 INFO L225 Difference]: With dead ends: 1572 [2022-11-03 03:55:35,059 INFO L226 Difference]: Without dead ends: 1205 [2022-11-03 03:55:35,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-11-03 03:55:35,060 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 206 mSDsluCounter, 5236 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 5535 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 192 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:35,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 5535 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 192 Unchecked, 0.0s Time] [2022-11-03 03:55:35,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1205 states. [2022-11-03 03:55:35,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1205 to 1201. [2022-11-03 03:55:35,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 1200 states have (on average 1.35) internal successors, (1620), 1200 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states 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 03:55:35,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1620 transitions. [2022-11-03 03:55:35,087 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1620 transitions. Word has length 364 [2022-11-03 03:55:35,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:35,088 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1620 transitions. [2022-11-03 03:55:35,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 16.545454545454547) internal successors, (364), 22 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:35,088 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1620 transitions. [2022-11-03 03:55:35,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:55:35,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:35,091 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, 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 03:55:35,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:35,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:55:35,306 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:35,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:35,307 INFO L85 PathProgramCache]: Analyzing trace with hash 758066729, now seen corresponding path program 1 times [2022-11-03 03:55:35,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:55:35,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542972473] [2022-11-03 03:55:35,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:35,309 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:55:35,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:55:35,310 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:55:35,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-03 03:55:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:36,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 03:55:36,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:36,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:36,878 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:36,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542972473] [2022-11-03 03:55:36,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542972473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:36,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:36,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 03:55:36,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880062318] [2022-11-03 03:55:36,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:36,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 03:55:36,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:36,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 03:55:36,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:55:36,880 INFO L87 Difference]: Start difference. First operand 1201 states and 1620 transitions. Second operand has 8 states, 8 states have (on average 45.5) internal successors, (364), 8 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:37,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:37,636 INFO L93 Difference]: Finished difference Result 2331 states and 3174 transitions. [2022-11-03 03:55:37,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 03:55:37,637 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 45.5) internal successors, (364), 8 states have internal predecessors, (364), 0 states have call successors, (0), 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 364 [2022-11-03 03:55:37,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:37,639 INFO L225 Difference]: With dead ends: 2331 [2022-11-03 03:55:37,639 INFO L226 Difference]: Without dead ends: 1964 [2022-11-03 03:55:37,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2022-11-03 03:55:37,640 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 2149 mSDsluCounter, 3193 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2149 SdHoareTripleChecker+Valid, 3793 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:37,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2149 Valid, 3793 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 03:55:37,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1964 states. [2022-11-03 03:55:37,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1964 to 1235. [2022-11-03 03:55:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1235 states, 1234 states have (on average 1.3492706645056727) internal successors, (1665), 1234 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states 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 03:55:37,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1235 states to 1235 states and 1665 transitions. [2022-11-03 03:55:37,660 INFO L78 Accepts]: Start accepts. Automaton has 1235 states and 1665 transitions. Word has length 364 [2022-11-03 03:55:37,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:37,660 INFO L495 AbstractCegarLoop]: Abstraction has 1235 states and 1665 transitions. [2022-11-03 03:55:37,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 45.5) internal successors, (364), 8 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:37,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1235 states and 1665 transitions. [2022-11-03 03:55:37,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:55:37,663 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:37,663 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, 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 03:55:37,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2022-11-03 03:55:37,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:55:37,864 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:37,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:37,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1605774933, now seen corresponding path program 1 times [2022-11-03 03:55:37,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:55:37,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563825769] [2022-11-03 03:55:37,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:37,868 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:55:37,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:55:37,869 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:55:37,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-03 03:55:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:38,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:55:38,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:39,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:39,313 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:39,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563825769] [2022-11-03 03:55:39,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563825769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:39,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:39,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 03:55:39,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482199397] [2022-11-03 03:55:39,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:39,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 03:55:39,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:39,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 03:55:39,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 03:55:39,315 INFO L87 Difference]: Start difference. First operand 1235 states and 1665 transitions. Second operand has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:39,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:39,554 INFO L93 Difference]: Finished difference Result 2042 states and 2774 transitions. [2022-11-03 03:55:39,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 03:55:39,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 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 364 [2022-11-03 03:55:39,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:39,556 INFO L225 Difference]: With dead ends: 2042 [2022-11-03 03:55:39,556 INFO L226 Difference]: Without dead ends: 1661 [2022-11-03 03:55:39,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 358 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 03:55:39,558 INFO L413 NwaCegarLoop]: 640 mSDtfsCounter, 553 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 2515 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:39,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 2515 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 36 Unchecked, 0.2s Time] [2022-11-03 03:55:39,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2022-11-03 03:55:39,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1275. [2022-11-03 03:55:39,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1274 states have (on average 1.347723704866562) internal successors, (1717), 1274 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states 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 03:55:39,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1717 transitions. [2022-11-03 03:55:39,591 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1717 transitions. Word has length 364 [2022-11-03 03:55:39,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:39,591 INFO L495 AbstractCegarLoop]: Abstraction has 1275 states and 1717 transitions. [2022-11-03 03:55:39,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.0) internal successors, (364), 7 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:39,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1717 transitions. [2022-11-03 03:55:39,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:55:39,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:39,596 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, 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 03:55:39,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:39,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:55:39,819 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:39,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:39,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1179220435, now seen corresponding path program 1 times [2022-11-03 03:55:39,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:55:39,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142129395] [2022-11-03 03:55:39,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:39,823 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:55:39,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:55:39,824 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:55:39,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-03 03:55:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:40,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:55:40,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:41,091 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:41,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:41,092 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:41,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142129395] [2022-11-03 03:55:41,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142129395] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:41,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:55:41,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:55:41,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255018531] [2022-11-03 03:55:41,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:41,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:55:41,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:41,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:55:41,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:55:41,094 INFO L87 Difference]: Start difference. First operand 1275 states and 1717 transitions. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:41,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:41,304 INFO L93 Difference]: Finished difference Result 1721 states and 2333 transitions. [2022-11-03 03:55:41,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:55:41,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 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 364 [2022-11-03 03:55:41,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:41,306 INFO L225 Difference]: With dead ends: 1721 [2022-11-03 03:55:41,306 INFO L226 Difference]: Without dead ends: 1340 [2022-11-03 03:55:41,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 361 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 03:55:41,307 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 443 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:41,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 895 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:55:41,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1340 states. [2022-11-03 03:55:41,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1340 to 1275. [2022-11-03 03:55:41,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 1274 states have (on average 1.346938775510204) internal successors, (1716), 1274 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states 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 03:55:41,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1716 transitions. [2022-11-03 03:55:41,326 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1716 transitions. Word has length 364 [2022-11-03 03:55:41,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:41,326 INFO L495 AbstractCegarLoop]: Abstraction has 1275 states and 1716 transitions. [2022-11-03 03:55:41,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 03:55:41,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1716 transitions. [2022-11-03 03:55:41,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:55:41,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:41,330 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, 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 03:55:41,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:41,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:55:41,533 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:41,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:41,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1335200977, now seen corresponding path program 1 times [2022-11-03 03:55:41,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:55:41,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926540493] [2022-11-03 03:55:41,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:41,535 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:55:41,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:55:41,536 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:55:41,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-03 03:55:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:42,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:55:42,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:43,232 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:43,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:55:43,731 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:43,732 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:43,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926540493] [2022-11-03 03:55:43,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926540493] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:55:43,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [507728251] [2022-11-03 03:55:43,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:43,732 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:55:43,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:55:43,734 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:55:43,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (61)] Waiting until timeout for monitored process [2022-11-03 03:55:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:45,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:55:45,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:45,516 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:55:45,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:45,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [507728251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:45,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:55:45,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 14 [2022-11-03 03:55:45,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640160583] [2022-11-03 03:55:45,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:45,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:55:45,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:45,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:55:45,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-03 03:55:45,519 INFO L87 Difference]: Start difference. First operand 1275 states and 1716 transitions. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states 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 03:55:45,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:45,700 INFO L93 Difference]: Finished difference Result 2934 states and 3984 transitions. [2022-11-03 03:55:45,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:55:45,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 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 364 [2022-11-03 03:55:45,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:45,703 INFO L225 Difference]: With dead ends: 2934 [2022-11-03 03:55:45,703 INFO L226 Difference]: Without dead ends: 2553 [2022-11-03 03:55:45,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1095 GetRequests, 1080 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-11-03 03:55:45,704 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 994 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:45,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 2107 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:55:45,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2022-11-03 03:55:45,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 1479. [2022-11-03 03:55:45,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1478 states have (on average 1.3497970230040595) internal successors, (1995), 1478 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states 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 03:55:45,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 1995 transitions. [2022-11-03 03:55:45,732 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 1995 transitions. Word has length 364 [2022-11-03 03:55:45,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:45,733 INFO L495 AbstractCegarLoop]: Abstraction has 1479 states and 1995 transitions. [2022-11-03 03:55:45,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states 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 03:55:45,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 1995 transitions. [2022-11-03 03:55:45,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:55:45,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:45,737 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, 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 03:55:45,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:45,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (61)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:46,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:55:46,159 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:46,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:46,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1593366415, now seen corresponding path program 1 times [2022-11-03 03:55:46,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:55:46,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723664305] [2022-11-03 03:55:46,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:46,161 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:55:46,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:55:46,162 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:55:46,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-03 03:55:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:47,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:55:47,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:47,862 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:47,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:55:48,432 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:48,433 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:48,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723664305] [2022-11-03 03:55:48,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723664305] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:55:48,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2144773798] [2022-11-03 03:55:48,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:48,434 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:55:48,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:55:48,435 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:55:48,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2022-11-03 03:55:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:50,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:55:50,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:51,423 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:51,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:55:51,829 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:51,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2144773798] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:55:51,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237935197] [2022-11-03 03:55:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:51,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:55:51,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:55:51,831 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:55:51,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-11-03 03:55:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:52,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:55:52,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:53,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:55:53,676 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 116 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:53,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237935197] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:55:53,676 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:55:53,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 11 [2022-11-03 03:55:53,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703159900] [2022-11-03 03:55:53,677 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:55:53,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 03:55:53,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:53,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 03:55:53,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-03 03:55:53,679 INFO L87 Difference]: Start difference. First operand 1479 states and 1995 transitions. Second operand has 11 states, 11 states have (on average 47.45454545454545) internal successors, (522), 11 states have internal predecessors, (522), 0 states have call successors, (0), 0 states 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 03:55:54,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:54,633 INFO L93 Difference]: Finished difference Result 3217 states and 4377 transitions. [2022-11-03 03:55:54,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 03:55:54,633 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 47.45454545454545) internal successors, (522), 11 states have internal predecessors, (522), 0 states have call successors, (0), 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 364 [2022-11-03 03:55:54,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:54,635 INFO L225 Difference]: With dead ends: 3217 [2022-11-03 03:55:54,636 INFO L226 Difference]: Without dead ends: 2632 [2022-11-03 03:55:54,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2191 GetRequests, 2169 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2022-11-03 03:55:54,637 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 3608 mSDsluCounter, 2417 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3608 SdHoareTripleChecker+Valid, 2904 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:54,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3608 Valid, 2904 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 03:55:54,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2632 states. [2022-11-03 03:55:54,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2632 to 1890. [2022-11-03 03:55:54,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1889 states have (on average 1.3488618316569614) internal successors, (2548), 1889 states have internal predecessors, (2548), 0 states have call successors, (0), 0 states 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 03:55:54,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 2548 transitions. [2022-11-03 03:55:54,672 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 2548 transitions. Word has length 364 [2022-11-03 03:55:54,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:54,672 INFO L495 AbstractCegarLoop]: Abstraction has 1890 states and 2548 transitions. [2022-11-03 03:55:54,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 47.45454545454545) internal successors, (522), 11 states have internal predecessors, (522), 0 states have call successors, (0), 0 states 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 03:55:54,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 2548 transitions. [2022-11-03 03:55:54,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:55:54,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:54,675 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, 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 03:55:54,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-11-03 03:55:54,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Ended with exit code 0 [2022-11-03 03:55:55,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Ended with exit code 0 [2022-11-03 03:55:55,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:55:55,276 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:55:55,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:55:55,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1117290605, now seen corresponding path program 1 times [2022-11-03 03:55:55,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:55:55,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269882724] [2022-11-03 03:55:55,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:55,279 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:55:55,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:55:55,280 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:55:55,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-03 03:55:56,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:56,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:55:56,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:57,091 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 114 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:57,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:55:57,624 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 114 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:55:57,624 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:55:57,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269882724] [2022-11-03 03:55:57,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269882724] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:55:57,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [939733659] [2022-11-03 03:55:57,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:55:57,626 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:55:57,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:55:57,628 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:55:57,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (66)] Waiting until timeout for monitored process [2022-11-03 03:55:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:55:59,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:55:59,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:55:59,388 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:55:59,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:55:59,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [939733659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:55:59,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:55:59,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 12 [2022-11-03 03:55:59,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100578782] [2022-11-03 03:55:59,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:55:59,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:55:59,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:55:59,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:55:59,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:55:59,391 INFO L87 Difference]: Start difference. First operand 1890 states and 2548 transitions. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states 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 03:55:59,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:55:59,583 INFO L93 Difference]: Finished difference Result 3358 states and 4566 transitions. [2022-11-03 03:55:59,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:55:59,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 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 364 [2022-11-03 03:55:59,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:55:59,585 INFO L225 Difference]: With dead ends: 3358 [2022-11-03 03:55:59,585 INFO L226 Difference]: Without dead ends: 2634 [2022-11-03 03:55:59,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1094 GetRequests, 1081 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:55:59,587 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 1561 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:55:59,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1561 Valid, 1346 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:55:59,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2022-11-03 03:55:59,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1890. [2022-11-03 03:55:59,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1889 states have (on average 1.3483324510322923) internal successors, (2547), 1889 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states 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 03:55:59,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 2547 transitions. [2022-11-03 03:55:59,638 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 2547 transitions. Word has length 364 [2022-11-03 03:55:59,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:55:59,639 INFO L495 AbstractCegarLoop]: Abstraction has 1890 states and 2547 transitions. [2022-11-03 03:55:59,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states 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 03:55:59,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 2547 transitions. [2022-11-03 03:55:59,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:55:59,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:55:59,644 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, 2, 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 03:55:59,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2022-11-03 03:55:59,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (66)] Ended with exit code 0 [2022-11-03 03:56:00,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:56:00,059 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:00,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:00,059 INFO L85 PathProgramCache]: Analyzing trace with hash 784647467, now seen corresponding path program 1 times [2022-11-03 03:56:00,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:56:00,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819347991] [2022-11-03 03:56:00,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:00,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:56:00,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:56:00,062 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:56:00,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-03 03:56:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:01,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:56:01,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:01,889 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 40 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:01,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:56:02,478 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 40 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:02,478 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:56:02,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819347991] [2022-11-03 03:56:02,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819347991] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:56:02,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1617643184] [2022-11-03 03:56:02,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:02,479 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:56:02,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:56:02,483 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:56:02,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (68)] Waiting until timeout for monitored process [2022-11-03 03:56:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:04,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:56:04,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:04,280 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:56:04,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:56:04,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1617643184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:04,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:56:04,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 12 [2022-11-03 03:56:04,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879264644] [2022-11-03 03:56:04,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:04,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:56:04,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:56:04,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:56:04,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:56:04,282 INFO L87 Difference]: Start difference. First operand 1890 states and 2547 transitions. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states 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 03:56:04,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:04,457 INFO L93 Difference]: Finished difference Result 3502 states and 4754 transitions. [2022-11-03 03:56:04,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:56:04,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 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 364 [2022-11-03 03:56:04,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:04,460 INFO L225 Difference]: With dead ends: 3502 [2022-11-03 03:56:04,460 INFO L226 Difference]: Without dead ends: 2778 [2022-11-03 03:56:04,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1095 GetRequests, 1082 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:56:04,461 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 1595 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:04,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 1345 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:56:04,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2022-11-03 03:56:04,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 1890. [2022-11-03 03:56:04,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1889 states have (on average 1.347273689782954) internal successors, (2545), 1889 states have internal predecessors, (2545), 0 states have call successors, (0), 0 states 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 03:56:04,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 2545 transitions. [2022-11-03 03:56:04,494 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 2545 transitions. Word has length 364 [2022-11-03 03:56:04,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:04,494 INFO L495 AbstractCegarLoop]: Abstraction has 1890 states and 2545 transitions. [2022-11-03 03:56:04,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states 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 03:56:04,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 2545 transitions. [2022-11-03 03:56:04,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:56:04,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:04,498 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, 2, 2, 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 03:56:04,506 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (68)] Ended with exit code 0 [2022-11-03 03:56:04,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2022-11-03 03:56:04,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:56:04,899 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:04,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:04,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1032793961, now seen corresponding path program 1 times [2022-11-03 03:56:04,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:56:04,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547754214] [2022-11-03 03:56:04,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:04,902 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:56:04,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:56:04,903 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:56:04,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-03 03:56:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:05,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:56:05,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:06,649 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 32 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:06,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:56:07,256 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 32 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 03:56:07,256 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:56:07,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547754214] [2022-11-03 03:56:07,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547754214] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:56:07,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [538550361] [2022-11-03 03:56:07,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:07,257 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:56:07,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:56:07,258 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:56:07,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (70)] Waiting until timeout for monitored process [2022-11-03 03:56:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:08,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:56:08,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:08,971 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:56:08,971 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:56:08,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [538550361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:56:08,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 03:56:08,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 12 [2022-11-03 03:56:08,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132822437] [2022-11-03 03:56:08,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:56:08,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:56:08,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:56:08,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:56:08,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:56:08,972 INFO L87 Difference]: Start difference. First operand 1890 states and 2545 transitions. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states 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 03:56:09,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:56:09,135 INFO L93 Difference]: Finished difference Result 3518 states and 4772 transitions. [2022-11-03 03:56:09,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:56:09,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 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 364 [2022-11-03 03:56:09,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:56:09,158 INFO L225 Difference]: With dead ends: 3518 [2022-11-03 03:56:09,159 INFO L226 Difference]: Without dead ends: 2794 [2022-11-03 03:56:09,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1095 GetRequests, 1082 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-03 03:56:09,160 INFO L413 NwaCegarLoop]: 472 mSDtfsCounter, 1596 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:56:09,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1596 Valid, 1344 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:56:09,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2022-11-03 03:56:09,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 1890. [2022-11-03 03:56:09,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1889 states have (on average 1.3462149285336156) internal successors, (2543), 1889 states have internal predecessors, (2543), 0 states have call successors, (0), 0 states 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 03:56:09,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 2543 transitions. [2022-11-03 03:56:09,188 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 2543 transitions. Word has length 364 [2022-11-03 03:56:09,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:56:09,189 INFO L495 AbstractCegarLoop]: Abstraction has 1890 states and 2543 transitions. [2022-11-03 03:56:09,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states 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 03:56:09,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 2543 transitions. [2022-11-03 03:56:09,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2022-11-03 03:56:09,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:56:09,191 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, 2, 2, 2, 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 03:56:09,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (70)] Ended with exit code 0 [2022-11-03 03:56:09,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Ended with exit code 0 [2022-11-03 03:56:09,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:56:09,592 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:56:09,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:56:09,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1211189337, now seen corresponding path program 1 times [2022-11-03 03:56:09,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:56:09,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760113877] [2022-11-03 03:56:09,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:56:09,595 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:56:09,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:56:09,596 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:56:09,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b19de2a3-c333-4338-bf75-8af5c2bfcede/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-03 03:56:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:56:10,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 136 conjunts are in the unsatisfiable core [2022-11-03 03:56:10,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:56:29,579 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 22 proven. 113 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-03 03:56:29,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:57:06,905 WARN L234 SmtUtils]: Spent 9.27s on a formula simplification. DAG size of input: 359 DAG size of output: 288 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:57:43,708 WARN L234 SmtUtils]: Spent 14.20s on a formula simplification. DAG size of input: 378 DAG size of output: 285 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 04:01:47,288 WARN L234 SmtUtils]: Spent 1.39m on a formula simplification. DAG size of input: 610 DAG size of output: 494 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)